# ALTO NEUROSCIENCE INC COM SHS

ALTO NEUROSCIENCE INC COM SHS is a security (CUSIP 02157Q109) tracked across SEC portfolio filings. 112 institutional managers reported $591.0M on Form 13F as of 2026-06-30; 8 registered fund positions totaling $14.1M via N-PORT as of 2026-04-30.

## Summary

- Issuer: ALTO NEUROSCIENCE INC
- Class: COM SHS
- CUSIP: 02157Q109
- Asset category: EC
- 13F holders: 112
- 13F value: $591.0M
- 13F period: 2026-06-30
- N-PORT fund positions: 8
- N-PORT value: $14.1M
- N-PORT report: 2026-04-30

## Top institutional holders (Form 13F)

_Showing 15 of 112 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [Alpha Wave Global, LP](https://search.stillhousedata.com/firm/160894) | New York, NY | $83.4M | 3,707,757 |
| [COMMODORE CAPITAL LP](https://search.stillhousedata.com/firm/304370) | NEW YORK, NY | $61.2M | 2,723,196 |
| Vestal Point Capital, LP | NEW YORK, NY | $46.4M | 2,064,075 |
| [PERCEPTIVE ADVISORS LLC](https://search.stillhousedata.com/firm/154703) | NEW YORK, NY | $45.2M | 2,009,893 |
| [Spruce Street Capital LP](https://search.stillhousedata.com/firm/333213) | NEW YORK, NY | $29.1M | 1,325,210 |
| FRANKLIN RESOURCES INC | San Mateo, CA | $24.8M | 1,101,874 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $24.3M | 1,365,847 |
| [Vivo Capital, LLC](https://search.stillhousedata.com/firm/159868) | Palo Alto, CA | $23.3M | 1,035,551 |
| [ARMISTICE CAPITAL, LLC](https://search.stillhousedata.com/firm/168978) | NEW YORK, NY | $20.5M | 912,000 |
| MILLENNIUM MANAGEMENT LLC | NEW YORK, NY | $18.5M | 821,982 |
| 72 Investment Holdings, LLC | Stamford, CT | $15.0M | 667,778 |
| BlackRock, Inc. | New York, NY | $15.0M | 666,188 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | BALA CYNWYD, PA | $14.3M | 238,498 |
| [Ikarian Capital, LLC](https://search.stillhousedata.com/firm/1778253) | DALLAS, TX | $11.6M | 515,000 |
| [Point72 Asset Management, L.P.](https://search.stillhousedata.com/firm/283077) | Stamford, CT | $11.3M | 503,087 |

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $6.8M | 0.83% |
| [T. Rowe Price Health Sciences Fund, Inc.](https://search.stillhousedata.com/fund/S000002088) | T. ROWE PRICE HEALTH SCIENCES FUND, INC. | $6.0M | 5.54% |
| [T. Rowe Price Health Sciences Portfolio](https://search.stillhousedata.com/fund/S000002083) | T. ROWE PRICE EQUITY SERIES, INC. | $369K | 5.56% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $357K | 0.06% |
| [VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002855) | VANGUARD INSTITUTIONAL INDEX FUNDS | $289K | 0.10% |
| [TIFF MULTI-ASSET FUND](https://search.stillhousedata.com/fund/S000006387) | TIFF Investment Program | $177K | 1.27% |
| [U.S. MICRO CAP PORTFOLIO](https://search.stillhousedata.com/fund/S000000948) | DFA INVESTMENT DIMENSIONS GROUP INC | $58K | 0.08% |
| [Blackstone Alternative Multi-Strategy Fund](https://search.stillhousedata.com/fund/S000045538) | Blackstone Alternative Investment Funds | $29K | 0.08% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/02157Q109.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.