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Zeta Global Holdings Corp
(NYSE:ZETA) 

ZETA stock logo

Zeta Global Holdings Corp. is a data-driven marketing technology company which was founded in 2007. Zeta offers companies a suite of multichannel marketing tools focused on creating, maintaining, and monetizing customer relationships.

Founded: 2007
IPO Price: $1 (Jun 10, 2021)
Sector:
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At a glance:
  • AI-Powered Marketing Automation with Large-Scale Data Assets: Zeta Global provides a marketing technology platform that uses AI and identity/data capabilities to help brands acquire, engage, and retain customers across channels.
  • Revenue Mix Skews to Subscription/Platform, with Services Supporting Adoption: The business model is typically anchored by recurring platform/software revenue, complemented by related services that can drive implementation and ongoing campaign execution.
  • Growth Focused on Expanding Enterprise Relationships: A key driver is increasing wallet share within existing customers and landing new enterprise accounts, often via upselling additional modules, data products, and channel capabilities.
  • Operating Leverage and Profitability Execution Are Central Watch Items: Investors often monitor whether revenue growth translates into improving margins and cash generation as the company scales, including discipline on sales and marketing and R&D spend.
  • Competitive and Regulatory Environment Adds Ongoing Risk: Zeta competes with large marketing clouds and specialized adtech/martech vendors, while privacy rules, identity changes, and data governance requirements can affect targeting, measurement, and product strategy.
Bull Thesis:
  • Proprietary AI-Powered Platform & First-Party Data Advantage: Zeta Global leverages a vast, proprietary first-party data cloud combined with an AI-driven platform to offer highly personalized and effective marketing solutions. This unique asset provides a competitive edge, especially as the industry shifts away from third-party cookies, enabling superior targeting and customer engagement.
  • Strong Revenue Growth and Expanding Market Opportunity: The company operates in the large and growing customer lifecycle management and digital marketing technology market. Zeta has consistently demonstrated strong revenue growth, indicating increasing market adoption of its platform and successful execution in capturing market share within a critical area for businesses.
  • Improving Profitability and Path to Positive Free Cash Flow: Zeta Global has shown a clear trend of improving adjusted EBITDA margins and is on a trajectory towards sustainable GAAP profitability and positive free cash flow. This indicates increasing operational leverage and a maturing business model that can generate cash for future investments and shareholder returns.
  • High Customer Retention and Expansion: Evidence of strong net retention rates suggests that existing customers find significant value in Zeta's platform, leading to recurring revenue streams and opportunities for upsell and cross-sell. This indicates customer satisfaction and the stickiness of their solutions within client organizations.
Bear Thesis:
  • Intense Competition in a Crowded Market: Zeta Global operates in a highly competitive landscape, facing formidable rivals ranging from large enterprise software providers (e.g., Adobe, Salesforce) to specialized marketing tech players and even ad tech giants (Google, Meta). This intense competition could limit market share gains and put pressure on pricing.
  • Profitability and Free Cash Flow Still Nascent: Despite improvements, Zeta's GAAP profitability and consistent positive free cash flow are still developing. Sustained periods of negative free cash flow could necessitate further capital raises, dilute existing shareholders, or limit the company's ability to invest aggressively in future growth initiatives.
  • Reliance on Acquisitions for Growth & Integration Risks: A portion of Zeta's growth strategy has involved strategic acquisitions (e.g., Appcast). While these can expand capabilities and market reach, they also carry inherent integration risks, including potential cultural clashes, technology integration challenges, and the need to successfully realize anticipated synergies to justify the investment.
  • Macroeconomic Sensitivity of Ad Spending: As a provider of marketing technology, Zeta Global's revenue can be sensitive to broader macroeconomic downturns. During economic contractions, businesses often reduce their marketing and advertising budgets, which could lead to slower growth or even declines in spending from Zeta's client base.
Main Competitors:
  • Adobe ($ADBE) (Adobe Experience Cloud), Adobe Experience Cloud provides a robust set of tools for content management, analytics, commerce, and marketing automation. It challenges Zeta Global in delivering personalized customer experiences and data-driven marketing solutions for large enterprises, leveraging its strong position in creative and content tools.
  • Oracle ($ORCL) (Oracle Marketing Cloud (e.g., Eloqua, Responsys)), Oracle Marketing Cloud offers B2B marketing automation (Eloqua) and B2C cross-channel marketing (Responsys). It competes with Zeta's capabilities in lead management, campaign execution, and customer engagement across different business models, particularly within large enterprise environments.
  • Braze ($BRZE) (Braze Customer Engagement Platform), Braze specializes in real-time customer engagement across mobile, web, and email, often with a strong focus on app-centric businesses. It competes with Zeta's ability to deliver personalized, cross-channel experiences and drive customer retention through dynamic messaging and journey orchestration.
Moat:
Zeta Global operates in a highly competitive marketing technology (martech) landscape. Its primary moat stems from its proprietary data cloud, which comprises over 2.4 billion opted-in consumer profiles, and its AI-driven platform designed to unify customer data, personalize experiences, and automate marketing across channels. This integrated, end-to-end approach aims to simplify the complex martech stacks often used by enterprises. However, Zeta faces formidable competition from large, established enterprise software vendors like Salesforce, Adobe, and Oracle, which offer comprehensive marketing clouds with extensive resources and existing client bases. Additionally, specialized players like Braze and Twilio Segment compete effectively in specific areas such as real-time customer engagement or customer data platforms. Zeta differentiates itself by emphasizing its unique data assets and its ability to deliver a unified, AI-powered solution that can potentially replace multiple disparate tools, offering a compelling value proposition for businesses seeking to optimize their customer lifecycle management.
Income Statements:
Quarterly
Annual
    Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 
                        
