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IDYA in the 13F filings

Ideaya Biosciences Inc · CUSIP 45166A102

Sector · Pharmaceuticals and biotechnologyTheme · Healthcare: biopharma and medtech· L3VLUP-definedTheme · Pharmaceutical preparations
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
31 Dec 2025
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 10 Feb 2026
Managers listing it
22
at least, of 95 tracked, among listed positions
Comparable managers
92
filed both Q3 2025 and Q4 2025; 3 listed it in both
Shares listed
31,748,117
combined, among listed positions
Reported value
$1.1bn
combined, at the quarter end

Among the 92 comparable managers: 14 buyers (opened or added shares) and 13 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -2,534,410.

Managers listing IDYA in Q4 2025

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q3 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

22 of 22 holders

ActionFiling
Fidelity (FMR LLC)13,149,960$455munder 0.1%Added+3,41517 Feb 2026 (the filing on sec.gov)
Janus Henderson Group Ltd7,186,456$248m0.11%Added+758,11717 Feb 2026 (the filing on sec.gov)
Capital Research Global Investors5,279,675$183munder 0.1%Trimmed-1,273,01611 Feb 2026 (the filing on sec.gov)
Point72 Asset Management LP1,844,556$64m0.07%Trimmed-1,971,14817 Feb 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc1,449,145$50munder 0.1%Added+339,40517 Feb 2026 (the filing on sec.gov)
Citadel Advisors LLC959,355$33munder 0.1%Trimmed-357,63617 Feb 2026 (the filing on sec.gov)
Balyasny Asset Management LLC596,483$21munder 0.1%Added+216,17217 Feb 2026 (the filing on sec.gov)
Invesco Ltd238,314$8.2munder 0.1%Added+114,11819 Feb 2026 (the filing on sec.gov)
Millennium Management LLC208,548$7.2munder 0.1%Added+70,96317 Feb 2026 (the filing on sec.gov)
Woodline Partners LP201,667$7.0munder 0.1%Held017 Feb 2026 (the filing on sec.gov)
Two Sigma Investments LP113,841$3.9munder 0.1%Added+4,12917 Feb 2026 (the filing on sec.gov)
Neuberger Berman Group LLC111,276$3.8munder 0.1%Newnew27 Oct 2026 (the filing on sec.gov)
AllianceBernstein LP97,886$3.4munder 0.1%Trimmed-317 Feb 2026 (the filing on sec.gov)
AQR Capital Management LLC68,177$2.4munder 0.1%Added+45,95117 Feb 2026 (the filing on sec.gov)
Susquehanna International Group LLP63,558$2.2munder 0.1%Added+18,23417 Feb 2026 (the filing on sec.gov)
Tudor Investment Corp47,938$1.7munder 0.1%Added+10,34317 Feb 2026 (the filing on sec.gov)
Walleye Capital LLC42,976$1.5munder 0.1%Trimmed-37,94813 Feb 2026 (the filing on sec.gov)
Wellington Management Group LLP34,672$1.2munder 0.1%Trimmed-2,10617 Feb 2026 (the filing on sec.gov)
Man Group PLC23,826$824kunder 0.1%Added+10,19017 Feb 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP22,308$771kunder 0.1%Trimmed-33,05517 Feb 2026 (the filing on sec.gov)
Caxton Associates LLP6,070$210kunder 0.1%Newnew13 Feb 2026 (the filing on sec.gov)
Acadian Asset Management LLC1,430$49kunder 0.1%Newnew10 Feb 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q3 2025 to Q4 2025, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (3)

Exited (6)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
6 in Q3 2024 to 3 in Q2 2026

Tracked managers listing it, at least.

03581020212022202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
IDYA by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20201$14mn.a.n.a.
Q3 20201$15mn.a.n.a.
Q4 20201$16mn.a.n.a.
Q1 20213$31mn.a.n.a.
Q2 20213$26mn.a.n.a.
Q3 20213$37mn.a.n.a.
Q4 20213$50mn.a.n.a.
Q1 20221$21mn.a.n.a.
Q2 20221$21mn.a.n.a.
Q2 20233$60mn.a.n.a.
Q3 20234$118mn.a.n.a.
Q4 20235$275m50
Q1 202410$1.0bn81
Q2 20248$479m63
Q3 20246$309m51
Q4 20245$245m32
Q1 20253$159m21
Q2 20253$374m21
Q3 20254$458m21
Q4 20253$495m1413
Q1 20262$414m1114
Q2 20263$533m1610

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

IDYA and LLY →IDYA and JNJ →IDYA and VRTX →Choose a stock to compare with IDYA →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own IDYA, latest filings →Back to the 13F Explorer →