IDEAYA Biosciences IDYA Institutional Ownership

NASDAQ IDYA

$35.47 +0.11 (+0.31%)

At close: Oct 21, 2026 · 4:00 PM EDT

Institutions by Trading Activity

283 Institutions

Increased 156 55.1%

Unchanged 38 13.4%

Reduced 89 31.4%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

—

13F totals exceed reported shares outstanding

Shares Held by Institutions

102.18Mn

of 96.38Mn outstanding

▲+7.94% QoQ

Shares Outstanding

96.38Mn

Institutional Investors

283

filed 13F for Jun 2026

▲+32 vs prior quarter

Net Shares Added (QoQ)

+7.52Mn

accumulated since last quarter

Value of Holdings

$3.61Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Updated Oct 11, 2026

IDEAYA Biosciences, Inc. (NASDAQ:IDYA) was reported as a holding by 283 institutional investors in 13F filings for the quarter ended June 30, 2026.

Total shares held in IDYA rose 7.94% from Q1 2026; the number of holders rose 41.50% from Q2 2025.
Among the 283 holders of IDEAYA Biosciences, 156 added to their positions, 89 reduced their stakes and 38 left their positions unchanged.
Altogether, institutional holders owned 102.18Mn IDYA shares at the end of Q2 2026, up 7.52Mn from the prior quarter and up 8.64Mn from a year earlier.
FMR LLC was the top holder of IDEAYA Biosciences as of June 30, 2026, with 14.11Mn shares.
Among holders that already owned IDEAYA Biosciences, the biggest buyers in Q2 2026 were AllianceBernstein L.P. (+1.53Mn shares), Deerfield Management Company, L.P. (+1.18Mn shares), Baker Bros. Advisors LP (+1.06Mn shares), FMR LLC (+937.33K shares) and T. Rowe Price Associates Inc (+891.58K shares).
Holders that trimmed the most shares of IDEAYA Biosciences in Q2 2026 while keeping a position were Federated Hermes, Inc. (-1.56Mn shares), Fiera Capital Corp (-1.08Mn shares), Ensign Peak Advisors, Inc (-632.32K shares), Logos Global Management LP (-450K shares) and Goldman Sachs Group Inc (-424K shares).
Per Business Quant, the top 10 investors in IDYA for the quarter ended June 30, 2026 were FMR LLC (14.11Mn shares), BlackRock, Inc. (8.89Mn shares), Jupiter Topco LLC (8.58Mn shares), Capital Research Global Investors (5.34Mn shares), Baker Bros. Advisors LP (5.01Mn shares), State Street Corp (4.55Mn shares), Vanguard Capital Management LLC (4.13Mn shares), Logos Global Management LP (3Mn shares), Adage Capital Partners GP, L.L.C. (2.72Mn shares) and Deerfield Management Company, L.P. (2.71Mn shares).

Form 13F Holdings

284 Institutional Holders

Report period 30 Jun, 2026

Total shares held 102.18Mn

Of outstanding —

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	FMR LLC	0000315066	14,109,431	14.64%	▲937,328	+7.12%	$525.86Mn
2	BlackRock, Inc.	0002012383	8,893,260	9.23%	▲451,127	+5.34%	$331.45Mn
3	Jupiter Topco LLC	0002146052	8,579,881	8.90%	▲8,579,881	0.00%	$319.73Mn
4	Capital Research Global Investors	0001422848	5,344,701	5.55%	▲181,158	+3.51%	$199.20Mn
5	BAKER BROS. ADVISORS LP	0001263508	5,010,030	5.20%	▲1,063,515	+26.95%	$186.72Mn
6	State Street Corp	0000093751	4,548,911	4.72%	▲767,744	+20.30%	$169.54Mn
7	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	4,132,646	4.29%	▲400,224	+10.72%	$154.02Mn
8	Logos Global Management LP	0001792126	3,000,000	3.11%	▼450,000	-13.04%	$111.81Mn
9	ADAGE CAPITAL PARTNERS GP, L.L.C.	0001165408	2,715,391	2.82%	▼108,109	-3.83%	$101.20Mn
10	DEERFIELD MANAGEMENT COMPANY, L.P.	0001009258	2,714,503	2.82%	▲1,184,495	+77.42%	$101.17Mn
11	GEODE CAPITAL MANAGEMENT, LLC	0001214717	2,425,602	2.52%	▼75,122	-3.00%	$90.42Mn
12	PRICE T ROWE ASSOCIATES INC /MD/	0000080255	2,207,451	2.29%	▲891,582	+67.76%	$82.27K
13	Morgan Stanley	0000895421	1,931,491	2.00%	▲71,038	+3.82%	$71.99Mn
14	DIMENSIONAL FUND ADVISORS LP	0000354204	1,661,281	1.72%	▲327,803	+24.58%	$61.91Mn
15	ALLIANCEBERNSTEIN L.P.	0001109448	1,627,521	1.69%	▲1,526,735	+1,514.83%	$54.23Mn
16	Fiera Capital Corp	0001505817	1,445,885	1.50%	▼1,081,191	-42.78%	$53.89Mn
17	Federated Hermes, Inc.	0001056288	1,431,630	1.49%	▼1,555,477	-52.07%	$53.36Mn
18	GSK plc	0001131399	1,333,333	1.38%	0	0.00%	$49.69Mn
19	BNP Paribas Asset Management Holding S.A.	0001520354	1,269,889	1.32%	▲168,744	+15.32%	$47.33Mn
20	Goldman Sachs Group Inc	0000886982	1,231,614	1.28%	▼424,003	-25.61%	$45.90Mn

Showing 1 to 20 of 284 holders