- Google LLC - 74.50%
- Microsoft Corporation - 31.30%
- Facebook, Inc. - 22.90%
- Amazon Technologies, Inc. - 19.00%
- The Trade Desk Inc - 18.40%
- Adobe Inc. - 17.60%
- Magnite, Inc. - 15.90%
- Cloudflare, Inc. - 14.50%
- OpenX Technologies Inc - 14.30%
- PubMatic, Inc. - 13.90%
- Yahoo Inc. - 13.60%
- LiveRamp Holdings, Inc. - 13.10%
- Tapad, Inc. - 13.00%
- Lotame Solutions, Inc. - 12.60%
- Index Exchange, Inc. - 11.60%
- ID5 Technology Ltd - 11.10%
- Amobee, Inc - 10.90%
- IPONWEB GmbH - 10.40%
- LiveIntent Inc. - 10.10%
- TripleLift - 10.10%
- Criteo SA - 9.99%
- RTB House S.A. - 9.95%
- Conversant LLC - 9.65%
- Smartadserver S.A.S - 9.36%
- Media.net Advertising FZ-LLC - 9.26%
- RhythmOne - 9.15%
- Sharethrough, Inc. - 9.13%
- Collective Roll - 9.04%
- 33Across, Inc. - 9.03%
- OneTrust LLC - 9.02%
- Sovrn Holdings - 9.01%
- Quantcast Corporation - 8.05%
- Beeswax - 7.86%
- Adelphic, Inc. - 7.77%
- Adform A/S - 7.73%
- Outbrain - 7.27%
- comScore, Inc - 7.20%
- Centro, Inc. - 7.17%
- Pulsepoint, Inc. - 7.12%
- Simplifi Holdings Inc. - 7.01%
- Zeta Global - 6.82%
- GumGum - 6.66%
- Unruly Group Limited - 6.59%
- Pinduoduo Inc. - 6.57%
- DeepIntent Inc - 6.29%
- Improve Digital BV - 6.15%
- YieldMo, Inc. - 6.09%
- Sonobi, Inc - 5.72%
- Pinterest, Inc. - 5.39%
- Twitter, Inc. - 5.38%
- TransUnion LLC - 5.36%
- Almondnet Group - 5.33%
- ByteDance Ltd. - 5.13%
- FreeWheel - 4.99%
- Monet Engine Inc. - 4.94%
- OnAudience Ltd. - 4.84%
- The Nielsen Company - 4.80%
- Throtle - 4.80%
- Prospect One - 4.67%
- Hotjar Ltd - 4.62%
- Opera Software AS - 4.56%
- Teads ( Luxenbourg ) SA - 4.54%
- Smaato Inc. - 4.38%
- Kargo Global, Inc. - 4.18%
- Taboola, Inc. - 4.11%
- eyeota Limited - 4.05%
- Mediavine, Inc. - 3.94%
- Unity Software Inc. - 3.90%
- ADman Media - 3.82%
- Online Media Solutions Ltd. dba Brightcom - 3.80%
- InMobi Pte Ltd - 3.77%
- Blockthrough Inc. - 3.65%
- Klaviyo - 3.63%
- Nativo, Inc - 3.40%
- Akamai Technologies - 3.39%
- Audigent - 3.37%
- Shopify Inc. - 3.27%
- Rich Audience Technologies - 3.22%
- Brandmetrics - 3.21%
- WPP plc - 3.16%
- Adkernel, LLC - 3.14%
- Automattic, Inc. - 3.14%
- Mediaocean LLC - 3.10%
- Merkle Inc - 3.08%
- New Relic - 2.81%
- OpenJS Foundation - 2.76%
- Reddit Inc. - 2.76%
- Ogury Limited - 2.74%
- Vidazoo Ltd - 2.74%
- Blis Global Ltd - 2.71%
- Adyoulike - 2.61%
- MediaMath, Inc. - 2.53%
- SEEDTAG ADVERTISING S.L. - 2.53%
- AdThrive, LLC - 2.48%
- KBM Group LLC - 2.44%
- Bombora Inc. - 2.41%
- Disqus, Inc. - 2.32%
- Supership Inc - 2.29%
- HubSpot, Inc. - 2.28%
- Valassis Digital - 2.25%