      revenues
    396,304,000 394,638,000 337,169,000 308,442,000 264,419,000 314,673,000 268,295,000 227,839,000 194,947,000 210,320,000 188,984,000 171,817,000 157,602,000 175,140,000 152,252,000 137,301,000 126,268,000 134,846,000 115,133,000 106,896,000 
      yoy
    49.88% 25.41% 25.67% 35.38% 35.64% 49.62% 41.97% 32.61% 23.70% 20.09% 24.13% 25.14% 24.82% 29.88% 32.24% 28.44%     
      qoq
    0.42% 17.04% 9.31% 16.65% -15.97% 17.29% 17.76% 16.87% -7.31% 11.29% 9.99% 9.02% -10.01% 15.03% 10.89% 8.74% -6.36% 17.12% 7.71%  
      operating expenses:
                        
      cost of revenues
    162,446,000 159,887,000 133,224,000 116,988,000 103,488,000 125,945,000 105,652,000 91,082,000 76,873,000 84,615,000 73,480,000 62,037,000 54,350,000 65,979,000 57,529,000 50,233,000 41,725,000 49,011,000 44,525,000 42,212,000 
      general and administrative expenses
    73,397,000 60,422,000 56,393,000 62,172,000 54,037,000 54,136,000 50,494,000 51,159,000 48,806,000 51,397,000 50,706,000 50,715,000 52,601,000 51,017,000 53,584,000 55,665,000 53,349,000 53,924,000 50,643,000 65,907,000 
      selling and marketing expenses
    102,403,000 92,964,000 85,315,000 86,392,000 75,369,000 82,947,000 84,548,000 75,604,000 71,415,000 72,727,000 70,669,000 72,496,000 72,549,000 76,194,000 76,987,000 77,139,000 68,918,000 65,391,000 60,537,000 82,845,000 
      research and development expenses
    44,950,000 29,970,000 29,812,000 30,592,000 26,799,000 24,272,000 22,807,000 23,614,000 19,986,000 19,945,000 18,062,000 17,343,000 18,519,000 17,231,000 16,954,000 18,038,000 17,231,000 14,189,000 13,998,000 26,503,000 
      depreciation and amortization
    23,529,000 19,758,000 17,191,000 17,403,000 17,687,000 16,805,000 12,590,000 12,964,000 13,741,000 13,495,000 13,233,000 12,596,000 11,825,000 12,430,000 13,367,000 13,315,000 12,766,000 12,787,000 11,783,000 11,235,000 
      acquisition-related expenses
    1,666,000 13,799,000 6,482,000   3,646,000 4,583,000      203,000        
      restructuring expenses
    6,752,000    3,152,000       2,845,000      260,000 30,000 150,000 
      total operating expenses
    415,143,000 376,800,000 328,417,000 313,547,000 280,532,000 307,751,000 280,674,000 254,423,000 230,821,000 242,179,000 226,150,000 218,032,000 210,047,000 222,851,000 218,421,000 214,390,000 194,333,000 195,999,000 181,996,000 229,181,000 
      income from operations
    -18,839,000 17,838,000 8,752,000 -5,105,000 -16,113,000 6,922,000 -12,379,000 -26,584,000 -35,874,000 -31,859,000 -37,166,000 -46,215,000 -52,445,000 -47,711,000 -66,169,000 -77,089,000 -68,065,000 -61,153,000 -66,863,000 -122,285,000 
      yoy
    16.92% 157.70% -170.70% -80.80% -55.08% -121.73% -66.69% -42.48% -31.60% -33.23% -43.83% -40.05% -22.95% -21.98% -1.04% -36.96%     
      qoq
    -205.61% 103.82% -271.44% -68.32% -332.78% -155.92% -53.43% -25.90% 12.60% -14.28% -19.58% -11.88% 9.92% -27.90% -14.17% 13.26% 11.30% -8.54% -45.32%  
      operating margin %
    -4.75% 4.52% 2.60% -1.66% -6.09% 2.20% -4.61% -11.67% -18.40% -15.15% -19.67% -26.90% -33.28% -27.24% -43.46% -56.15% -53.91% -45.35% -58.07% -114.40% 
      interest expenses
    761,000                    
      other expenses
    -3,776,000 5,397,250 11,726,000  3,512,000 -2,073,000 2,851,000 -1,564,000 671,000 1,784,500 2,436,000 2,838,000 1,864,000 3,027,750 1,142,000  5,273,000    
      total other expenses
    -3,015,000 16,553,000 11,546,000 6,517,000 3,843,000 -2,056,000 4,796,000 996,000 3,296,000 3,482,000 5,330,000 5,635,000 4,312,000 4,173,000 2,375,000  6,571,000 18,000 1,838,000  
      income before income taxes
    -15,824,000 1,285,000 -2,794,000 -11,622,000 -19,956,000 8,978,000 -17,175,000 -27,580,000 -39,170,000 -35,341,000 -42,496,000 -51,850,000 -56,757,000 -51,884,000 -68,544,000 -85,666,000 -74,636,000 -61,171,000 -68,701,000 -94,338,000 
      income tax provision
    -2,577,000 -5,254,000 840,000 1,192,000 1,644,000 -6,258,000 200,000 486,000 396,000 -60,000 590,000 309,000 198,000 -131,000 896,000 343,000  -33,000 428,000 584,000 
      net income
    -13,247,000 6,539,000 -3,634,000 -12,814,000 -21,600,000 15,236,000 -17,375,000 -28,066,000 -39,566,000 -35,281,000 -43,086,000 -52,159,000 -56,955,000 -51,753,000 -69,440,000 -86,009,000 -72,037,000 -61,138,000 -69,129,000 -94,922,000 
      yoy
    -38.67% -57.08% -79.08% -54.34% -45.41% -143.18% -59.67% -46.19% -30.53% -31.83% -37.95% -39.36% -20.94% -15.35% 0.45% -9.39%     
      qoq
    -302.58% -279.94% -71.64% -40.68% -241.77% -187.69% -38.09% -29.07% 12.15% -18.11% -17.39% -8.42% 10.05% -25.47% -19.26% 19.40% 17.83% -11.56% -27.17%  
      net income margin %
    -3.34% 1.66% -1.08% -4.15% -8.17% 4.84% -6.48% -12.32% -20.30% -16.77% -22.80% -30.36% -36.14% -29.55% -45.61% -62.64% -57.05% -45.34% -60.04% -88.80% 
      other comprehensive loss:
                        
