Who owns Alto Neuroscience, Inc.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from SEC filings.
Institutional ownership of ANRO from SEC Form 13F filings across 82 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, 82 institutions disclosed 15.7M shares of Alto Neuroscience, Inc. worth $403.7M — about 36.7% of shares outstanding; the largest disclosed holder is Alpha Wave Global, LP. Source: SEC Form 13F filings, parsed by EvidInvest.
82
13F holders
$403.7M
value, 2026 filers
36.7%
of shares outstanding (15.7M sh)
22
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 | BlackRock, Inc. | 2.1M | $56.0M | 0.0% | 5% | +218.4% |
| 3 | ADAGE CAPITAL PARTNERS GP, L.L.C. | 1.6M | $42.2M | 0.1% | 3.7% | +315.6% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 1.4M | $36.7M | 0.0% | 3.2% | -42.4% |
| 5 | FRANKLIN RESOURCES INC | 1.0M | $26.7M | 0.0% | 2.4% | -8.0% |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | 678,199 | $17.9M | 0.0% | 1.6% | +131.5% |
| 7 | NORTHERN TRUST CORP | 632,701 | $16.7M | 0.0% | 1.5% | +33.6% |
| 8 | MILLENNIUM MANAGEMENT LLC | 558,320 | $14.7M | 0.0% | 1.3% | -32.1% |
| 9 | Point72 Asset Management, L.P. | 502,950 | $13.3M | 0.0% | 1.2% | 0.0% |
| 10 | PRICE T ROWE ASSOCIATES INC /MD/ | 358,279 | $9,456 | 0.0% | 0.8% | -3.5% |
| 11 | ORBIMED ADVISORS LLC | 257,852 | $6.8M | 0.1% | 0.6% | +53.9% |
| 12 | Schonfeld Strategic Advisors LLCNEW | 257,631 | $6.8M | 0.0% | 0.6% | new |
| 13 | GOLDMAN SACHS GROUP INC | 236,830 | $6.2M | 0.0% | 0.6% | +126.2% |
| 14 | MARSHALL WACE, LLP | 225,503 | $6.0M | 0.0% | 0.5% | +27.9% |
| 15 | VANGUARD FIDUCIARY TRUST CO | 211,257 | $5.6M | 0.0% | 0.5% | +27.8% |
| 16 | AMERIPRISE FINANCIAL INC | 190,996 | $5.0M | 0.0% | 0.4% | +1333.5% |
| 17 | VANGUARD PORTFOLIO MANAGEMENT LLCNEW | 181,101 | $4.8M | 0.0% | 0.4% | new |
| 18 | TWO SIGMA INVESTMENTS, LP | 147,299 | $3.9M | 0.0% | 0.3% | -31.8% |
| 19 | BOOTHBAY FUND MANAGEMENT, LLC | 106,234 | $2.8M | 0.0% | 0.2% | -23.7% |
| 20 | ALKEON CAPITAL MANAGEMENT LLC | 102,101 | $2.7M | 0.0% | 0.2% | -55.0% |
| 21 | STIFEL FINANCIAL CORP | 85,480 | $2.3M | 0.0% | 0.2% | -1.0% |
| 22 | Sixth Street Partners Management Company, L.P.NEW | 80,583 | $2.1M | 0.4% | 0.2% | new |
| 23 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 80,583 | $2.1M | 0.0% | 0.2% | +373.5% |
| 24 | Bank of New York Mellon CorpNEW | 76,330 | $2.0M | 0.0% | 0.2% | new |
| 25 | MORGAN STANLEY | 74,940 | $2.0M | 0.0% | 0.2% | +9.2% |
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.