AGENUS INC (AGEN) Top Institutional Shareholders
AGENUS INC (AGEN) 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 $29.96M in AGEN holdings during the latest filing period.
Vanguard Capital Management Llc is currently the largest disclosed institutional shareholder of AGEN tracked by InsiderSet, reporting ownership valued at approximately $4.81M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $4.26M, representing an estimated loss of -11.38% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 71% of the total disclosed AGEN value among the investors covered in this analysis. Major shareholders include Vanguard Capital Management Llc, Vanguard Portfolio Management Llc, Siren, L.L.C., and several other long-term asset managers with concentrated positions in AGENUS INC (AGEN).
This page ranks the largest institutional AGEN 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
85
Total Reported Value
$29.96M
Largest Holder
Vanguard Capital Management Llc
Largest Position
$4.81M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
109
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Vanguard Capital Management Llc | 0.00% | 1,440,232 | $4,810,375 | $4,263,087 | -$547,288 | -11.38% | |
| Vanguard Portfolio Management Llc | 0.00% | 1,195,109 | $3,991,664 | $3,537,523 | -$454,141 | -11.38% | |
| Siren, L.L.C. | 0.10% | 1,064,250 | $3,554,595 | $3,150,180 | -$404,415 | -11.38% | |
| Marshall Wace, Llp | 0.00% | 688,203 | $2,298,597 | $2,037,081 | -$261,516 | -11.38% | |
| Blackrock, Inc. | 0.00% | 545,662 | $1,822,511 | $1,615,160 | -$207,351 | -11.38% | |
| Geode Capital Management, Llc | 0.00% | 348,395 | $1,164,522 | $1,031,249 | -$133,273 | -11.44% | |
| Morgan Stanley | 0.00% | 295,821 | $988,042 | $875,630 | -$112,412 | -11.38% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 285,646 | $954,058 | $845,512 | -$108,546 | -11.38% |
| Man Group Plc | 0.00% | 278,980 | $931,793 | $825,781 | -$106,012 | -11.38% | |
| Raymond James Financial Inc | 0.00% | 239,554 | $800,110 | $709,080 | -$91,030 | -11.38% | |
| Ubs Group Ag | 0.00% | 234,439 | $783,026 | $693,939 | -$89,087 | -11.38% | |
| Vanguard Fiduciary Trust Co | 0.00% | 200,498 | $669,663 | $593,474 | -$76,189 | -11.38% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | 198,502 | $662,997 | $587,566 | -$75,431 | -11.38% | |
| Two Sigma Investments, Lp | 0.00% | 170,922 | $570,879 | $505,929 | -$64,950 | -11.38% | |
| Panagora Asset Management Inc | 0.00% | 163,148 | $544,914 | $482,918 | -$61,996 | -11.38% | |
| Jump Financial, Llc | 0.01% | 157,200 | $525,048 | $465,312 | -$59,736 | -11.38% | |
| State Street Corp | 0.00% | 156,183 | $521,651 | $462,302 | -$59,349 | -11.38% | |
| Walleye Capital Llc | 0.00% | 120,565 | $402,687 | $356,872 | -$45,815 | -11.38% | |
| Bank Of America Corp | 0.00% | 118,782 | $396,732 | $351,595 | -$45,137 | -11.38% | |
| 683 Capital Management, Llc | 0.04% | 114,336 | $381,882 | $338,435 | -$43,447 | -11.38% | |
| Northern Trust Corp | 0.00% | 89,720 | $299,665 | $265,571 | -$34,094 | -11.38% | |
| Barclays Plc | 0.00% | 59,345 | $198,212 | $175,661 | -$22,551 | -11.38% | |
| Susquehanna International Group, Llp | 0.00% | 57,659 | $192,581 | $170,671 | -$21,910 | -11.38% | |
| Citadel Advisors Llc | 0.00% | 52,004 | $173,693 | $153,932 | -$19,761 | -11.38% | |
| Canada Pension Plan Investment Board | 0.00% | 51,800 | $173,012 | $153,328 | -$19,684 | -11.38% | |
| Millennium Management Llc | 0.00% | 43,409 | $144,986 | $128,491 | -$16,495 | -11.38% | |
| Avestar Capital, Llc | 0.01% | 41,000 | $136,940 | $121,360 | -$15,580 | -11.38% | |
| Omers Administration Corp | 0.00% | 34,700 | $115,898 | $102,712 | -$13,186 | -11.38% | |
| Engineers Gate Manager Lp | 0.00% | 34,270 | $114,462 | $101,439 | -$13,023 | -11.38% | |
| Hudson Bay Capital Management Lp | 0.00% | 33,543 | $112,034 | $99,287 | -$12,747 | -11.38% | |
| D. E. Shaw & Co., Inc. | 0.00% | 33,269 | $111,118 | $98,476 | -$12,642 | -11.38% | |
| Goldman Sachs Group Inc | 0.00% | 31,454 | $105,056 | $93,104 | -$11,952 | -11.38% | |
| Graham Capital Management, L.P. | 0.00% | 29,910 | $99,899 | $88,534 | -$11,365 | -11.38% | |
| Captrust Financial Advisors | 0.00% | 29,878 | $99,793 | $88,439 | -$11,354 | -11.38% | |
| Axq Capital, Lp | 0.01% | 29,055 | $97,044 | $86,003 | -$11,041 | -11.38% | |
| Key Client Fiduciary Advisors, Llc | 0.03% | 25,266 | $84,388 | $74,787 | -$9,601 | -11.38% | |
| Lpl Financial Llc | 0.00% | 23,720 | $79,225 | $70,211 | -$9,014 | -11.38% | |
| Osaic Holdings, Inc. | 0.00% | 20,014 | $66,846 | $59,241 | -$7,605 | -11.38% | |
| Vanguard Personalized Indexing Management, Llc | 0.00% | 18,372 | $61,362 | $54,381 | -$6,981 | -11.38% | |
| Two Sigma Securities, Llc | 0.01% | 17,744 | $59,265 | $52,522 | -$6,743 | -11.38% | |
| Vanguard Global Advisers, Llc | 0.00% | 15,906 | $53,126 | $47,082 | -$6,044 | -11.38% | |
| Bank Of Montreal | 0.00% | 15,515 | $51,820 | $45,924 | -$5,896 | -11.38% | |
| Hsbc Holdings Plc | 0.00% | 14,888 | $50,173 | $44,068 | -$6,105 | -12.17% | |
| Charles Schwab Investment Management Inc | 0.00% | 15,000 | $50,100 | $44,400 | -$5,700 | -11.38% | |
| Prelude Capital Management, Llc | 0.00% | 14,900 | $49,766 | $44,104 | -$5,662 | -11.38% | |
| Redwood Family Wealth Llc | 0.05% | 14,140 | $47,228 | $41,854 | -$5,374 | -11.38% | |
| Post Resch Tallon Group Inc. | 0.04% | 12,750 | $43,744 | $37,740 | -$6,004 | -13.73% | |
| Prudential Financial Inc | 0.00% | 12,480 | $41,683 | $36,941 | -$4,742 | -11.38% | |
| Squarepoint Ops Llc | 0.00% | 12,373 | $41,326 | $36,624 | -$4,702 | -11.38% | |
| Values First Advisors, Inc. | 0.02% | 11,191 | $37,377 | $33,125 | -$4,252 | -11.38% |
Frequently asked questions about AGEN
Who owns the most AGEN stock?
The largest holders of AGEN 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 AGENUS INC (AGEN).
Is AGEN widely held by superinvestors?
Many widely followed stocks like AGEN appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly AGEN 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.