      foreign currency translation adjustment
    5,875,000 -2,677,000 112,000 65,000 21,000 150,000 -146,000 -51,000 50,000 -113,000 283,000 -58,000 -147,000 -1,477,000 774,000 403,000 -244,000 88,000 -77,000 -129,000 
      total comprehensive loss
    -19,122,000 9,216,000 -3,746,000 -12,879,000 -21,621,000 15,086,000 -17,229,000 -28,015,000 -39,616,000 -35,168,000 -43,369,000 -52,101,000 -56,808,000 -50,276,000 -70,214,000 -86,412,000 -72,281,000 -61,050,000 -69,206,000 -95,051,000 
      net income per share
                        
      net loss available to common stockholders
    -13,247 6,539 -3,634 -12,814 -21,600 15,236 -17,375 -28,066 -39,566 -35,281 -43,086 -52,159 -56,955 227,206,761 -69,440,000 -86,009,000 -72,037,000 -61,138 -69,129 -98,088 
      basic loss per share
    -0.06 0.03 -0.02 -0.06 -0.1 0.09 -0.09 -0.16 -0.23 -0.21 -0.27 -0.34 -0.38 -0.35 -0.49 -0.63 -0.54 -0.35 -0.53 -1.92 
      diluted loss per share
    -0.06 0.03 -0.02 -0.06 -0.1 0.09 -0.09 -0.16 -0.23 -0.21 -0.27 -0.34 -0.38 -0.35 -0.49 -0.63 -0.54 -0.35 -0.53 -1.92 
      weighted-average number of shares used to compute net loss per share
                        
      basic
    238,552,591 220,722,814 222,440,882 217,253,856 212,558,050 185,984,107 187,905,129 177,870,238 171,234,353 156,697,308 158,055,789 154,597,506 150,045,840 138,985,265 140,594,128 135,903,592 134,084,703 86,932,191  51,202,335 
      diluted
    238,552,591 220,722,814 222,440,882 217,253,856 212,558,050 185,984,107 187,905,129 177,870,238 171,234,353 156,697,308 158,055,789 154,597,506 150,045,840 138,985,265 140,594,128 135,903,592 134,084,703 86,932,191  51,202,335 
      interest expense
     79,250 -180,000 166,000 331,000 17,000 1,945,000 2,560,000 2,625,000 2,800,000 2,894,000 2,797,000 2,448,000 2,301,000 2,038,000 1,666,000 1,298,000 1,328,000 1,342,000 1,402,000 
      other expenses /
       6,351,000            5,696,000     
      other comprehensive income:
                        
