OUTBRAIN INC (OB) 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 June 30, 2026. The institutional investors covered on this page collectively reported approximately $15.07M 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 $4.41M in its June 30, 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, Vanguard Capital Management Llc, 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
83
Total Reported Value
$15.07M
Largest Holder
Value Base Ltd.
Largest Position
$4.41M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
122
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Value Base Ltd. | 2.72% | 5,752,107 | $4,411,291 | — | — | — | |
| Whitefort Capital Management, Lp | 0.87% | 4,609,163 | $3,534,767 | — | — | — | |
| Vanguard Capital Management Llc | 0.00% | 1,582,009 | $1,213,401 | — | — | — | |
| Aqr Capital Management Llc | 0.00% | 1,041,321 | $798,590 | — | — | — | |
| Susquehanna International Group, Llp | 0.00% | 1,008,138 | $773,141 | — | — | — | |
| Blackrock, Inc. | 0.00% | 863,741 | $662,404 | — | — | — | |
| Millennium Management Llc | 0.00% | 456,573 | $350,146 | — | — | — | |
| Bridgeway Capital Management, Llc | 0.01% | 449,901 | $345,029 | — | — | — | |
| Geode Capital Management, Llc | 0.00% | 404,687 | $310,423 | — | — | — | |
| Bank Of America Corp | 0.00% | 375,022 | $287,267 | — | — | — | |
| Empowered Funds, Llc | 0.00% | 319,401 | $244,949 | — | — | — | |
| Goldman Sachs Group Inc | 0.00% | 308,141 | $236,313 | — | — | — | |
| Partners Capital Investment Group, Llp | 0.01% | 209,407 | $160,594 | — | — | — | |
| Jane Street Group, Llc | 0.00% | 202,201 | $155,068 | — | — | — | |
| Vanguard Fiduciary Trust Co | 0.00% | 188,923 | $144,904 | — | — | — | |
| State Street Corp | 0.00% | 174,190 | $133,586 | — | — | — | |
| Two Sigma Investments, Lp | 0.00% | 161,058 | $123,515 | — | — | — | |
| Qube Research & Technologies Ltd | 0.00% | 125,832 | $96,501 | — | — | — | |
| Rbf Capital, Llc | 0.00% | 110,000 | $84,359 | — | — | — | |
| Point72 Asset Management, L.P. | 0.00% | 96,272 | $73,831 | — | — | — | |
| Ieq Capital, Llc | 0.00% | 83,451 | $63,999 | — | — | — | |
| Yelin Lapidot Holdings Management Ltd. | 0.01% | 79,959 | $61,321 | — | — | — | |
| Evergreen Capital Management Llc | 0.00% | 79,532 | $60,994 | — | — | — | |
| Jpmorgan Chase & Co | 0.00% | 65,620 | $52,305 | — | — | — | |
| Northern Trust Corp | 0.00% | 67,490 | $51,758 | — | — | — | |
| Barclays Plc | 0.00% | 66,240 | $50,799 | — | — | — | |
| Robertson Stephens Wealth Management, Llc | 0.00% | 58,198 | $44,632 | — | — | — | |
| Citadel Advisors Llc | 0.00% | 49,473 | $37,941 | — | — | — | |
| Hsbc Holdings Plc | 0.00% | 49,493 | $37,006 | — | — | — | |
| Cerity Partners Llc | 0.00% | 44,048 | $33,780 | — | — | — | |
| Mariner, Llc | 0.00% | 39,093 | $29,983 | — | — | — | |
| Fmr Llc | 0.00% | 38,980 | $29,894 | — | — | — | |
| Castleknight Management Lp | 0.00% | 35,011 | $26,850 | — | — | — | |
| Morgan Stanley | 0.00% | 31,640 | $24,265 | — | — | — | |
| Wealth Enhancement Advisory Services, Llc | 0.00% | 27,772 | $22,909 | — | — | — | |
| Mercer Global Advisors Inc | 0.00% | 26,179 | $20,077 | — | — | — | |
| Cwm, Llc | 0.00% | 30,240 | $19,916 | — | — | — | |
| Arax Advisory Partners | 0.00% | 22,979 | $17,622 | — | — | — | |
| Engineers Gate Manager Lp | 0.00% | 20,517 | $15,734 | — | — | — | |
| Abel Hall, Llc | 0.00% | 19,025 | $14,590 | — | — | — | |
| Jasper Ridge Partners, L.P. | 0.00% | 17,868 | $13,703 | — | — | — | |
| Callan Family Office, Llc | 0.00% | 17,514 | $13,431 | — | — | — | |
| Proficio Capital Partners Llc | 0.00% | 16,983 | $13,024 | — | — | — | |
| Smartharvest Portfolios, Llc | 0.00% | 16,417 | $12,590 | — | — | — | |
| Hightower Advisors, Llc | 0.00% | 15,877 | $12,176 | — | — | — | |
| Two Sigma Securities, Llc | 0.00% | 14,558 | $11,165 | — | — | — | |
| Captrust Financial Advisors | 0.00% | 14,454 | $11,085 | — | — | — | |
| Centiva Capital, Lp | 0.00% | 14,026 | $10,757 | — | — | — | |
| Vanguard Personalized Indexing Management, Llc | 0.00% | 13,152 | $10,086 | — | — | — | |
| Wealthcare Advisory Partners Llc | 0.00% | 13,052 | $10,010 | — | — | — |
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.