Who owns BNTC (BNTC)
Which tracked institutional funds hold BNTC, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See BNTC 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.
How the tape is positioned
10 tracked funds added or opened BNTC while 24 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
BNTC’s largest tracked holder by dollar value, SUVRETTA CAPITAL MANAGEMENT, LLC, sizes it at 3.3% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 3.3pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in BNTC 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 88 tracked filers holding BNTC, 60 increased or opened the position and 22 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 BNTC 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 4
- VANGUARD CAPITAL MANAGEMENT LLC$10M
- VANGUARD FIDUCIARY TRUST CO$2M
- VANGUARD PORTFOLIO MANAGEMENT LLC$1M
- Atom Investors LP$559K
Full exits 3
- VANGUARD GROUP INC$16M
- Siren, L.L.C.$10M
- Woodline Partners LP$1M
Largest adds
- Simplify Asset Management Inc.$4M
- CITADEL ADVISORS LLC$2M
- Nantahala Capital Management, LLC$1M
- Russell Investments Group, Ltd.$1M
- STATE STREET CORP$302K
- MARSHALL WACE, LLP$284K
Largest trims
- SUVRETTA CAPITAL MANAGEMENT, LLC$33M
- JANUS HENDERSON GROUP PLC$9M
- ADAGE CAPITAL PARTNERS GP, L.L.C.$6M
- RA CAPITAL MANAGEMENT, L.P.$5M
- FRANKLIN RESOURCES INC$4M
- Longaeva Partners L.P.$3M
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 |
|---|---|---|---|---|
| SUVRETTA CAPITAL MANAGEMENT, LLC | 11,548,351 | $123M | 32.8% | 2026-Q1 |
| JANUS HENDERSON GROUP PLC trimmed | 2,876,380 | $31M | 8.2% | 2026-Q1 |
| FRANKLIN RESOURCES INC added | 2,378,159 | $25M | 6.7% | 2026-Q1 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 2,120,672 | $23M | 6.0% | 2026-Q1 |
| RA CAPITAL MANAGEMENT, L.P. | 1,850,000 | $20M | 5.2% | 2026-Q1 |
| Nantahala Capital Management, LLC added | 1,438,371 | $15M | 4.1% | 2026-Q1 |
| BlackRock, Inc. added | 1,185,741 | $13M | 3.4% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 931,556 | $10M | 2.6% | 2026-Q1 |
| INFINITUM ASSET MANAGEMENT, LLC added | 923,006 | $10M | 2.6% | 2026-Q1 |
| Alyeska Investment Group, L.P. | 750,000 | $8M | 2.1% | 2026-Q1 |
| SILVERARC CAPITAL MANAGEMENT, LLC trimmed | 717,725 | $8M | 2.0% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. added | 653,835 | $7M | 1.9% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 652,064 | $7M | 1.8% | 2026-Q1 |
| Simplify Asset Management Inc. added | 562,242 | $6M | 1.6% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 524,104 | $6M | 1.5% | 2026-Q1 |
| STATE STREET CORP added | 338,249 | $4M | 1.0% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC added | 318,346 | $3M | 0.9% | 2026-Q1 |
| MYDA Advisors LLC | 225,000 | $2M | 0.6% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 215,476 | $2M | 0.6% | 2026-Q1 |
| AWM Investment Company, Inc. trimmed | 187,977 | $2M | 0.5% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 171,753 | $2M | 0.5% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 171,722 | $2M | 0.5% | 2026-Q1 |
| NORTHERN TRUST CORP added | 157,324 | $2M | 0.4% | 2026-Q1 |
| Schonfeld Strategic Advisors LLC trimmed | 153,179 | $2M | 0.4% | 2026-Q1 |
| Burkehill Global Management, LP | 150,000 | $2M | 0.4% | 2026-Q1 |
| Longaeva Partners L.P. trimmed | 125,000 | $1M | 0.4% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 116,190 | $1M | 0.3% | 2026-Q1 |
| UBS Group AG added | 115,819 | $1M | 0.3% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 114,746 | $1M | 0.3% | 2026-Q1 |
| MARSHALL WACE, LLP added | 71,832 | $765K | 0.2% | 2026-Q1 |
| Lion Point Capital, LP | 62,000 | $660K | 0.2% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 61,411 | $654K | 0.2% | 2026-Q1 |
| Atom Investors LP new | 52,463 | $559K | 0.1% | 2026-Q1 |
| CANTOR FITZGERALD, L. P. new | 46,659 | $497K | 0.1% | 2026-Q1 |
| Bank of New York Mellon Corp added | 43,489 | $463K | 0.1% | 2026-Q1 |
| Nuveen, LLC added | 41,814 | $445K | 0.1% | 2026-Q1 |
| Empery Asset Management, LP trimmed | 30,440 | $324K | 0.1% | 2026-Q1 |
| MORGAN STANLEY trimmed | 29,270 | $312K | 0.1% | 2026-Q1 |
