Who owns Abeona Therapeutics (ABEO)
Which tracked institutional funds hold ABEO, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ABEO company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-18). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
14 tracked funds added or opened ABEO while 30 trimmed or exited it between 2025-Q4 and 2026-Q1 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
ABEO’s largest tracked holder by dollar value, Nantahala Capital Management, LLC, sizes it at 1.4% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 1.4pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in ABEO divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 107 tracked filers holding ABEO, 57 increased or opened the position and 47 reduced or closed it; over the same quarter, open-market insider Form 4 buying and selling roughly offset.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in ABEO between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 6
- VANGUARD CAPITAL MANAGEMENT LLC$10M
- NATIONAL BANK OF CANADA /FI/$2M
- VANGUARD FIDUCIARY TRUST CO$2M
- VANGUARD PORTFOLIO MANAGEMENT LLC$1M
- MARSHALL WACE, LLP$969K
- ExodusPoint Capital Management, LP$551K
Full exits 4
- VANGUARD GROUP INC$15M
- Vivo Capital, LLC$10M
- Aberdeen Group plc$3M
- Jain Global LLC$2M
Largest adds
- AIGH Capital Management LLC$3M
- GOLDMAN SACHS GROUP INC$2M
- Propel Bio Management, LLC$2M
- JPMORGAN CHASE & CO$1M
- Knoll Capital Management, LLC$932K
- J. Goldman & Co LP$767K
Largest trims
- Nantahala Capital Management, LLC$4M
- TANG CAPITAL MANAGEMENT LLC$3M
- BlackRock, Inc.$2M
- MONTANOVA CAPITAL, LLC$2M
- SUSQUEHANNA INTERNATIONAL GROUP, LLP$2M
- MORGAN STANLEY$984K
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| Nantahala Capital Management, LLC added | 5,013,052 | $22M | 8.8% | 2026-Q1 |
| BlackRock, Inc. added | 3,352,474 | $21M | 8.1% | 2026-Q2 |
| AIGH Capital Management LLC added | 3,100,000 | $14M | 5.4% | 2026-Q1 |
| Cable Car Capital, LP added | 3,007,329 | $13M | 5.3% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 2,164,851 | $10M | 3.8% | 2026-Q1 |
| STATE STREET CORP added | 1,040,228 | $6M | 2.5% | 2026-Q2 |
| Propel Bio Management, LLC added | 1,329,899 | $6M | 2.4% | 2026-Q1 |
| KENNEDY CAPITAL MANAGEMENT LLC added | 1,263,511 | $6M | 2.2% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,209,797 | $5M | 2.1% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 1,130,619 | $5M | 2.0% | 2026-Q1 |
| NAN FUNG TRINITY (HK) LTD | 956,770 | $4M | 1.7% | 2026-Q1 |
| AWM Investment Company, Inc. added | 803,130 | $4M | 1.4% | 2026-Q1 |
| 683 Capital Management, LLC | 770,000 | $3M | 1.4% | 2026-Q1 |
| Stonepine Capital Management, LLC added | 746,587 | $3M | 1.3% | 2026-Q1 |
| MONTANOVA CAPITAL, LLC trimmed | 500,000 | $3M | 1.2% | 2026-Q2 |
| SILVERARC CAPITAL MANAGEMENT, LLC added | 648,942 | $3M | 1.1% | 2026-Q1 |
| J. Goldman & Co LP added | 640,530 | $3M | 1.1% | 2026-Q1 |
| Diametric Capital, LP trimmed | 611,520 | $3M | 1.1% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. trimmed | 589,847 | $3M | 1.0% | 2026-Q1 |
| CITIGROUP INC added | 522,445 | $2M | 0.9% | 2026-Q1 |
| Simplify Asset Management Inc. added | 507,988 | $2M | 0.9% | 2026-Q1 |
| NATIONAL BANK OF CANADA /FI/ new | 500,000 | $2M | 0.9% | 2026-Q1 |
| TUDOR INVESTMENT CORP ET AL new | 360,800 | $2M | 0.9% | 2026-Q2 |
| Knoll Capital Management, LLC added | 485,515 | $2M | 0.9% | 2026-Q1 |
| NORTHERN TRUST CORP added | 435,973 | $2M | 0.8% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 432,370 | $2M | 0.8% | 2026-Q1 |
| TANG CAPITAL MANAGEMENT LLC trimmed | 400,000 | $2M | 0.7% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 394,274 | $2M | 0.7% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 339,515 | $2M | 0.6% | 2026-Q1 |
| MORGAN STANLEY trimmed | 337,562 | $2M | 0.6% | 2026-Q1 |
| ExodusPoint Capital Management, LP added | 212,325 | $1M | 0.5% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 211,335 | $1M | 0.5% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 270,976 | $1M | 0.5% | 2026-Q1 |
| MARSHALL WACE, LLP trimmed | 194,827 | $1M | 0.5% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 266,497 | $1M | 0.4% | 2026-Q1 |
| UBS Group AG added | 233,924 | $1M | 0.4% | 2026-Q1 |
| GROUP ONE TRADING LLC trimmed | 209,607 | $939K | 0.4% | 2026-Q1 |
| PANAGORA ASSET MANAGEMENT INC added | 199,145 | $892K | 0.3% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 193,632 | $867K | 0.3% | 2026-Q1 |
