IDEAYA Biosciences IDYA Institutional Ownership

NASDAQ IDYA

$39.86 -0.11 (-0.28%)

As of: Sep 4, 2026 · 3:59 PM EDT

Institutions by Trading Activity

284 Institutions

Increased 157 55.3%

Unchanged 38 13.4%

Reduced 89 31.3%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

111.81%

▼-3.10 pp QoQ

Shares Held by Institutions

102.93Mn

of 92.06Mn outstanding

▲+20.82% QoQ

Shares Outstanding

92.06Mn

-10.87Mn held outside 13F filers

Institutional Investors

284

filed 13F for Jun 2026

▲+32 vs prior quarter

Net Shares Added (QoQ)

+17.73Mn

accumulated since last quarter

Value of Holdings

$4.11Bn

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

Quarter ending 30 Jun, 2026

IDEAYA Biosciences, Inc. (NASDAQ:IDYA) showed up in the 13F filings of 284 institutional investors as of June 2026.

Their combined ownership stood at 111.8% of outstanding shares in June 2026, down from 114.9% in March 2026.
Their total shares held in IDYA increased 20.82% from the prior quarter, while the number of investors in IDEAYA Biosciences increased 39.9% year over year.
Of these 284 holders, 157 added to their stakes in IDEAYA Biosciences, 89 trimmed positions, and 38 made no changes.
Combined, these investors held 102.93Mn shares in IDYA for June 2026, up by 17.73Mn shares quarter on quarter, and up 7.88Mn shares year over year.
As of June 30, 2026, the biggest holder of IDEAYA Biosciences is FMR LLC at 14.11Mn shares, representing 15.33% of shares outstanding.
The biggest buyers of IDEAYA Biosciences for the quarter ending June 2026 included Jupiter Topco LLC (8.58Mn), ALLIANCEBERNSTEIN L.P. (1.53Mn), DEERFIELD MANAGEMENT COMPANY, L.P. (1.18Mn), BAKER BROS. ADVISORS LP (1.06Mn), FMR LLC (937.33K).
The biggest sellers of IDEAYA Biosciences for the quarter ending June 2026 included Federated Hermes, Inc. (1.56Mn), Fiera Capital Corp (1.08Mn), Ensign Peak Advisors, Inc (632.32K), Logos Global Management LP (450.0K), Goldman Sachs Group Inc (424.0K).
IDEAYA Biosciences's 10 largest shareholders as of June 2026 include FMR LLC (14.11Mn), BlackRock, Inc. (8.89Mn), Jupiter Topco LLC (8.58Mn), Capital Research Global Investors (5.34Mn), BAKER BROS. ADVISORS LP (5.01Mn), State Street Corp (4.55Mn), VANGUARD CAPITAL MANAGEMENT LLC (4.13Mn), Logos Global Management LP (3.0Mn), ADAGE CAPITAL PARTNERS GP, L.L.C. (2.72Mn), DEERFIELD MANAGEMENT COMPANY, L.P. (2.71Mn) per Business Quant data.

Form 13F Holdings

284 Institutional Holders

Report period 30 Jun, 2026

Total shares held 102.93Mn

Of outstanding 111.81%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	FMR LLC	0000315066	14,109,431	15.33%	▲937,328	+7.12%	$525.86Mn
2	BlackRock, Inc.	0002012383	8,893,260	9.66%	▲451,127	+5.34%	$331.45Mn
3	Jupiter Topco LLC	0002146052	8,579,881	9.32%	▲8,579,881	0.00%	$319.73Mn
4	Capital Research Global Investors	0001422848	5,344,701	5.81%	▲181,158	+3.51%	$199.20Mn
5	BAKER BROS. ADVISORS LP	0001263508	5,010,030	5.44%	▲1,063,515	+26.95%	$186.72Mn
6	State Street Corp	0000093751	4,548,911	4.94%	▲767,744	+20.30%	$169.54Mn
7	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	4,132,646	4.49%	▲400,224	+10.72%	$154.02Mn
8	Logos Global Management LP	0001792126	3,000,000	3.26%	▼450,000	-13.04%	$111.81Mn
9	ADAGE CAPITAL PARTNERS GP, L.L.C.	0001165408	2,715,391	2.95%	▼108,109	-3.83%	$101.20Mn
10	DEERFIELD MANAGEMENT COMPANY, L.P.	0001009258	2,714,503	2.95%	▲1,184,495	+77.42%	$101.17Mn
11	GEODE CAPITAL MANAGEMENT, LLC	0001214717	2,425,602	2.63%	▼75,122	-3.00%	$90.42Mn
12	PRICE T ROWE ASSOCIATES INC /MD/	0000080255	2,207,451	2.40%	▲891,582	+67.76%	$82.27K
13	Morgan Stanley	0000895421	1,931,491	2.10%	▲71,038	+3.82%	$71.99Mn
14	DIMENSIONAL FUND ADVISORS LP	0000354204	1,661,281	1.80%	▲327,803	+24.58%	$61.91Mn
15	ALLIANCEBERNSTEIN L.P.	0001109448	1,627,521	1.77%	▲1,526,735	+1,514.83%	$54.23Mn
16	Fiera Capital Corp	0001505817	1,445,885	1.57%	▼1,081,191	-42.78%	$53.89Mn
17	Federated Hermes, Inc.	0001056288	1,431,630	1.56%	▼1,555,477	-52.07%	$53.36Mn
18	GSK plc	0001131399	1,333,333	1.45%	0	0.00%	$49.69Mn
19	BNP Paribas Asset Management Holding S.A.	0001520354	1,269,889	1.38%	▲168,744	+15.32%	$47.33Mn
20	Goldman Sachs Group Inc	0000886982	1,231,614	1.34%	▼424,003	-25.61%	$45.90Mn

Showing 1 to 20 of 284 holders