What does CUSIP 45166A102 represent in this 13F holders report?

CUSIP 45166A102 is the security identifier for IDYA - IDEAYA Biosciences, Inc. - Common Stock used to aggregate holder disclosures.

How many institutions held IDYA - IDEAYA Biosciences, Inc. - Common Stock in Q1 2026?

246 institutional investors reported IDYA - IDEAYA Biosciences, Inc. - Common Stock for Q1 2026. Use the holders table for investor-level position and value details.

IDEAYA Biosciences, Inc. - Common Stock (IDYA)

CUSIP: 45166A102

Q1 2026 13F Holders as of 31 Mar 2026

Type / Class: Equity / Common Stock
Shares outstanding: 87,533,169
Total 13F shares: 93,560,106
Share change: -914,439
Total reported value: $3,116,422,513
Put/Call ratio: 81%
Price per share: $33.32
Number of holders: 246
Value change: -$31,356,702
Number of buys: 121
Number of sells: 105

Quarterly Holders Quick Answers

What is CUSIP 45166A102?
CUSIP 45166A102 identifies IDYA - IDEAYA Biosciences, Inc. - Common Stock in SEC institutional holdings data.

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Previous quarter: Q4 2025

Recent filing periods for CUSIP 45166A102:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders of IDYA - IDEAYA Biosciences, Inc. - Common Stock (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
FMR LLC	13F	Company	15%	13,149,960	$454,594,125	—	31 Dec 2025	13F
BlackRock, Inc.	13F 13D/G	Company	8.1% from 13D/G	8,209,392	$283,798,682	—	31 Dec 2025	13F 13D/G
JANUS HENDERSON GROUP PLC	13F 13D/G	Company	8.3% from 13D/G	7,186,456	$248,344,296	—	31 Dec 2025	13F 13D/G
Capital Research Global Investors	13D/G 13F	Company	6%	5,279,675	$194,503,227	-$46,897,909	31 Dec 2025	13D/G 13F
VANGUARD GROUP INC	13F	Company	5.7%	5,019,324	$173,518,031	—	31 Dec 2025	13F
STATE STREET CORP	13F	Company	4.7%	4,134,641	$142,934,539	—	31 Dec 2025	13F
BAKER BROS. ADVISORS LP	13F	Company	4.1%	3,618,826	$125,102,815	—	31 Dec 2025	13F
FEDERATED HERMES, INC.	13D/G 13F	Company	3.9%	3,395,771	$117,393,162	$0	31 Dec 2025	13D/G 13F
Logos Global Management LP	13F	Company	3.6%	3,125,000	$108,031,250	—	31 Dec 2025	13F
ADAGE CAPITAL PARTNERS GP, L.L.C.	13F	Company	3.2%	2,800,000	$96,796,000	—	31 Dec 2025	13F
Fiera Capital Corp	13F	Company	2.8%	2,437,262	$84,256,148	—	31 Dec 2025	13F
DEERFIELD MANAGEMENT COMPANY, L.P.	13F	Company	2.5%	2,153,043	$74,430,697	—	31 Dec 2025	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	2.4%	2,073,583	$71,694,992	—	31 Dec 2025	13F
Point72 Asset Management, L.P.	13D/G 13F	Company	2.1%	1,844,556	$67,953,443	-$94,600,552	31 Dec 2025	13D/G 13F
GOLDMAN SACHS GROUP INC	13F	Company	2%	1,770,866	$61,218,838	—	31 Dec 2025	13F
PRICE T ROWE ASSOCIATES INC /MD/	13F	Company	1.7%	1,449,145	$50,098,000	—	31 Dec 2025	13F
GSK plc	13F	Company	1.5%	1,333,333	$46,093,322	—	31 Dec 2025	13F
MORGAN STANLEY	13F	Company	1.4%	1,252,404	$43,295,630	—	31 Dec 2025	13F
UBS Group AG	13F	Company	1.2%	1,085,632	$37,530,298	—	31 Dec 2025	13F
S.c.a. Candriam	13F	Individual	1.2%	1,031,354	$35,655,426	—	31 Dec 2025	13F
Ensign Peak Advisors, Inc	13F	Company	1.1%	979,063	$33,846,208	—	31 Dec 2025	13F
CITADEL ADVISORS LLC	13F	Company	1.1%	959,355	$33,164,903	—	31 Dec 2025	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	1.1%	938,857	$32,456,177	—	31 Dec 2025	13F
