# IDEAYA BIOSCIENCES INC COM

IDEAYA BIOSCIENCES INC COM is a security (CUSIP 45166A102) tracked across SEC portfolio filings. 268 institutional managers reported $3.3B on Form 13F as of 2026-06-30; 25 registered fund positions totaling $417.6M via N-PORT as of 2026-06-30.

## Summary

- Issuer: IDEAYA BIOSCIENCES INC
- Class: COM
- CUSIP: 45166A102
- Asset category: EC
- 13F holders: 268
- 13F value: $3.3B
- 13F period: 2026-06-30
- N-PORT fund positions: 25
- N-PORT value: $417.6M
- N-PORT report: 2026-06-30

## Top institutional holders (Form 13F)

_Showing 15 of 268 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| FMR LLC | BOSTON, MA | $438.9M | 13,172,103 |
| BlackRock, Inc. | New York, NY | $281.3M | 8,442,133 |
| JANUS HENDERSON GROUP PLC | LONDON, X0 | $242.0M | 7,265,253 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $173.5M | 5,019,324 |
| Capital Research Global Investors | Los Angeles, CA | $172.0M | 5,163,543 |
| [BAKER BROS. ADVISORS LP](https://search.stillhousedata.com/firm/158149) | NEW YORK, NY | $131.5M | 3,946,515 |
| STATE STREET CORP | BOSTON, MA | $126.0M | 3,781,167 |
| [Logos Global Management LP](https://search.stillhousedata.com/firm/305162) | San Francisco, CA | $115.0M | 3,450,000 |
| FEDERATED HERMES, INC. | Pittsburgh, PA | $99.5M | 2,987,107 |
| [ADAGE CAPITAL PARTNERS GP, L.L.C.](https://search.stillhousedata.com/firm/160679) | Boston, MA | $94.1M | 2,823,500 |
| [Fiera Capital Corp](https://search.stillhousedata.com/firm/154966) | MONTREAL, A8 | $84.2M | 2,527,076 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $83.3M | 2,500,724 |
| GOLDMAN SACHS GROUP INC | NEW YORK, NY | $63.8M | 1,655,617 |
| MORGAN STANLEY | NEW YORK, NY | $62.0M | 1,860,453 |
| DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) | New York, NY | $51.0M | 1,530,008 |

## Top fund holders (N-PORT)

_Showing 15 of 25 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [SMALLCAP World Fund Inc](https://search.stillhousedata.com/fund/S000009599) | SMALLCAP World Fund Inc | $156.1M | 19.26% |
| [Fidelity Growth Company Fund](https://search.stillhousedata.com/fund/S000007119) | Fidelity Mt. Vernon Street Trust | $124.9M | 12.64% |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $32.6M | 4.00% |
| [Janus Henderson Venture Fund](https://search.stillhousedata.com/fund/S000010488) | JANUS INVESTMENT FUND | $17.3M | 56.44% |
| [T. Rowe Price New Horizons Fund, Inc.](https://search.stillhousedata.com/fund/S000002106) | T. ROWE PRICE NEW HORIZONS FUND, INC. | $14.8M | 11.57% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $12.8M | 7.31% |
| General American Investors Company, Inc. | General American Investors Company, Inc. | $11.5M | 66.00% |
| abrdn Healthcare Investors | abrdn Healthcare Investors | $11.2M | 98.18% |
| [T. Rowe Price Health Sciences Fund, Inc.](https://search.stillhousedata.com/fund/S000002088) | T. ROWE PRICE HEALTH SCIENCES FUND, INC. | $8.6M | 7.93% |
| [U.S. MICRO CAP PORTFOLIO](https://search.stillhousedata.com/fund/S000000948) | DFA INVESTMENT DIMENSIONS GROUP INC | $7.9M | 10.55% |
| abrdn Life Sciences Investors | abrdn Life Sciences Investors | $7.0M | 125.13% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $4.6M | 9.51% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $1.5M | 0.26% |
| [VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002855) | VANGUARD INSTITUTIONAL INDEX FUNDS | $1.3M | 0.43% |
| [BlackRock Advantage SMID Cap Fund, Inc.](https://search.stillhousedata.com/fund/S000002323) | BlackRock Advantage SMID Cap Fund, Inc. | $1.0M | 13.80% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/45166a102.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

---

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.