      change in fair value of warrants and derivative liabilities
                  -805,000 1,215,000    -18,600,000 
      acquisition related expenses
                 86,000   344,000 379,000 480,000 329,000 
      gain on extinguishment of debt
                       -10,000,000 
      cumulative redeemable convertible preferred stock dividends
                       3,166 
      total other expenses /
                   8,577,000     
      income tax benefit
                    -2,599,000    
      other expenses / (income)
                     257,750 496,000  
      other comprehensive income :
                        
      weighted average number of shares used to compute net loss per share
                        
      basic
                      129,731,980  
      diluted
                      129,731,980  
      other (incomes) / expenses
                       -749,000 
      total other (incomes) / expenses
                       -27,947,000 
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 
                          
        assets
                          
        current assets:
                          
        cash and cash equivalents
      288,779,000 319,764,000 385,184,000 365,314,000 364,398,000 366,157,000 418,538,000 154,704,000 141,649,000 131,732,000 120,796,000 117,066,000 107,794,000 121,110,000 114,808,000 110,779,000 103,863,000 103,859,000 116,180,000 113,568,000 
        accounts receivable
      321,660,000 322,391,000 272,262,000 251,007,000 223,759,000 235,227,000 203,711,000 182,801,000 160,591,000 170,131,000 140,408,000 122,023,000 109,405,000 106,322,000 91,414,000 89,541,000 75,558,000 83,578,000 72,785,000 72,044,000 
        prepaid expenses
      32,257,000 28,970,000 28,494,000 11,346,000 11,088,000 13,348,000 9,699,000 8,603,000 7,394,000 6,269,000 6,493,000 5,393,000 6,606,000 7,150,000 7,600,000 6,482,000 6,773,000 6,970,000 5,820,000 2,662,000 
        other current assets
      6,616,000 14,658,000 3,121,000 2,531,000 2,538,000 1,808,000 1,697,000 1,461,000 1,283,000 1,622,000 1,835,000 2,062,000 2,232,000 1,866,000 1,893,000 1,906,000 1,825,000 1,649,000 3,058,000 6,122,000 
        total current assets
      649,312,000 685,783,000 689,061,000 630,198,000 601,783,000 616,540,000 633,645,000 347,569,000 310,917,000 309,754,000 269,532,000 246,544,000 226,037,000 236,448,000 215,715,000 208,708,000 188,019,000 196,056,000 197,843,000 194,396,000 
        non-current assets:
                          
        property and equipment
      14,667,000 15,393,000 12,464,000 10,804,000 8,950,000 8,856,000 7,383,000 7,529,000 8,117,000 7,452,000 7,456,000 6,673,000 5,990,000 5,981,000 6,235,000 5,538,000 5,329,000 5,630,000 5,869,000 5,738,000 
        website and software development costs
      32,977,000 31,520,000 31,033,000 29,865,000 29,029,000 28,949,000 29,377,000 29,936,000 31,119,000 32,124,000 33,183,000 34,482,000 35,371,000 36,713,000 36,863,000 37,031,000 37,274,000 38,038,000 38,477,000 38,615,000 
        right-to-use assets - operating leases
      19,964,000 19,101,000 9,471,000 10,147,000 9,524,000 8,806,000 7,985,000 6,770,000   5,943,000 6,458,000         
        intangible assets
      202,855,000 217,943,000 85,550,000 95,181,000 105,038,000 115,180,000 43,032,000 44,838,000 46,497,000 48,781,000 50,099,000 52,029,000 50,827,000 44,358,000 45,601,000 47,808,000 50,092,000 40,963,000 28,932,000 32,734,000 
        goodwill
      522,007,000 527,886,000 317,375,000 317,672,000 325,999,000 325,992,000 140,919,000 140,903,000 140,903,000 140,905,000 140,894,000 140,903,000 141,018,000 133,069,000 133,009,000 133,029,000 133,049,000 114,509,000 81,917,000 81,924,000 
        deferred tax assets
      1,237,000 1,211,000 1,148,000 960,000 835,000 619,000 842,000 794,000 748,000 728,000 835,000 771,000 760,000 745,000 1,253,000 1,230,000 1,009,000 956,000 195,000  
        other non-current assets
      4,178,000 4,687,000 4,665,000 5,266,000 6,407,000 6,431,000 5,898,000 5,525,000 4,783,000 4,367,000 3,403,000 3,346,000 2,917,000 1,800,000 2,059,000 2,472,000 1,545,000 1,113,000 1,063,000 905,000 
        total non-current assets
      797,885,000 817,741,000 461,706,000 469,895,000 485,782,000 494,833,000 235,436,000 236,295,000 239,375,000 240,960,000 241,813,000 244,662,000 243,814,000 230,054,000 225,020,000 227,108,000 228,298,000 201,209,000 156,453,000 160,115,000 
        total assets
      1,447,197,000 1,503,524,000 1,150,767,000 1,100,093,000 1,087,565,000 1,111,373,000 869,081,000 583,864,000 550,292,000 550,714,000 511,345,000 491,206,000 469,851,000 466,502,000 440,735,000 435,816,000 416,317,000 397,265,000 354,296,000 354,511,000 
        liabilities and stockholders’ equity
                          
