- Google LLC - 74.80%
- Microsoft Corporation - 31.70%
- Facebook, Inc. - 23.00%
- Amazon Technologies, Inc. - 19.10%
- The Trade Desk Inc - 19.10%
- Adobe Inc. - 17.60%
- Cloudflare, Inc. - 16.50%
- Magnite, Inc. - 16.50%
- PubMatic, Inc. - 14.60%
- Yahoo Inc. - 14.10%
- OpenX Technologies Inc - 13.90%
- Tapad, Inc. - 13.50%
- LiveRamp Holdings, Inc. - 13.40%
- Lotame Solutions, Inc. - 13.00%
- Index Exchange, Inc. - 12.40%
- Amobee, Inc - 11.10%
- IPONWEB GmbH - 11.00%
- LiveIntent Inc. - 10.80%
- TripleLift - 10.80%
- ID5 Technology Ltd - 10.70%
- Criteo SA - 10.10%
- Smartadserver S.A.S - 9.85%
- Conversant LLC - 9.74%
- Sovrn Holdings - 9.49%
- RTB House S.A. - 9.48%
- RhythmOne - 9.48%
- 33Across, Inc. - 9.42%
- Collective Roll - 9.26%
- Sharethrough, Inc. - 9.21%
- OneTrust LLC - 9.07%
- Beeswax - 8.77%
- Outbrain - 8.58%
- Media.net Advertising FZ-LLC - 8.02%
- Adform A/S - 7.78%
- Pulsepoint, Inc. - 7.77%
- Quantcast Corporation - 7.55%
- comScore, Inc - 7.34%
- Improve Digital BV - 7.07%
- Adelphic, Inc. - 7.06%
- Simplifi Holdings Inc. - 6.85%
- Unruly Group Limited - 6.84%
- Pinduoduo Inc. - 6.80%
- GumGum - 6.78%
- Sonobi, Inc - 6.64%
- Centro, Inc. - 6.57%
- Throtle - 6.21%
- YieldMo, Inc. - 6.12%
- Almondnet Group - 6.05%
- Zeta Global - 5.92%
- The Nielsen Company - 5.62%
- Teads ( Luxenbourg ) SA - 5.56%
- Twitter, Inc. - 5.52%
- Pinterest, Inc. - 5.38%
- TransUnion LLC - 5.35%
- FreeWheel - 5.33%
- Smaato Inc. - 5.07%
- ByteDance Ltd. - 5.03%
- Monet Engine Inc. - 4.95%
- Opera Software AS - 4.88%
- DeepIntent Inc - 4.72%
- Mediavine, Inc. - 4.72%
- Hotjar Ltd - 4.71%
- Taboola, Inc. - 4.71%
- Kargo Global, Inc. - 4.66%
- Prospect One - 4.48%
- Online Media Solutions Ltd. dba Brightcom - 4.27%
- InMobi Pte Ltd - 4.04%
- Nativo, Inc - 4.04%
- Confiant, Inc. - 3.78%
- OnAudience Ltd. - 3.69%
- Unity Software Inc. - 3.68%
- Disqus, Inc. - 3.64%
- Blockthrough Inc. - 3.61%
- eyeota Limited - 3.53%
- Klaviyo - 3.52%
- Akamai Technologies - 3.49%
- Adyoulike - 3.38%
- Brandmetrics - 3.20%
- Audigent - 3.19%
- Automattic, Inc. - 3.15%
- Vidazoo Ltd - 3.14%
- ADman Media - 3.13%
- MediaMath, Inc. - 3.13%
- Merkle Inc - 2.99%
- Shopify Inc. - 2.90%
- OpenJS Foundation - 2.88%
- New Relic - 2.86%
- WPP plc - 2.84%
- Mediaocean LLC - 2.75%
- SEEDTAG ADVERTISING S.L. - 2.70%
- Reddit Inc. - 2.65%
- AdThrive, LLC - 2.53%
- Blis Global Ltd - 2.52%
- Rich Audience Technologies - 2.39%
- Bombora Inc. - 2.36%
- HubSpot, Inc. - 2.31%
- Supership Inc - 2.30%
- Ogury Limited - 2.21%
- McCann Disciplines Ltd. - 2.19%
- KBM Group LLC - 2.15%