Who owns AGMB
Which tracked institutional funds hold AGMB, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See AGMB company fundamentals →
Ownership as of the 2026-Q1 13F filings. 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
Conviction spread
AGMB’s largest tracked holder by dollar value, EQT Fund Management S.a r.l., sizes it at 5.3% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 5.3pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in AGMB 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
Only one quarter (2026-Q1) of 13F history is available — a quarter-over-quarter accumulation delta needs two.
We do not publish a positioning read for a window we cannot measure honestly. A starting question, not a verdict.
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.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| EQT Fund Management S.a r.l. new | 5,141,992 | $54M | 22.6% | 2026-Q1 |
| Sanofi new | 2,783,096 | $29M | 12.3% | 2026-Q1 |
| Cormorant Asset Management, LP new | 2,465,348 | $26M | 10.9% | 2026-Q1 |
| TCG Crossover Management, LLC new | 2,053,233 | $22M | 9.0% | 2026-Q1 |
| FEDERATED HERMES, INC. new | 1,618,000 | $17M | 7.1% | 2026-Q1 |
| Casdin Capital, LLC new | 1,550,000 | $16M | 6.8% | 2026-Q1 |
| ANDERA PARTNERS new | 1,538,702 | $16M | 6.8% | 2026-Q1 |
| Nantahala Capital Management, LLC new | 1,200,000 | $13M | 5.4% | 2026-Q1 |
| FMR LLC new | 788,451 | $8M | 3.5% | 2026-Q1 |
| Aberdeen Group plc new | 707,656 | $7M | 3.1% | 2026-Q1 |
| PERCEPTIVE ADVISORS LLC new | 600,000 | $6M | 2.6% | 2026-Q1 |
| SAMSARA BIOCAPITAL, LLC new | 600,000 | $6M | 2.6% | 2026-Q1 |
| Siren, L.L.C. new | 411,250 | $4M | 1.8% | 2026-Q1 |
| LMR Partners LLP new | 300,000 | $3M | 1.3% | 2026-Q1 |
| SEVEN GRAND MANAGERS, LLC new | 200,000 | $2M | 0.9% | 2026-Q1 |
| Redmile Group, LLC new | 156,250 | $2M | 0.7% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC new | 95,233 | $999K | 0.4% | 2026-Q1 |
| Pfizer Inc new | 75,000 | $814K | 0.3% | 2026-Q1 |
| Alyeska Investment Group, L.P. new | 75,000 | $787K | 0.3% | 2026-Q1 |
| Laurion Capital Management LP new | 50,000 | $524K | 0.2% | 2026-Q1 |
| Bellevue Group AG new | 50,000 | $524K | 0.2% | 2026-Q1 |
| SECTORAL ASSET MANAGEMENT INC new | 43,500 | $477K | 0.2% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC new | 35,739 | $375K | 0.2% | 2026-Q1 |
| Burkehill Global Management, LP new | 35,000 | $367K | 0.2% | 2026-Q1 |
| CITADEL ADVISORS LLC new | 35,000 | $367K | 0.2% | 2026-Q1 |
| HRT FINANCIAL LP new | 23,726 | $248K | 0.1% | 2026-Q1 |
| D. E. Shaw & Co., Inc. new | 15,326 | $161K | 0.1% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP new | 14,241 | $149K | 0.1% | 2026-Q1 |
| JANE STREET GROUP, LLC new | 12,794 | $134K | 0.1% | 2026-Q1 |
| UBS Group AG new | 6,437 | $68K | 0.0% | 2026-Q1 |
| MORGAN STANLEY new | 3,025 | $32K | 0.0% | 2026-Q1 |
| SBI Securities Co., Ltd. new | 2 | $21 | 0.0% | 2026-Q1 |
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.