Who owns Geron (GERN)
Which tracked institutional funds hold GERN, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See GERN company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 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
28 tracked funds added or opened GERN while 35 trimmed or exited it between 2026-Q1 and 2026-Q2 — 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
GERN’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes GERN more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in GERN 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 2026-Q1 and 2026-Q2, across 245 tracked filers holding GERN, 127 increased or opened the position and 102 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
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 GERN between the 2026-Q1 and 2026-Q2 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 5
- MOORE CAPITAL MANAGEMENT, LP$2M
- SummitTX Capital, L.P.$841K
- Exome Asset Management LLC$799K
- Squarepoint Ops LLC$684K
- Verdad Advisers, LP$633K
Full exits 6
- Deep Track Capital, LP$47M
- MARSHALL WACE, LLP$4M
- Vestal Point Capital, LP$4M
- JANUS HENDERSON GROUP PLC$3M
- HRT FINANCIAL LP$2M
- JANE STREET GROUP, LLC$1M
Largest adds
- VANGUARD PORTFOLIO MANAGEMENT LLC$7M
- TORONTO DOMINION BANK$5M
- CITADEL ADVISORS LLC$5M
- GOLDMAN SACHS GROUP INC$5M
- PANAGORA ASSET MANAGEMENT INC$3M
- ExodusPoint Capital Management, LP$3M
Largest trims
- RA CAPITAL MANAGEMENT, L.P.$40M
- Point72 Asset Management, L.P.$25M
- BlackRock, Inc.$8M
- Soleus Capital Management, L.P.$7M
- VANGUARD CAPITAL MANAGEMENT LLC$5M
- Eversept Partners, LP$4M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 49,115,571 | $63M | 10.5% | 2026-Q2 |
| RA CAPITAL MANAGEMENT, L.P. trimmed | 42,809,751 | $55M | 9.1% | 2026-Q2 |
| Soleus Capital Management, L.P. added | 42,808,659 | $55M | 9.1% | 2026-Q2 |
| STATE STREET CORP added | 35,856,671 | $46M | 7.6% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 29,038,928 | $37M | 6.2% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 27,250,215 | $35M | 5.8% | 2026-Q2 |
| Clearbridge Investments, LLC added | 19,648,853 | $25M | 4.2% | 2026-Q2 |
| Eversept Partners, LP trimmed | 18,717,422 | $24M | 4.0% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 16,633,368 | $21M | 3.5% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 14,555,954 | $19M | 3.1% | 2026-Q2 |
| MORGAN STANLEY added | 12,945,431 | $17M | 2.8% | 2026-Q2 |
| Nantahala Capital Management, LLC added | 12,225,000 | $16M | 2.6% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 10,812,598 | $14M | 2.3% | 2026-Q2 |
| Vivo Capital, LLC | 8,671,797 | $11M | 1.8% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 8,112,267 | $10M | 1.7% | 2026-Q2 |
| Kynam Capital Management, LP | 6,836,318 | $9M | 1.5% | 2026-Q2 |
| Candriam S.C.A. added | 5,589,182 | $7M | 1.2% | 2026-Q2 |
| FMR LLC trimmed | 5,502,807 | $7M | 1.2% | 2026-Q2 |
| Pale Fire Capital SE added | 5,307,204 | $7M | 1.1% | 2026-Q2 |
| NORTHERN TRUST CORP added | 5,032,212 | $6M | 1.1% | 2026-Q2 |
| UBS Group AG added | 4,896,096 | $6M | 1.0% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC added | 4,579,000 | $6M | 1.0% | 2026-Q2 |
| SEGALL BRYANT & HAMILL, LLC trimmed | 4,485,554 | $6M | 1.0% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 4,308,013 | $6M | 0.9% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 4,284,662 | $5M | 0.9% | 2026-Q2 |
| TORONTO DOMINION BANK added | 4,235,000 | $5M | 0.9% | 2026-Q2 |
| Point72 Asset Management, L.P. trimmed | 4,045,201 | $5M | 0.9% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 3,963,563 | $5M | 0.8% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 3,534,234 | $5M | 0.8% | 2026-Q2 |
| DEUTSCHE BANK AG\ trimmed | 3,439,976 | $4M | 0.7% | 2026-Q2 |
| Qube Research & Technologies Ltd added | 3,361,584 | $4M | 0.7% | 2026-Q2 |
| PANAGORA ASSET MANAGEMENT INC added | 2,939,469 | $4M | 0.6% | 2026-Q2 |
| ExodusPoint Capital Management, LP added | 2,526,145 | $3M | 0.5% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 2,416,441 | $3M | 0.5% | 2026-Q2 |
| EDMOND DE ROTHSCHILD HOLDING S.A. | 2,330,000 | $3M | 0.5% | 2026-Q2 |
| NAN FUNG TRINITY (HK) LTD added | 2,223,550 | $3M | 0.5% | 2026-Q2 |
| Bank of New York Mellon Corp added | 1,618,246 | $2M | 0.3% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 1,547,239 | $2M | 0.3% | 2026-Q2 |
| Nuveen, LLC trimmed | 1,546,476 | $2M | 0.3% | 2026-Q2 |
