Who owns AN2 Therapeutics (ANTX)
Which tracked institutional funds hold ANTX, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ANTX 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
The tracked-fund tape on ANTX is one-sided between 2026-Q1 and 2026-Q2: 21 added or opened and 7 trimmed or exited — on balance accumulating.
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
ANTX’s largest tracked holder by dollar value, Vivo Capital, 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 ANTX 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 66 tracked filers holding ANTX, 43 increased or opened the position and 28 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
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 ANTX 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 3
- SummitTX Capital, L.P.$3M
- BALYASNY ASSET MANAGEMENT L.P.$3M
- VANGUARD PORTFOLIO MANAGEMENT LLC$869K
Full exits 4
- BANK OF NOVA SCOTIA$2M
- JANE STREET GROUP, LLC$1M
- BANK OF MONTREAL /CAN/$890K
- CANTOR FITZGERALD, L. P.$684K
Largest adds
- BlackRock, Inc.$7M
- Commodore Capital LP$6M
- Vivo Capital, LLC$4M
- CITADEL ADVISORS LLC$4M
- MILLENNIUM MANAGEMENT LLC$4M
- VANGUARD CAPITAL MANAGEMENT LLC$3M
Largest trims
- Woodline Partners LP$1M
- BANK OF AMERICA CORP /DE/$641K
- MORGAN STANLEY$562K
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 |
|---|---|---|---|---|
| Vivo Capital, LLC | 3,153,640 | $15M | 12.0% | 2026-Q2 |
| Commodore Capital LP added | 2,933,680 | $14M | 11.2% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 2,318,692 | $11M | 8.8% | 2026-Q2 |
| BlackRock, Inc. added | 1,665,494 | $8M | 6.4% | 2026-Q2 |
| Spruce Street Capital LP | 1,661,073 | $8M | 6.3% | 2026-Q2 |
| Almitas Capital LLC trimmed | 1,469,129 | $7M | 5.6% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 1,238,705 | $6M | 4.7% | 2026-Q2 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 1,000,000 | $5M | 3.8% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 951,997 | $5M | 3.6% | 2026-Q2 |
| Boxer Capital Management, LLC | 749,035 | $4M | 2.9% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 697,806 | $3M | 2.7% | 2026-Q2 |
| SummitTX Capital, L.P. new | 597,453 | $3M | 2.3% | 2026-Q2 |
| BALYASNY ASSET MANAGEMENT L.P. new | 556,027 | $3M | 2.1% | 2026-Q2 |
| Stonepine Capital Management, LLC trimmed | 551,692 | $3M | 2.1% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 537,064 | $3M | 2.0% | 2026-Q2 |
| Sio Capital Management, LLC trimmed | 529,933 | $3M | 2.0% | 2026-Q2 |
| Ally Bridge Group (NY) LLC | 526,315 | $3M | 2.0% | 2026-Q2 |
| Prosight Management, LP trimmed | 474,638 | $2M | 1.8% | 2026-Q2 |
| Woodline Partners LP trimmed | 459,805 | $2M | 1.8% | 2026-Q2 |
| STATE STREET CORP added | 311,602 | $2M | 1.2% | 2026-Q2 |
| NORTHERN TRUST CORP added | 214,921 | $1M | 0.8% | 2026-Q2 |
| Seven Fleet Capital Management LP added | 208,946 | $1M | 0.8% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 196,920 | $953K | 0.8% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 179,594 | $869K | 0.7% | 2026-Q2 |
| LANDSCAPE CAPITAL MANAGEMENT, L.L.C. trimmed | 167,446 | $810K | 0.6% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 145,803 | $706K | 0.6% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 129,700 | $628K | 0.5% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC new | 87,933 | $426K | 0.3% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP new | 76,045 | $368K | 0.3% | 2026-Q2 |
| UBS Group AG added | 74,086 | $359K | 0.3% | 2026-Q2 |
| Walleye Capital LLC new | 72,139 | $349K | 0.3% | 2026-Q2 |
| Bank of New York Mellon Corp new | 67,676 | $328K | 0.3% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC new | 64,220 | $311K | 0.2% | 2026-Q2 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 59,900 | $290K | 0.2% | 2026-Q2 |
| ADAR1 Capital Management, LLC added | 58,808 | $285K | 0.2% | 2026-Q2 |
| MORGAN STANLEY trimmed | 49,379 | $239K | 0.2% | 2026-Q2 |
| CAPTRUST FINANCIAL ADVISORS added | 40,165 | $194K | 0.2% | 2026-Q2 |
| Velan Capital Investment Management LP new | 40,000 | $194K | 0.2% | 2026-Q2 |
| Nuveen, LLC new | 35,333 | $171K | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ new | 25,838 | $125K | 0.1% | 2026-Q2 |