        current liabilities:
                          
        accounts payable
      32,158,000 40,136,000 29,074,000 48,035,000 32,535,000 43,665,000 58,486,000 46,533,000 53,360,000 63,572,000 59,173,000 55,925,000 38,485,000 33,668,000 28,400,000 38,069,000 17,272,000 21,711,000 27,905,000 30,869,000 
        accrued expenses
      173,033,000 179,087,000 156,569,000 115,948,000 115,318,000 121,400,000 107,658,000 108,168,000 83,533,000 85,455,000 73,135,000 64,463,000 65,570,000 72,364,000 63,516,000 53,213,000 62,353,000 63,979,000 50,619,000 48,867,000 
        acquisition-related liabilities
      47,875,000 149,036,000 24,938,000 13,834,000 13,803,000 12,727,000 12,983,000 11,414,000 15,515,000 17,234,000 21,812,000 19,165,000 15,910,000 14,743,000    8,042,000   
        deferred revenue
      37,430,000 35,398,000 4,034,000 3,856,000 6,016,000 10,348,000 3,586,000 3,683,000 4,455,000 3,301,000 2,332,000 3,381,000 3,708,000 2,228,000 6,104,000 5,864,000 5,699,000 6,866,000 2,739,000 3,612,000 
        other current liabilities
      23,714,000 25,824,000 14,195,000 12,156,000 13,104,000 11,197,000 8,202,000 6,153,000 7,564,000 6,823,000 6,086,000 4,356,000 6,372,000 5,707,000 8,258,000 6,871,000 6,469,000 5,159,000 5,044,000 7,356,000 
        total current liabilities
      314,210,000 429,481,000 228,810,000 193,829,000 180,776,000 199,337,000 190,915,000 175,951,000 164,427,000 176,385,000 162,538,000 147,290,000 130,045,000 128,710,000 123,498,000 124,550,000 109,212,000 105,757,000 102,462,000 96,979,000 
        non-current liabilities:
                          
        long-term borrowings
      197,282,000 197,083,000 196,884,000 196,686,000 196,487,000 196,288,000 196,089,000 184,351,000 184,249,000 184,147,000 184,044,000 183,942,000 183,840,000 183,953,000    183,613,000 183,528,000  
        deferred tax liabilities
      17,784,000 17,268,000                   
        other non-current liabilities
      15,295,000 15,656,000 10,150,000 10,995,000 10,047,000 9,810,000 7,210,000 6,516,000 6,905,000 6,602,000 6,504,000 7,043,000 7,464,000 7,877,000 2,225,000 2,298,000 2,370,000 2,492,000 3,790,000 2,585,000 
        total non-current liabilities
      252,662,000 269,454,000 232,751,000 233,008,000 230,192,000 235,235,000 203,299,000 190,867,000 194,264,000 193,809,000 199,029,000 206,568,000 209,880,000 209,762,000 208,125,000 204,361,000 202,760,000 201,020,000 196,049,000 204,474,000 
        total liabilities
      566,872,000 698,935,000 461,561,000 426,837,000 410,968,000 434,572,000 394,214,000 366,818,000 358,691,000 370,194,000 361,567,000 353,858,000 339,925,000 338,472,000 331,623,000 328,911,000 311,972,000 306,777,000 298,511,000 301,453,000 
        commitments and contingencies
                          
        stockholders’ equity:
                          
        class a common stock 0.001 par value...
      225,000                    
        class b common stock 0.001 par value...
      24,000                    
        additional paid-in capital
      1,958,549,000 1,863,695,000 1,757,535,000 1,737,840,000 1,728,303,000 1,706,885,000 1,520,044,000 1,245,005,000 1,191,545,000 1,140,849,000 1,074,943,000 1,019,144,000 959,627,000 900,924,000 831,731,000 759,311,000 670,342,000 584,208,000 511,929,000 439,999,000 
        accumulated deficit
      -1,073,064,000 -1,059,817,000 -1,066,356,000 -1,062,722,000 -1,049,908,000 -1,028,308,000 -1,043,544,000 -1,026,169,000 -998,103,000 -958,537,000 -923,256,000 -880,170,000 -828,011,000 -771,056,000 -719,303,000 -649,863,000 -563,854,000 -491,817,000 -430,679,000 -361,550,000 
        accumulated other comprehensive gain
      -5,409,000 466,000                   
        total stockholders’ equity
      880,325,000 804,589,000 689,206,000 673,256,000 676,597,000 676,801,000 474,867,000 217,046,000 191,601,000 180,520,000 149,778,000 137,348,000 129,926,000 128,030,000       
        total liabilities and stockholders’ equity
      1,447,197,000 1,503,524,000                   
        class a common stock
       221,000 214,000 213,000 212,000 213,000 205,000 192,000 190,000 189,000 184,000 182,000 176,000 175,000 174,000 170,000 165,000 160,000   
        class b common stock
       24,000 24,000 24,000 24,000 24,000 25,000 27,000 29,000 29,000 30,000 32,000 32,000 32,000 32,000 35,000 37,000 38,000 38,000 38,000 
        accumulated other comprehensive loss
        -2,211,000 -2,099,000 -2,034,000 -2,013,000 -1,863,000 -2,009,000 -2,060,000 -2,010,000 -2,123,000 -1,840,000 -1,898,000 -2,045,000 -3,522,000 -2,748,000 -2,345,000 -2,101,000 -2,189,000 -2,112,000 
        total liabilities and stockholders' equity
        1,150,767,000 1,100,093,000 1,087,565,000 1,111,373,000 869,081,000 583,864,000 550,292,000 550,714,000 511,345,000 491,206,000 469,851,000 466,502,000 440,735,000 435,816,000 416,317,000    
        right-to-use asset - operating leases
              7,208,000 6,603,000   6,931,000 7,388,000       
        acquisition related liabilities
                    17,220,000 20,533,000 17,419,000  16,155,000 6,275,000 
        long term borrowings
                    183,868,000 183,783,000 183,698,000   183,443,000 
        total stockholders' equity
                    109,112,000 106,905,000 104,345,000    
        liabilities, mezzanine equity and stockholders’ equity /
                          