| FMR LLC trimmed | 138,497 | $856K | 0.3% | 2026-Q2 |
| SEI INVESTMENTS CO added | 172,460 | $773K | 0.3% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC added | 161,082 | $722K | 0.3% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 127,109 | $569K | 0.2% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP new | 80,737 | $499K | 0.2% | 2026-Q2 |
| Palo Alto Investors LP | 108,865 | $488K | 0.2% | 2026-Q1 |
| PRELUDE CAPITAL MANAGEMENT, LLC trimmed | 93,073 | $417K | 0.2% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 67,063 | $414K | 0.2% | 2026-Q2 |
| D. E. Shaw & Co., Inc. trimmed | 57,100 | $353K | 0.1% | 2026-Q2 |
| Pale Fire Capital SE trimmed | 69,845 | $313K | 0.1% | 2026-Q1 |
| XTX Topco Ltd added | 69,120 | $310K | 0.1% | 2026-Q1 |
| LPL Financial LLC added | 65,148 | $292K | 0.1% | 2026-Q1 |
| Headlands Technologies LLC new | 63,345 | $284K | 0.1% | 2026-Q1 |
| Rangeley Capital, LLC added | 60,000 | $269K | 0.1% | 2026-Q1 |
| Nuveen, LLC | 56,719 | $254K | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 55,847 | $250K | 0.1% | 2026-Q1 |
| CITADEL ADVISORS LLC trimmed | 55,837 | $250K | 0.1% | 2026-Q1 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC new | 50,000 | $224K | 0.1% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 32,591 | $202K | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 44,927 | $201K | 0.1% | 2026-Q1 |
| HARBOR CAPITAL ADVISORS, INC. new | 35,094 | $157K | 0.1% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP new | 34,371 | $154K | 0.1% | 2026-Q1 |
| LOS ANGELES CAPITAL MANAGEMENT LLC trimmed | 33,561 | $150K | 0.1% | 2026-Q1 |
| Invesco Ltd. added | 23,724 | $147K | 0.1% | 2026-Q2 |
| SIMPLEX TRADING, LLC trimmed | 31,096 | $139K | 0.1% | 2026-Q1 |
| Brevan Howard Capital Management LP added | 29,263 | $131K | 0.1% | 2026-Q1 |
| BARCLAYS PLC trimmed | 27,248 | $122K | 0.0% | 2026-Q1 |
| MetLife Investment Management, LLC trimmed | 23,772 | $106K | 0.0% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. | 17,920 | $94K | 0.0% | 2026-Q1 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. trimmed | 3,047,985 | $16M | 6.3% | 2025-Q3 stale |
| VANGUARD GROUP INC added | 2,757,143 | $15M | 5.7% | 2025-Q4 stale |
| Vivo Capital, LLC | 1,842,751 | $10M | 3.8% | 2025-Q4 stale |
| Rosalind Advisors, Inc. added | 1,805,817 | $9M | 3.4% | 2025-Q1 stale |
| Western Standard LLC trimmed | 1,249,957 | $7M | 2.6% | 2025-Q3 stale |
| Aberdeen Group plc added | 616,413 | $3M | 1.3% | 2025-Q4 stale |
| BOONE CAPITAL MANAGEMENT LLC trimmed | 502,854 | $3M | 1.0% | 2025-Q3 stale |
| Ikarian Capital, LLC | 533,581 | $3M | 1.0% | 2025-Q1 stale |
| Jain Global LLC added | 366,067 | $2M | 0.8% | 2025-Q4 stale |
| Laurion Capital Management LP trimmed | 275,915 | $2M | 0.6% | 2025-Q2 stale |
| Newtyn Management, LLC trimmed | 248,656 | $1M | 0.5% | 2025-Q3 stale |
| Qube Research & Technologies Ltd added | 225,868 | $1M | 0.5% | 2025-Q3 stale |
| Trexquant Investment LP added | 177,754 | $939K | 0.4% | 2025-Q3 stale |
| Walleye Capital LLC trimmed | 183,306 | $873K | 0.3% | 2025-Q1 stale |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 150,929 | $797K | 0.3% | 2025-Q3 stale |
| Y-Intercept (Hong Kong) Ltd new | 102,336 | $581K | 0.2% | 2025-Q2 stale |
| HRT FINANCIAL LP new | 96,655 | $460K | 0.2% | 2025-Q1 stale |
| Jump Financial, LLC new | 75,940 | $400K | 0.2% | 2025-Q4 stale |
| JANE STREET GROUP, LLC trimmed | 68,614 | $390K | 0.2% | 2025-Q2 stale |
| Connective Capital Management, LLC | 74,913 | $357K | 0.1% | 2025-Q1 stale |
| Schonfeld Strategic Advisors LLC added | 65,011 | $309K | 0.1% | 2025-Q1 stale |
| GSA CAPITAL PARTNERS LLP trimmed | 63,835 | $304K | 0.1% | 2025-Q1 stale |
| Bollard Group LLC new | 49,393 | $281K | 0.1% | 2025-Q2 stale |
| DEERFIELD MANAGEMENT COMPANY, L.P. new | 40,000 | $211K | 0.1% | 2025-Q4 stale |
| PRUDENTIAL FINANCIAL INC new | 37,311 | $197K | 0.1% | 2025-Q3 stale |
| AXQ CAPITAL, LP new | 33,581 | $177K | 0.1% | 2025-Q4 stale |
| Brooklyn Investment Group new | 25,779 | $138K | 0.1% | 2025-Q4 stale |
| LMR Partners LLP new | 27,120 | $129K | 0.1% | 2025-Q1 stale |
| Corient Private Wealth LLC | 22,416 | $127K | 0.0% | 2025-Q2 stale |
| Quantessence Capital LLC new | 26,087 | $124K | 0.0% | 2025-Q1 stale |
| Squarepoint Ops LLC trimmed | 21,316 | $113K | 0.0% | 2025-Q3 stale |
| Engineers Gate Manager LP new | 20,501 | $98K | 0.0% | 2025-Q1 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.