FORTRESS BIOTECH INC (FBIO) Top Institutional Shareholders
FORTRESS BIOTECH INC (FBIO) 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 $13.22M in FBIO holdings during the latest filing period.
Opaleye Management Inc. is currently the largest disclosed institutional shareholder of FBIO tracked by InsiderSet, reporting ownership valued at approximately $2.91M 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 $3.20M, representing an estimated gain of +10.04% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 77% of the total disclosed FBIO value among the investors covered in this analysis. Major shareholders include Opaleye Management Inc., Vanguard Capital Management Llc, Geode Capital Management, Llc, and several other long-term asset managers with concentrated positions in FORTRESS BIOTECH INC (FBIO).
This page ranks the largest institutional FBIO 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
50
Total Reported Value
$13.22M
Largest Holder
Opaleye Management Inc.
Largest Position
$2.91M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
62
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Opaleye Management Inc. | 0.38% | 1,042,000 | $2,907,180 | $3,198,940 | +$291,760 | +10.04% | |
| Vanguard Capital Management Llc | 0.00% | 966,030 | $2,695,224 | $2,965,712 | +$270,488 | +10.04% | |
| Geode Capital Management, Llc | 0.00% | 290,255 | $810,110 | $891,083 | +$80,973 | +10.00% | |
| Northern Trust Corp | 0.00% | 230,053 | $641,848 | $706,263 | +$64,415 | +10.04% | |
| Susquehanna International Group, Llp | 0.00% | 210,745 | $587,979 | $646,987 | +$59,008 | +10.04% | |
| Blackrock, Inc. | 0.00% | 197,085 | $549,867 | $605,051 | +$55,184 | +10.04% | |
| Two Sigma Investments, Lp | 0.00% | 196,825 | $549,142 | $604,253 | +$55,111 | +10.04% | |
| Bridgeway Capital Management, Llc | 0.01% | 182,368 | $508,807 | $559,870 | +$51,063 | +10.04% | |
| Citadel Advisors Llc | 0.00% | 180,289 | $503,006 | $553,487 | +$50,481 | +10.04% | |
| Vanguard Fiduciary Trust Co | 0.00% | 142,535 | $397,673 | $437,582 | +$39,909 | +10.04% | |
| Kestra Advisory Services, Llc | 0.00% | 129,801 | $362,145 | $398,489 | +$36,344 | +10.04% | |
| Hb Wealth Management, Llc | 0.00% | 120,175 | $335,288 | $368,937 | +$33,649 | +10.04% | |
| State Street Corp | 0.00% | 101,601 | $283,467 | $311,915 | +$28,448 | +10.04% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 99,590 | $277,856 | $305,741 | +$27,885 | +10.04% |
| Xtx Topco Ltd | 0.00% | 76,068 | $212,230 | $233,529 | +$21,299 | +10.04% | |
| 180 Wealth Advisors, Llc | 0.02% | 63,800 | $178,002 | $195,866 | +$17,864 | +10.04% | |
| Simplex Trading, Llc | 0.01% | 58,329 | $162,737 | $179,070 | +$16,333 | +10.04% | |
| Panagora Asset Management Inc | 0.00% | 56,668 | $158,104 | $173,971 | +$15,867 | +10.04% | |
| Sculptor Capital Lp | 0.00% | 52,000 | $145,080 | $159,640 | +$14,560 | +10.04% | |
| Integrated Wealth Concepts Llc | 0.00% | 45,200 | $126,108 | $138,764 | +$12,656 | +10.04% | |
| Jane Street Group, Llc | 0.00% | 40,934 | $114,206 | $125,667 | +$11,461 | +10.04% | |
| Pfg Investments, Llc | 0.00% | 36,501 | $101,838 | $112,058 | +$10,220 | +10.04% | |
| Choreo, Llc | 0.00% | 36,250 | $101,138 | $111,288 | +$10,150 | +10.04% | |
| Two Sigma Securities, Llc | 0.01% | 24,744 | $69,036 | $75,964 | +$6,928 | +10.04% | |
| Summit Financial, Llc | 0.00% | 20,659 | $57,639 | $63,423 | +$5,784 | +10.04% | |
| Corient Private Wealth Llc | 0.00% | 14,963 | $41,748 | $45,936 | +$4,188 | +10.03% | |
| Abacus Planning Group, Inc. | 0.01% | 14,534 | $40,550 | $44,619 | +$4,069 | +10.04% | |
| Ubs Group Ag | 0.00% | 14,473 | $40,380 | $44,432 | +$4,052 | +10.03% | |
| Prudential Financial Inc | 0.00% | 13,033 | $36,362 | $40,011 | +$3,649 | +10.04% | |
| Vanguard Global Advisers, Llc | 0.00% | 12,578 | $35,093 | $38,614 | +$3,521 | +10.03% | |
| Weaver Consulting Group | 0.01% | 11,367 | $31,715 | $34,897 | +$3,182 | +10.03% | |
| Wells Fargo & Company/Mn | 0.00% | 10,575 | $29,504 | $32,465 | +$2,961 | +10.04% | |
| Tower Research Capital Llc (Trc) | 0.00% | 10,495 | $29,281 | $32,220 | +$2,939 | +10.04% | |
| Forum Financial Management, Lp | 0.00% | 10,000 | $27,900 | $30,700 | +$2,800 | +10.04% | |
| Osaic Holdings, Inc. | 0.00% | 4,994 | $13,932 | $15,332 | +$1,400 | +10.05% | |
| Rockefeller Capital Management L.P. | 0.00% | 4,812 | $13,425 | $14,773 | +$1,348 | +10.04% | |
| Newedge Advisors, Llc | 0.00% | 12,927 | $12,927 | $39,686 | +$26,759 | +207.00% | |
| Mtm Investment Management, Llc | 0.00% | 4,249 | $11,855 | $13,044 | +$1,189 | +10.03% | |
| Morgan Stanley | 0.00% | 3,884 | $10,837 | $11,924 | +$1,087 | +10.03% | |
| Federated Hermes, Inc. | 0.00% | 1,261 | $3,518 | $3,871 | +$353 | +10.04% | |
| Royal Bank Of Canada | 0.00% | 687 | $2,000 | $2,109 | +$109 | +5.45% | |
| Shikiar Asset Management Inc | 0.25% | 305,469 | $852 | $937,790 | +$936,938 | +109969.23% | |
| Gsa Capital Partners Llp | 0.04% | 254,134 | $709 | $780,191 | +$779,482 | +109941.10% | |
| Fmr Llc | 0.00% | 220 | $614 | $675 | +$61 | +10.00% | |
| Caitong International Asset Management Co., Ltd | 0.00% | 213 | $594 | $654 | +$60 | +10.09% | |
| Steward Partners Investment Advisory, Llc | 0.00% | 100 | $279 | $307 | +$28 | +10.04% | |
| Larson Financial Group Llc | 0.00% | 67 | $187 | $206 | +$19 | +9.99% | |
| Acadian Asset Management Llc | 0.00% | 40,450 | $112 | $124,182 | +$124,070 | +110776.34% | |
| Northwestern Mutual Wealth Management Co | 0.00% | 33 | $92 | $101 | +$9 | +10.12% | |
| Bnp Paribas Financial Markets | 0.00% | 2 | $6 | $6 | +$0 | +2.33% |
Frequently asked questions about FBIO
Who owns the most FBIO stock?
The largest holders of FBIO 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 FORTRESS BIOTECH INC (FBIO).
Is FBIO widely held by superinvestors?
Many widely followed stocks like FBIO appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly FBIO 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.