| MOORE CAPITAL MANAGEMENT, LP new | 1,191,941 | $2M | 0.3% | 2026-Q2 |
| Invesco Ltd. trimmed | 1,175,208 | $2M | 0.3% | 2026-Q2 |
| Seven Fleet Capital Management LP added | 1,057,228 | $1M | 0.2% | 2026-Q2 |
| World Investment Advisors | 1,033,779 | $2M | 0.3% | 2026-Q2 |
| Virtus Investment Advisers, LLC added | 1,011,201 | $1M | 0.2% | 2026-Q2 |
| Voleon Capital Management LP added | 1,004,988 | $1M | 0.2% | 2026-Q2 |
| Hennion & Walsh Asset Management, Inc. added | 1,000,910 | $1M | 0.2% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 983,698 | $1M | 0.2% | 2026-Q2 |
| Swiss National Bank added | 964,000 | $1M | 0.2% | 2026-Q2 |
| CITIGROUP INC added | 826,216 | $1M | 0.2% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 732,065 | $937K | 0.2% | 2026-Q2 |
| J. Goldman & Co LP added | 712,124 | $912K | 0.2% | 2026-Q2 |
| Man Group plc added | 696,669 | $892K | 0.1% | 2026-Q2 |
| SummitTX Capital, L.P. added | 657,024 | $841K | 0.1% | 2026-Q2 |
| ALPS ADVISORS INC added | 651,079 | $833K | 0.1% | 2026-Q2 |
| Exome Asset Management LLC trimmed | 624,046 | $799K | 0.1% | 2026-Q2 |
| FRANKLIN RESOURCES INC added | 618,891 | $792K | 0.1% | 2026-Q2 |
| Rafferty Asset Management, LLC trimmed | 606,440 | $776K | 0.1% | 2026-Q2 |
| Arax Advisory Partners added | 605,298 | $775K | 0.1% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 578,321 | $740K | 0.1% | 2026-Q2 |
| Lion Point Capital, LP | 578,000 | $740K | 0.1% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 571,821 | $852K | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 558,500 | $715K | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 542,133 | $694K | 0.1% | 2026-Q2 |
| Squarepoint Ops LLC trimmed | 534,461 | $684K | 0.1% | 2026-Q2 |
| Inspire Investing, LLC added | 525,963 | $673K | 0.1% | 2026-Q2 |
| Quadrature Capital Ltd added | 524,064 | $671K | 0.1% | 2026-Q2 |
| Nvest Financial, LLC added | 517,150 | $662K | 0.1% | 2026-Q2 |
| ADAR1 Capital Management, LLC added | 505,817 | $647K | 0.1% | 2026-Q2 |
| Private Advisor Group, LLC added | 502,878 | $644K | 0.1% | 2026-Q2 |
| Verdad Advisers, LP new | 494,201 | $633K | 0.1% | 2026-Q2 |
| XTX Topco Ltd trimmed | 463,897 | $594K | 0.1% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 459,584 | $589K | 0.1% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC added | 340,638 | $436K | 0.1% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 328,089 | $421K | 0.1% | 2026-Q2 |
| MetLife Investment Management, LLC added | 327,983 | $420K | 0.1% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd | 313,117 | $401K | 0.1% | 2026-Q2 |
| Legal & General Group Plc added | 309,547 | $396K | 0.1% | 2026-Q2 |
| PROFUND ADVISORS LLC trimmed | 306,586 | $392K | 0.1% | 2026-Q2 |
| MOODY NATIONAL BANK TRUST DIVISION added | 297,204 | $380K | 0.1% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 289,524 | $376K | 0.1% | 2026-Q2 |
| MML INVESTORS SERVICES, LLC trimmed | 247,906 | $317K | 0.1% | 2026-Q2 |
| Jupiter Topco LLC new | 239,357 | $305K | 0.1% | 2026-Q2 |
| Mitsubishi UFJ Trust & Banking Corp new | 225,592 | $289K | 0.0% | 2026-Q2 |
| Vanguard Global Advisers, LLC | 219,833 | $281K | 0.0% | 2026-Q2 |
| DIVERSIFIED TRUST CO new | 218,530 | $280K | 0.0% | 2026-Q2 |
| ALLSTATE CORP new | 210,185 | $269K | 0.0% | 2026-Q2 |
| STATE OF WISCONSIN INVESTMENT BOARD added | 209,593 | $268K | 0.0% | 2026-Q2 |
| Mason & Associates Inc added | 200,312 | $256K | 0.0% | 2026-Q2 |
| Cresset Asset Management, LLC added | 199,707 | $256K | 0.0% | 2026-Q2 |
| ProShare Advisors LLC added | 188,592 | $241K | 0.0% | 2026-Q2 |
| LPL Financial LLC added | 182,417 | $233K | 0.0% | 2026-Q2 |
| Verition Fund Management LLC added | 173,689 | $222K | 0.0% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND | 171,453 | $219K | 0.0% | 2026-Q2 |
| Creative Planning trimmed | 166,015 | $212K | 0.0% | 2026-Q2 |
| Headlands Technologies LLC added | 159,533 | $204K | 0.0% | 2026-Q2 |
| State of New Jersey Common Pension Fund D trimmed | 155,336 | $199K | 0.0% | 2026-Q2 |
| LOS ANGELES CAPITAL MANAGEMENT LLC trimmed | 154,450 | $198K | 0.0% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 153,940 | $197K | 0.0% | 2026-Q2 |
| Police & Firemen's Retirement System of New Jersey | 153,371 | $196K | 0.0% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE added | 148,907 | $191K | 0.0% | 2026-Q2 |
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.