| EntryPoint Capital, LLC new | 24,322 | $259K | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 20,445 | $218K | 0.1% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 20,102 | $214K | 0.1% | 2026-Q1 |
| Persistent Asset Partners Ltd trimmed | 18,307 | $195K | 0.1% | 2026-Q1 |
| Quadrature Capital Ltd trimmed | 18,085 | $193K | 0.1% | 2026-Q1 |
| ADAR1 Capital Management, LLC new | 17,500 | $186K | 0.0% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 17,376 | $185K | 0.0% | 2026-Q1 |
| CANADA PENSION PLAN INVESTMENT BOARD new | 17,200 | $183K | 0.0% | 2026-Q1 |
| Brevan Howard Capital Management LP new | 16,610 | $177K | 0.0% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 11,908 | $127K | 0.0% | 2026-Q1 |
| Creative Planning new | 11,586 | $123K | 0.0% | 2026-Q1 |
| MetLife Investment Management, LLC | 9,397 | $100K | 0.0% | 2026-Q1 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 9,083 | $97K | 0.0% | 2026-Q1 |
| Vanguard Global Advisers, LLC new | 8,660 | $92K | 0.0% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 7,885 | $79K | 0.0% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN trimmed | 7,045 | $75K | 0.0% | 2026-Q1 |
| Police & Firemen's Retirement System of New Jersey added | 6,806 | $72K | 0.0% | 2026-Q1 |
| GAMMA Investing LLC trimmed | 6,705 | $71K | 0.0% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 6,348 | $68K | 0.0% | 2026-Q1 |
| QUADRANT CAPITAL GROUP LLC | 173 | $49K | 0.0% | 2026-Q1 |
| NEW YORK STATE COMMON RETIREMENT FUND | 4,327 | $46K | 0.0% | 2026-Q1 |
| BARCLAYS PLC trimmed | 3,835 | $41K | 0.0% | 2026-Q1 |
| Truvestments Capital LLC | 3,834 | $41K | 0.0% | 2026-Q1 |
| Tower Research Capital LLC (TRC) added | 3,056 | $33K | 0.0% | 2026-Q1 |
| Legal & General Group Plc added | 1,746 | $19K | 0.0% | 2026-Q1 |
| FMR LLC added | 1,654 | $18K | 0.0% | 2026-Q1 |
| Ameritas Investment Partners, Inc. | 1,477 | $16K | 0.0% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 1,066 | $11K | 0.0% | 2026-Q1 |
| CITIGROUP INC added | 874 | $9K | 0.0% | 2026-Q1 |
| Rockefeller Capital Management L.P. new | 582 | $6K | 0.0% | 2026-Q1 |
| EverSource Wealth Advisors, LLC added | 204 | $5K | 0.0% | 2026-Q1 |
| US BANCORP \DE\ added | 482 | $5K | 0.0% | 2026-Q1 |
| JONES FINANCIAL COMPANIES LLLP new | 397 | $4K | 0.0% | 2026-Q1 |
| ROYAL BANK OF CANADA trimmed | 357 | $4K | 0.0% | 2026-Q1 |
| PNC FINANCIAL SERVICES GROUP, INC. added | 196 | $2K | 0.0% | 2026-Q1 |
| Allworth Financial LP new | 187 | $2K | 0.0% | 2026-Q1 |
| SIGNATUREFD, LLC new | 170 | $2K | 0.0% | 2026-Q1 |
| Sterling Capital Management LLC added | 126 | $1K | 0.0% | 2026-Q1 |
| FIFTH THIRD BANCORP new | 106 | $1K | 0.0% | 2026-Q1 |
| GROUP ONE TRADING LLC | 89 | $948 | 0.0% | 2026-Q1 |
| CWM, LLC added | 68 | $724 | 0.0% | 2026-Q1 |
| Caitong International Asset Management Co., Ltd new | 8 | $85 | 0.0% | 2026-Q1 |
| MAI Capital Management new | 5 | $54 | 0.0% | 2026-Q1 |
| Sunbelt Securities, Inc. new | 4 | $43 | 0.0% | 2026-Q1 |
| ROTHSCHILD INVESTMENT LLC new | 2 | $21 | 0.0% | 2026-Q1 |
| VANGUARD GROUP INC added | 1,174,758 | $16M | 4.2% | 2025-Q4 stale |
| Siren, L.L.C. new | 775,000 | $10M | 2.8% | 2025-Q4 stale |
| Woodline Partners LP new | 100,704 | $1M | 0.4% | 2025-Q4 stale |
| ExodusPoint Capital Management, LP added | 77,912 | $1M | 0.3% | 2025-Q3 stale |
| Informed Momentum Co LLC trimmed | 37,809 | $442K | 0.1% | 2025-Q2 stale |
| Qube Research & Technologies Ltd trimmed | 19,003 | $247K | 0.1% | 2025-Q1 stale |
| Squarepoint Ops LLC new | 15,045 | $203K | 0.1% | 2025-Q4 stale |
| HRT FINANCIAL LP trimmed | 13,288 | $178K | 0.0% | 2025-Q4 stale |
| JANE STREET GROUP, LLC new | 12,425 | $167K | 0.0% | 2025-Q4 stale |
| Anson Funds Management LP new | 11,710 | $137K | 0.0% | 2025-Q2 stale |
| XTX Topco Ltd new | 10,845 | $127K | 0.0% | 2025-Q2 stale |
| SG Americas Securities, LLC trimmed | 8,232 | $111K | 0.0% | 2025-Q4 stale |
| ACADIAN ASSET MANAGEMENT LLC | 1,817 | $21K | 0.0% | 2025-Q2 stale |
| AMALGAMATED BANK trimmed | 467 | $6K | 0.0% | 2025-Q4 stale |
| SIMPLEX TRADING, LLC trimmed | 72 | $1K | 0.0% | 2025-Q3 stale |
| Parallel Advisors, LLC new | 55 | $741 | 0.0% | 2025-Q4 stale |
| Arax Advisory Partners new | 24 | $337 | 0.0% | 2025-Q3 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.