Who owns Alto Neuroscience, Inc.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of ANRO from SEC Form 13F filings across 114 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 114 institutions disclosed 29.5M shares of Alto Neuroscience, Inc. worth $777.6M — about 68.8% of shares outstanding; the largest disclosed holder is Alpha Wave Global, LP. Source: SEC Form 13F filings, parsed by EvidInvest.
114
13F holders
$777.6M
value, 2026 filers
68.8%
of shares outstanding (29.5M sh)
27
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of ANRO's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | Alpha Wave Global, LP | 3.7M | $97.8M | 1.6% | 8.7% | 0.0% |
| 2 | Commodore Capital LP | 2.7M | $71.9M | 4.3% | 6.4% | 0.0% |
| 3 | BlackRock, Inc. | 2.1M | $56.0M | 0.0% | 5% | +218.4% |
| 4 | PERCEPTIVE ADVISORS LLC | 1.6M | $42.5M | 0.6% | 3.8% | -19.9% |
| 5 | ADAGE CAPITAL PARTNERS GP, L.L.C. | 1.6M | $42.2M | 0.1% | 3.7% | +315.6% |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 1.4M | $36.7M | 0.0% | 3.2% | +15.1% |
| 7 | Spruce Street Capital LP | 1.4M | $35.7M | 7.0% | 3.2% | +2.1% |
| 8 | Vivo Capital, LLC | 1.2M | $31.9M | 2.9% | 2.8% | +16.7% |
| 9 | FRANKLIN RESOURCES INC | 1.0M | $26.7M | 0.0% | 2.4% | -8.0% |
| 10 | ARMISTICE CAPITAL, LLC | 864,000 | $22.8M | 0.3% | 2% | -5.3% |
| 11 | Affinity Asset Advisors, LLC | 850,000 | $22.4M | 1.0% | 2% | +70.0% |
| 12 | Vestal Point Capital, LP | 785,000 | $20.7M | 0.5% | 1.8% | -62.0% |
| 13 | STATE STREET CORP | 685,945 | $18.1M | 0.0% | 1.6% | +243.8% |
| 14 | GEODE CAPITAL MANAGEMENT, LLC | 678,199 | $17.9M | 0.0% | 1.6% | +131.5% |
| 15 | 72 Investment Holdings, LLC | 667,778 | $17.6M | 35.3% | 1.6% | 0.0% |
| 16 | NORTHERN TRUST CORP | 632,701 | $16.7M | 0.0% | 1.5% | +33.6% |
| 17 | MILLENNIUM MANAGEMENT LLC | 558,320 | $14.7M | 0.0% | 1.3% | -32.1% |
| 18 | Point72 Asset Management, L.P. | 502,950 | $13.3M | 0.0% | 1.2% | 0.0% |
| 19 | Venrock Adviser, LLC | 500,000 | $13.2M | 0.4% | 1.2% | 0.0% |
| 20 | Integral Health Asset Management, LLC | 500,000 | $13.2M | 0.5% | 1.2% | 0.0% |
| 21 | Driehaus Capital Management LLC | 487,576 | $12.9M | 0.1% | 1.1% | +0.2% |
| 22 | Parkman Healthcare Partners LLCNEW | 429,035 | $11.3M | 1.2% | 1% | new |
| 23 | Ikarian Capital, LLC | 407,338 | $10.7M | 1.2% | 1% | -20.9% |
| 24 | PRICE T ROWE ASSOCIATES INC /MD/ | 358,279 | $9.5M | 0.0% | 0.8% | -3.5% |
| 25 | ORBIMED ADVISORS LLC | 257,852 | $6.8M | 0.1% | 0.6% | +53.9% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.