        warrants and derivative liabilities
                          
        mezzanine equity:
                          
        redeemable convertible preferred stock
                          
        stockholders’ equity /
                          
        series a common stock 0.001 per share par value, up to 204,220,800 shares authorized, 112,012,693 shares issued and outstanding as of december 31, 2020
                          
        series b common stock 0.001 per share par value, up to 3,400,000 shares authorized, 3,054,318 shares issued and outstanding as of december 31, 2020
                          
        total stockholders’ equity /
                       90,488,000 55,785,000 53,058,000 
        total liabilities, mezzanine equity and stockholders’ equity /
                       397,265,000   
        liabilities and stockholders’ equity /
                          
        series a common stock 0.001 per share value, up to 204,220,800 shares authorized, 112,012,693 shares issued and outstanding as of december 31, 2020
                          
        treasury common stock, 8,195,464 shares repurchased at a weighted average price of 2.86 per share
                        -23,469,000  
        class a common stock, par value 0.001 per share...
                        155,000 152,000 
        total liabilities and stockholders’ equity /
                        354,296,000 354,511,000 
        deferred tax assets,
                         199,000 
        treasury common stock, 8,195,464 shares repurchased at a weighted-average price of 2.86 per share
                         -23,469,000 
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 
                           
          cash flows from operating activities:
                           
          net loss
        -13,247,000 6,539,000 -3,634,000 -12,814,000 -21,600,000 15,236,000 -17,375,000 -28,066,000 -39,566,000 -35,281,000 -43,086,000 -52,159,000 -56,955,000 -51,753,000 -69,440,000 -86,009,000 -72,037,000 -61,138,000 -69,129,000 
          adjustments to reconcile net loss to net cash from operating activities:
                           
          depreciation and amortization
        23,529,000 19,758,000 17,191,000 17,403,000 17,687,000 16,805,000 12,590,000 12,964,000 13,741,000 13,495,000 13,233,000 12,596,000 11,825,000 12,430,000 13,367,000 13,315,000 12,766,000 12,787,000 11,783,000 
          stock-based compensation
        53,032,000 43,731,000 45,632,000 46,471,000 41,987,000 43,010,000 47,177,000 52,159,000 52,638,000 63,135,000 57,672,000 57,612,000 64,462,000 67,703,000 75,218,000 82,335,000 73,736,000 70,546,000 69,343,000 
          deferred income taxes
        126,000 -4,474,000 173,000 -110,000 -235,000 -7,147,000 -46,000 -47,000 -20,000 107,000 -64,000 10,000 -42,000 446,000 -24,000 -220,000 -2,870,000 -840,000 6,000 
          change in fair value of acquisition-related liabilities
        -4,744,000 16,064,000 11,494,000 5,705,000 3,460,000 -2,367,000 2,649,000 -1,765,000 504,000 519,000 2,416,000 2,613,000 1,652,000       
          others
        -157,000 -7,602,000 1,383,000 3,280,000 -519,000 -107,000 -350,000 492,000 -42,000 829,000 220,000 920,000 46,000 -12,610,000 653,000 5,634,000 5,731,000   
          change in non-cash working capital
                           
