OUTBRAIN INC (OB) Top Institutional Shareholders
OUTBRAIN INC (OB) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $13.91M in OB holdings during the latest filing period.
Value Base Ltd. is currently the largest disclosed institutional shareholder of OB tracked by InsiderSet, reporting ownership valued at approximately $3.79M in its March 31, 2026 SEC Form 13F filing.
The top 10 institutional shareholders tracked on this page collectively account for approximately 84% of the total disclosed OB value among the investors covered in this analysis. Major shareholders include Value Base Ltd., Whitefort Capital Management, Lp, Blackrock, Inc., and several other long-term asset managers with concentrated positions in OUTBRAIN INC (OB).
This page ranks the largest institutional OB shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
88
Total Reported Value
$13.91M
Largest Holder
Value Base Ltd.
Largest Position
$3.79M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
107
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Value Base Ltd. | 2.99% | 5,752,107 | $3,788,338 | — | — | — | |
| Whitefort Capital Management, Lp | 0.72% | 3,610,103 | $2,377,614 | — | — | — | |
| Blackrock, Inc. | 0.00% | 2,660,038 | $1,751,901 | — | — | — | |
| Vanguard Capital Management Llc | 0.00% | 1,667,760 | $1,099,054 | — | — | — | |
| Geode Capital Management, Llc | 0.00% | 948,060 | $624,448 | — | — | — | |
| Susquehanna International Group, Llp | 0.00% | 839,979 | $553,210 | — | — | — | |
| Aqr Capital Management Llc | 0.00% | 732,181 | $482,214 | — | — | — | |
| State Street Corp | 0.00% | 689,741 | $454,263 | — | — | — | |
| Bridgeway Capital Management, Llc | 0.01% | 434,367 | $286,074 | — | — | — | |
| Bank Of America Corp | 0.00% | 381,771 | $251,205 | — | — | — | |
| Empowered Funds, Llc | 0.00% | 319,401 | $210,358 | — | — | — | |
| Northern Trust Corp | 0.00% | 303,216 | $199,698 | — | — | — | |
| Two Sigma Investments, Lp | 0.00% | 211,439 | $139,254 | — | — | — | |
| Partners Capital Investment Group, Llp | 0.01% | 209,407 | $137,915 | — | — | — | |
| Vanguard Portfolio Management Llc | 0.00% | 209,086 | $137,788 | — | — | — | |
| Goldman Sachs Group Inc | 0.00% | 202,321 | $133,249 | — | — | — | |
| Vanguard Fiduciary Trust Co | 0.00% | 202,195 | $133,247 | — | — | — | |
| Ubs Group Ag | 0.00% | 118,741 | $78,251 | — | — | — | |
| Robertson Stephens Wealth Management, Llc | 0.00% | 116,395 | $76,658 | — | — | — | |
| Rbf Capital, Llc | 0.00% | 110,000 | $72,446 | — | — | — | |
| Yelin Lapidot Holdings Management Ltd. | 0.01% | 96,643 | $63,649 | — | — | — | |
| Charles Schwab Investment Management Inc | 0.00% | 90,279 | $59,458 | — | — | — | |
| Jane Street Group, Llc | 0.00% | 84,306 | $55,524 | — | — | — | |
| Evergreen Capital Management Llc | 0.00% | 79,532 | $52,380 | — | — | — | |
| Bank Of New York Mellon Corp | 0.00% | 76,444 | $50,346 | — | — | — | |
| Barclays Plc | 0.00% | 71,521 | $47,104 | — | — | — | |
| Nuveen, Llc | 0.00% | 56,672 | $37,324 | — | — | — | |
| Qube Research & Technologies Ltd | 0.00% | 52,610 | $34,649 | — | — | — | |
| Hsbc Holdings Plc | 0.00% | 50,729 | $33,324 | — | — | — | |
| Eversource Wealth Advisors, Llc | 0.00% | 1,783 | $31,009 | — | — | — | |
| Nine Masts Capital Ltd | 0.00% | 46,639 | $30,716 | — | — | — | |
| Rhumbline Advisers | 0.00% | 44,832 | $29,538 | — | — | — | |
| Morgan Stanley | 0.00% | 42,929 | $28,273 | — | — | — | |
| Fmr Llc | 0.00% | 39,844 | $26,242 | — | — | — | |
| Castleknight Management Lp | 0.00% | 35,011 | $23,058 | — | — | — | |
| Ieq Capital, Llc | 0.00% | 34,896 | $22,982 | — | — | — | |
| Alliancebernstein L.P. | 0.00% | 30,140 | $21,216 | — | — | — | |
| Cwm, Llc | 0.00% | 30,240 | $19,916 | — | — | — | |
| Abel Hall, Llc | 0.00% | 29,048 | $19,131 | — | — | — | |
| Cerity Partners Llc | 0.00% | 26,870 | $17,696 | — | — | — | |
| Mariner, Llc | 0.00% | 20,665 | $13,609 | — | — | — | |
| Engineers Gate Manager Lp | 0.00% | 20,517 | $13,513 | — | — | — | |
| Tower Research Capital Llc (Trc) | 0.00% | 20,476 | $13,485 | — | — | — | |
| Jasper Ridge Partners, L.P. | 0.00% | 17,868 | $11,768 | — | — | — | |
| Vanguard Personalized Indexing Management, Llc | 0.00% | 17,606 | $11,595 | — | — | — | |
| Mirae Asset Global Etfs Holdings Ltd. | 0.00% | 17,597 | $11,589 | — | — | — | |
| Wealth Enhancement Advisory Services, Llc | 0.00% | 16,395 | $11,549 | — | — | — | |
| Wealthcare Advisory Partners Llc | 0.00% | 16,399 | $10,800 | — | — | — | |
| Hightower Advisors, Llc | 0.00% | 15,657 | $10,312 | — | — | — | |
| Creative Planning | 0.00% | 14,825 | $9,764 | — | — | — |
Frequently asked questions about OB
Who owns the most OB stock?
The largest holders of OB are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for OUTBRAIN INC (OB).
Is OB widely held by superinvestors?
Many widely followed stocks like OB appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly OB is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.