BANK OF AMERICA CORP /DE/	13F	Company	1%	902,973	$31,215,784	—	31 Dec 2025	13F
Fisher Asset Management, LLC	13F	Company	1%	889,633	$30,754,612	—	31 Dec 2025	13F
Sofinnova Investments, Inc.	13F	Company	1%	885,121	$30,598,633	—	31 Dec 2025	13F
Redmile Group, LLC	13F	Company	0.85%	742,017	$25,651,528	—	31 Dec 2025	13F
Pictet Asset Management Holding SA	13F	Company	0.84%	734,335	$25,385,961	—	31 Dec 2025	13F
First Turn Management, LLC	13F	Company	0.83%	723,653	$25,016,684	—	31 Dec 2025	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.82%	714,633	$24,704,863	—	31 Dec 2025	13F
BNP Paribas Asset Management Holding S.A.	13F	Company	0.8%	697,925	$24,127,000	—	31 Dec 2025	13F
NORTHERN TRUST CORP	13F	Company	0.77%	675,123	$23,339,003	—	31 Dec 2025	13F
BALYASNY ASSET MANAGEMENT L.P.	13F	Company	0.68%	596,483	$20,620,417	—	31 Dec 2025	13F
Aberdeen Group plc	13F	Company	0.64%	560,623	$19,380,737	—	31 Dec 2025	13F
NEW YORK STATE COMMON RETIREMENT FUND	13F	Company	0.58%	508,347	$17,573,556	—	31 Dec 2025	13F
DAFNA Capital Management LLC	13F	Company	0.58%	506,740	$17,518,002	—	31 Dec 2025	13F
Qube Research & Technologies Ltd	13F	Company	0.53%	467,851	$16,173,609	—	31 Dec 2025	13F
Iron Triangle Partners LP	13F	Company	0.53%	467,484	$16,160,922	—	31 Dec 2025	13F
TANG CAPITAL MANAGEMENT LLC	13F	Company	0.51%	450,000	$15,556,500	—	31 Dec 2025	13F
Yujiro S. Hata	3/4/5	President and CEO, Director	— mixed-class rows	1,290,695 mixed-class rows	$13,482,366	—	30 Jan 2026	3/4/5
Nuveen, LLC	13F	Company	0.43%	374,007	$12,929,422	—	31 Dec 2025	13F
DEUTSCHE BANK AG\	13F	Company	0.42%	368,481	$12,738,388	—	31 Dec 2025	13F
JPMORGAN CHASE & CO	13F	Company	0.34%	299,888	$10,367,128	—	31 Dec 2025	13F
EVENTIDE ASSET MANAGEMENT, LLC	13F	Company	0.32%	284,069	$9,820,265	—	31 Dec 2025	13F
GENERAL AMERICAN INVESTORS CO INC	13F	Company	0.32%	280,261	$9,688,623	—	31 Dec 2025	13F
ENVESTNET ASSET MANAGEMENT INC	13F	Company	0.32%	277,560	$9,595,249	—	31 Dec 2025	13F
WELLS FARGO & COMPANY/MN	13F	Company	0.29%	256,144	$8,854,863	—	31 Dec 2025	13F
Rhenman & Partners Asset Management AB	13F	Company	0.29%	250,000	$8,642,500	—	31 Dec 2025	13F
Bank of New York Mellon Corp	13F	Company	0.28%	244,041	$8,436,481	—	31 Dec 2025	13F
FRANKLIN RESOURCES INC	13F	Company	0.27%	240,209	$8,304,025	—	31 Dec 2025	13F

Institutional Holders of IDEAYA Biosciences, Inc. - Common Stock (IDYA) as of Q1 2026

As of 31 Mar 2026, IDEAYA Biosciences, Inc. - Common Stock (IDYA) was held by 246 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 93,560,106 shares. The largest 10 holders included FMR LLC, BlackRock, Inc., JANUS HENDERSON GROUP PLC, Capital Research Global Investors, BAKER BROS. ADVISORS LP, STATE STREET CORP, VANGUARD CAPITAL MANAGEMENT LLC, Logos Global Management LP, FEDERATED HERMES, INC., and ADAGE CAPITAL PARTNERS GP, L.L.C.. This page lists 246 institutional shareholders reporting positions in this security for the Q1 2026 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q1 2026 vs Q4 2025 Across Filers

Q4 2025 holders

242

Q1 2026 holders

246

Holder diff

Investor	Q4 2025 Shares	Q1 2026 Shares	Share Diff	Share Chg %	Q4 2025 Value $	Q1 2026 Value $	Value Diff $	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.