          accounts receivable
        730,000 -36,920,000 -21,247,000 -30,464,000 11,397,000 -7,323,000 -21,443,000 -22,692,000 9,622,000 -30,746,000 -18,122,000 -13,169,000 -2,015,000 -15,231,000 145,000 -14,317,000 9,577,000 -8,578,000  
          prepaid expenses
        -3,118,000 8,500,000 -17,143,000 -281,000 2,219,000 -2,818,000 -1,097,000 -1,073,000 -1,279,000 189,000 -1,018,000 1,363,000 527,000 219,000 -1,013,000 291,000 233,000 -1,150,000 -3,158,000 
          other current assets
        8,057,000 6,530,000 -584,000 7,000 -730,000 175,000 -233,000 -178,000 339,000 212,000 227,000 170,000 -366,000 27,000 -512,000 444,000 -173,000 1,409,000 3,064,000 
          other non-current assets
        509,000 274,000 610,000 141,000 15,000 -529,000 -372,000 -739,000 -414,000 -919,000 -57,000 -438,000 -112,000 -87,000 853,000 -271,000 -432,000 -50,000 -158,000 
          deferred revenue
        1,920,000 -2,964,000 187,000 -2,207,000 -4,336,000 5,974,000 -87,000 -657,000 1,026,000 1,118,000 -1,265,000 -426,000 1,380,000 -3,801,000 251,000 165,000 -1,181,000 4,127,000 -874,000 
          accounts payable
        -8,114,000 6,435,000 -17,632,000 13,756,000 -11,053,000 -24,582,000 11,408,000 -4,679,000 -10,727,000 3,648,000 2,526,000 14,892,000 5,196,000 6,277,000 -11,450,000 21,141,000 -2,438,000 -4,282,000 -3,878,000 
          accrued expenses and other current liabilities
        -8,409,000 3,845,000 42,363,000 213,000 -3,728,000 7,373,000 887,000 25,780,000 -1,459,000 11,218,000 10,170,000 -3,407,000 -5,538,000 8,223,000 12,369,000 -8,984,000 -1,607,000 11,856,000 1,260,000 
          other non-current liabilities
        -380,000 4,419,000 -874,000 949,000 235,000 -17,000 694,000 -389,000 303,000 -562,000 -24,000 52,000 44,000 -1,736,000 -73,000 -72,000 -122,000 -1,297,000 1,204,000 
          net cash from operating activities
        49,734,000 64,135,000 57,919,000 42,049,000 34,799,000 43,683,000 34,402,000 31,110,000 24,666,000 26,962,000 22,828,000 20,629,000 20,104,000 23,097,000 19,539,000 14,667,000 21,183,000 20,926,000 10,163,000 
          cash flows from investing activities:
                           
          capital expenditures
        -3,012,000 -3,257,000 -5,473,000 -2,349,000 -2,736,000 -8,269,000 -4,893,000 -6,754,000 -5,811,000 -5,597,000 -5,936,000 -3,786,000 -5,164,000 -5,067,000 -5,654,000 -4,768,000 -6,743,000 -2,599,000 -2,502,000 
          free cash flows
        46,722,000 60,878,000 52,446,000 39,700,000 32,063,000 35,414,000 29,509,000 24,356,000 18,855,000 21,365,000 16,892,000 16,843,000 14,940,000 18,030,000 13,885,000 9,899,000 14,440,000 18,327,000 7,661,000 
          website and software development costs
        -5,542,000 -4,981,000 -5,159,000 -5,798,000 -4,155,000 -3,930,000 -3,898,000 -4,569,000 -3,643,000 -3,143,000 -3,438,000 -4,006,000 -4,900,000 -4,184,000 -4,234,000 -4,121,000 -4,465,000 -3,853,000 -3,892,000 
          acquisitions and other investments, net of cash acquired
        -47,000,000 -89,103,000 -672,000 -530,000     1,000 -2,394,000 -15,852,000       
          net cash from investing activities
        -55,554,000 -97,341,000 -10,632,000 -8,819,000 -7,421,000 -68,018,000 -8,791,000 -11,323,000 -9,454,000 -8,739,000 -9,374,000 -10,186,000 -25,916,000 -9,251,000 -9,940,000 -8,889,000 -20,365,000 -24,386,000 -6,394,000 
          cash flows from financing activities:
                           
          cash paid for acquisition-related liabilities
        -241,000 -2,666,000 -3,667,000 -80,000 -4,779,000 -2,173,000 -6,798,000 -6,222,000 -1,508,000 -980,000 -3,667,000 -1,000,000 -645,000 -647,000   
          proceeds from credit facilities, net of issuance cost
        10,000,000 6,250,000 1,250,000 196,603,000 11,250,000 8,437,000 2,813,000       
          exercise of options
        302,000 495,000 777,000 841,000 123,000  1,141,000 1,407,000 434,000 17,000 141,000 42,000 41,000  35,000 65,000 65,000   
          repurchase of shares
        -25,728,000 -35,003,000 -28,033,000 -32,049,000 -25,882,000 -29,933,000 -3,889,000 -4,919,000 -3,444,000 -1,956,000 -3,549,000 -1,405,000 -6,533,000 -5,297,000      
          repayments against the credit facilities
        -10,000,000 -6,250,000 -1,250,000 -185,000,000 -11,250,000 -8,437,000 -2,813,000 -4,219,000 -1,406,000 
          net cash from financing activities
        -25,667,000 -32,165,000 -27,256,000 -31,970,000 -29,426,000 -28,230,000 238,102,000 -6,766,000 -5,183,000 -7,246,000 -9,630,000 -1,304,000 -7,472,000 -7,508,000 -5,275,000 740,000 -582,000 -8,950,000 -1,094,000 
          effect of exchange rate changes on cash and cash equivalents
        502,000 -49,000 -161,000 -344,000 289,000 184,000 121,000 34,000 -112,000 -41,000 -94,000 133,000 -32,000 -36,000 -295,000 398,000 -232,000 89,000 -63,000 
          net decrease in cash and cash equivalents
        -30,985,000                   
          cash and cash equivalents, beginning of period
        319,764,000 366,157,000 131,732,000 121,110,000  103,859,000   
          cash and cash equivalents, end of period
        288,779,000 -65,420,000 19,870,000 916,000 364,398,000 -52,381,000 263,834,000 13,055,000 141,649,000 10,936,000 3,730,000 9,272,000 107,794,000  4,029,000 6,916,000 103,863,000   
          supplemental cash flow disclosures including non-cash activities:
                           
