# TECTONIC THERAPEUTIC INC COM

TECTONIC THERAPEUTIC INC COM is a security (CUSIP 878972108) tracked across SEC portfolio filings. 114 institutional managers reported $418.0M on Form 13F as of 2026-06-30; 14 registered fund positions totaling $68.2M via N-PORT as of 2026-05-31.

## Summary

- Issuer: TECTONIC THERAPEUTIC INC
- Class: COM
- CUSIP: 878972108
- Asset category: EC
- 13F holders: 114
- 13F value: $418.0M
- 13F period: 2026-06-30
- N-PORT fund positions: 14
- N-PORT value: $68.2M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 114 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| FMR LLC | BOSTON, MA | $87.1M | 2,816,494 |
| Aberdeen Group plc | EDINBURGH, X0 | $39.3M | 1,141,824 |
| TCG Crossover Management, LLC | PALO ALTO, CA | $37.2M | 1,204,891 |
| BlackRock, Inc. | New York, NY | $26.6M | 860,352 |
| [BRAIDWELL LP](https://search.stillhousedata.com/firm/316988) | STAMFORD, CT | $26.2M | 847,151 |
| [First Light Asset Management, LLC](https://search.stillhousedata.com/firm/168899) | Edina, MN | $20.0M | 647,743 |
| [BAKER BROS. ADVISORS LP](https://search.stillhousedata.com/firm/158149) | NEW YORK, NY | $18.8M | 607,788 |
| [5AM Venture Management, LLC](https://search.stillhousedata.com/firm/160395) | San Francisco, CA | $18.8M | 606,660 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $12.5M | 599,898 |
| Vestal Point Capital, LP | NEW YORK, NY | $10.1M | 328,000 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | BALA CYNWYD, PA | $9.1M | 16,175 |
| [KENNEDY CAPITAL MANAGEMENT LLC](https://search.stillhousedata.com/firm/105834) | ST LOUIS, MO | $8.9M | 286,682 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $8.3M | 268,273 |
| [MARSHALL WACE, LLP](https://search.stillhousedata.com/firm/160885) | LONDON, X0 | $7.1M | 229,595 |
| [ORBIMED ADVISORS LLC](https://search.stillhousedata.com/firm/118608) | New York, NY | $7.0M | 226,600 |

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| abrdn Healthcare Investors | abrdn Healthcare Investors | $23.8M | 209.59% |
| [Fidelity Growth Company Fund](https://search.stillhousedata.com/fund/S000007119) | Fidelity Mt. Vernon Street Trust | $22.4M | 2.27% |
| abrdn Life Sciences Investors | abrdn Life Sciences Investors | $11.5M | 204.41% |
| [T. Rowe Price Health Sciences Fund, Inc.](https://search.stillhousedata.com/fund/S000002088) | T. ROWE PRICE HEALTH SCIENCES FUND, INC. | $3.8M | 3.47% |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $3.4M | 0.42% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $1.8M | 1.00% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $588K | 1.22% |
| [Columbia Variable Portfolio - Small Company Growth Fund](https://search.stillhousedata.com/fund/S000010658) | COLUMBIA FUNDS VARIABLE INSURANCE TRUST | $281K | 13.07% |
| [T. Rowe Price Health Sciences Portfolio](https://search.stillhousedata.com/fund/S000002083) | T. ROWE PRICE EQUITY SERIES, INC. | $235K | 3.55% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $201K | 0.03% |
| [VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002855) | VANGUARD INSTITUTIONAL INDEX FUNDS | $185K | 0.06% |
| [DWS Small Cap Index VIP](https://search.stillhousedata.com/fund/S000006223) | DEUTSCHE DWS INVESTMENTS VIT FUNDS | $47K | 1.13% |
| Guggenheim Active Allocation Fund | Guggenheim Active Allocation Fund | $561 | 0.01% |
| [Blackstone Alternative Multi-Strategy Fund](https://search.stillhousedata.com/fund/S000045538) | Blackstone Alternative Investment Funds | $-17K | -0.05% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/878972108.md)
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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.