| RHUMBLINE ADVISERS new | 24,342 | $118K | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN new | 22,389 | $108K | 0.1% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ new | 22,022 | $107K | 0.1% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP trimmed | 15,913 | $77K | 0.1% | 2026-Q2 |
| Invesco Ltd. new | 13,839 | $67K | 0.1% | 2026-Q2 |
| LPL Financial LLC new | 12,350 | $60K | 0.0% | 2026-Q2 |
| CITIGROUP INC trimmed | 12,267 | $59K | 0.0% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. new | 12,186 | $59K | 0.0% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 10,971 | $55K | 0.0% | 2026-Q2 |
| Bronte Capital Management Pty Ltd. new | 10,895 | $53K | 0.0% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 10,185 | $49K | 0.0% | 2026-Q2 |
| Police & Firemen's Retirement System of New Jersey new | 8,615 | $42K | 0.0% | 2026-Q2 |
| Vanguard Global Advisers, LLC | 7,334 | $35K | 0.0% | 2026-Q2 |
| BARCLAYS PLC added | 5,491 | $27K | 0.0% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND new | 5,000 | $24K | 0.0% | 2026-Q2 |
| Legal & General Group Plc new | 2,576 | $12K | 0.0% | 2026-Q2 |
| Ameritas Investment Partners, Inc. new | 2,402 | $12K | 0.0% | 2026-Q2 |
| Russell Investments Group, Ltd. new | 2,112 | $10K | 0.0% | 2026-Q2 |
| Tower Research Capital LLC (TRC) added | 1,807 | $9K | 0.0% | 2026-Q2 |
| ROYAL BANK OF CANADA new | 938 | $5K | 0.0% | 2026-Q2 |
| Sterling Capital Management LLC new | 484 | $2K | 0.0% | 2026-Q2 |
| FEDERATED HERMES, INC. trimmed | 449 | $2K | 0.0% | 2026-Q2 |
| OSAIC HOLDINGS, INC. | 300 | $1K | 0.0% | 2026-Q2 |
| Caitong International Asset Management Co., Ltd trimmed | 274 | $1K | 0.0% | 2026-Q2 |
| SBI Securities Co., Ltd. | 201 | $973 | 0.0% | 2026-Q2 |
| FMR LLC trimmed | 61 | $295 | 0.0% | 2026-Q2 |
| BANK OF NOVA SCOTIA | 459,194 | $2M | 1.2% | 2026-Q1 stale (1 quarter behind) |
| JANE STREET GROUP, LLC added | 303,649 | $1M | 0.8% | 2026-Q1 stale (1 quarter behind) |
| BANK OF MONTREAL /CAN/ trimmed | 260,127 | $890K | 0.7% | 2026-Q1 stale (1 quarter behind) |
| CANTOR FITZGERALD, L. P. new | 200,000 | $684K | 0.5% | 2026-Q1 stale (1 quarter behind) |
| Centiva Capital, LP new | 75,000 | $256K | 0.2% | 2026-Q1 stale (1 quarter behind) |
| Peapod Lane Capital LLC trimmed | 59,854 | $207K | 0.2% | 2026-Q1 stale (1 quarter behind) |
| Persistent Asset Partners Ltd new | 38,155 | $130K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| Hudson Bay Capital Management LP new | 34,605 | $118K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| HRT FINANCIAL LP added | 32,924 | $112K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| Qube Research & Technologies Ltd added | 24,168 | $83K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| XTX Topco Ltd added | 22,402 | $77K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| MARSHALL WACE, LLP new | 17,700 | $61K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| OMERS ADMINISTRATION Corp new | 15,800 | $54K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| Private Advisor Group, LLC trimmed | 12,500 | $43K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| VANGUARD GROUP INC | 1,080,070 | $1M | 1.0% | 2025-Q4 stale (2 quarters behind) |
| Pfizer Inc | 715,295 | $815K | 0.6% | 2025-Q4 stale (2 quarters behind) |
| TWO SIGMA ADVISERS, LP trimmed | 264,900 | $302K | 0.2% | 2025-Q4 stale (2 quarters behind) |
| Rangeley Capital, LLC | 65,000 | $74K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| Squarepoint Ops LLC trimmed | 61,612 | $70K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 22,240 | $25K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| Schonfeld Strategic Advisors LLC | 14,281 | $16K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| Valeo Financial Advisors, LLC new | 10,446 | $12K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| ACT Advisors, LLC. new | 13,199 | $17K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| HIGHLINE WEALTH PARTNERS LLC | 5,000 | $6K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| Integrated Wealth Concepts LLC | 25,000 | $26K | 0.0% | 2025-Q2 stale (4 quarters behind) |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 0 | — | 0.0% | 2025-Q2 stale (4 quarters behind) |
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.