          cash paid for interest
        490,000 -122,000 -388,000 -35,000 1,450,000 -144,000 2,476,000 2,296,000 2,720,000 2,796,000 2,702,000 2,519,000 2,464,000 1,670,000 1,517,000 1,265,000 1,221,000 1,331,000 1,296,000 
          cash paid for income taxes
        1,434,000 1,029,000 574,000 1,083,000 376,000 713,000 535,000 252,000 386,000 626,000 522,000   497,000 634,000 357,000 123,000 464,000 353,000 
          liability established in connection with acquisitions
        2,064,000 137,831,000 11,494,000 5,705,000 3,460,000 28,881,000   504,000 519,000 2,266,000 2,613,000 2,791,000 756,000 1,439,000 5,450,000 12,884,000 8,390,000  
          capitalized stock-based compensation as website and software development
        929,000 743,000 826,000 697,000 651,000               
          shares issued in connection with acquisitions and other agreements
        66,322,000 93,864,000 500,000 666,000 3,667,000 171,932,000 1,125,000   4,044,000 500,000   4,069,000 3,853,000 11,083,000 23,000,000 1,196,000 
          right-to-use assets established
        3,090,000 12,182,000 2,416,000 115,000 1,677,000 2,039,000 1,899,000             
          operating lease liabilities established
        3,090,000 12,190,000 2,395,000 115,000 1,677,000 2,039,000 1,899,000 198,000 883,000           
          non-cash consideration for website and software development
        277,000 61,000 308,000 347,000 427,000               
          issuance under employee stock purchase plan
         2,343,000              
          proceeds from equity capital raise, net of issuance cost
             -371,000              
          net increase in cash and cash equivalents
         -65,420,000 19,870,000 916,000 -1,759,000 -52,381,000 263,834,000 13,055,000 9,917,000 10,936,000 3,730,000 9,272,000 -13,316,000  4,029,000 6,916,000 4,000   
          change in fair value of warrant and derivative liabilities
                         
          issuances under employee stock purchase plan
                           
          exercise of options and warrants
                           
          non-cash settlement of warrants and derivative liabilities
                         
          capitalized stock-based compensation as website and software development costs
              538,000 621,000 1,091,000  1,003,000 879,000 752,000 1,263,000 1,478,000 1,399,000 1,254,000 1,366,000  
          non-cash consideration for website and software development costs
              219,000 -28,000 430,000  271,000 294,000 219,000 673,000 349,000 341,000 291,000 1,506,000  
          right-to-use asset established
                883,000           
          gain on extinguishment of debt
                         
          proceeds from initial public offering, net of issuance cost
                           
          dividends on redeemable convertible preferred stock settled in company’s equity
                         
          cash paid for income taxes, net of refund
                    46,000       
          business and asset acquisitions, net of cash acquired
                         -17,934,000 
          proceeds from pay-check protection program loan
                           
          proceeds from employees’ stock purchase plan
                           
          exercise of warrants and options
                         27,000  
          net increase in cash and cash equivalents, including restricted cash
                           
          cash and cash equivalents and restricted cash, beginning of period
                           
          cash and cash equivalents and restricted cash, end of period
                           
          gain on debt extinguishment
                           
          change in fair value of warrants and derivative liabilities
                           
          business acquisitions, net of cash acquired
                      -52,000 -9,157,000   
          proceeds from credit facilities, net of issuance costs
                      4,219,000 1,406,000   
          proceeds from ipo, net of issuance cost
                           
          repurchase of rsas and rsus
                           
          proceeds from term loan, net of issuance costs
                           
          repurchase of restricted stock
                         -338,000 
          proceeds from credit lines
                           
          other
                           
          changes in non-cash working capital
                           
          proceeds from initial public offering, net of issuance costs
                          -825,000 
          cash paid for acquisition related liabilities
                          
          proceeds from term loan, net of issuance cost
                          
          proceeds from paycheck protection program loan
                           
          account receivable
                           
          exercise of warrants
                           
          net increase in cash and cash equivalents and restricted cash
                           
          contingent consideration liability established in connection with acquisitions
                           
          capitalized stock-based compensation expense as website and software development costs