Sphera Funds Management’s IDEAYA Biosciences IDYA Stock Holding History

Sphera Funds Management’s Portfolio IDYA Stock Details IDYA Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$7.32M	Buy	+196,408	New	+$6.01M	0.96%	36
2025 Q4	–	Sell	-100,000	Closed	-$2.72M	–	114
2025 Q3	$2.72M	Buy	+100,000	New	+$2.42M	0.57%	60
2022 Q1	–	Sell	-235,695	Closed	-$5.57M	–	81
2021 Q4	$5.57M	Sell	235,695 -58,924	-20%	-$1.37M	0.61%	53
2021 Q3	$7.51M	Sell	294,619 -40,175	-12%	-$938K	0.63%	51
2021 Q2	$7.03M	Buy	334,794 +132,810	+66%	+$2.73M	0.48%	60
2021 Q1	$4.75M	Buy	+201,984	New	+$3.9M	0.36%	73

Other funds holding IDYA

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Jupiter Topco New York $245B AUM

Capital Research Global Investors Los Angeles, California $717B AUM 35.42% 1-Year Est. Return

BBA

Baker Bros. Advisors New York $20B AUM 154.41% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

LGM

Logos Global Management San Francisco, California $2.32B AUM 536.01% 1-Year Est. Return

Adage Capital Partners Boston, Massachusetts $71.3B AUM 56.8% 1-Year Est. Return

Deerfield Management New York $9.59B AUM 113.36% 1-Year Est. Return

Sphera Funds Management's IDYA Position: Q2 2026 in Review

Sphera Funds Management opened a new position in IDEAYA Biosciences (IDYA) in Q2 2026: 196,408 shares worth $7.32M. The stake represents 0.96% of the portfolio and ranks #36 among its holdings. This is a return to the name: Sphera Funds Management previously reported a position in IDYA as recently as Q3 2025.

Sphera Funds Management first reported a position in IDYA in Q1 2021 and has held it in 6 quarters since. The position peaked at $7.51M in Q3 2021. 285 funds tracked by Wall St. Rank hold IDYA as of Q2 2026.

Sphera Funds Management held 196,408 shares of IDEAYA Biosciences worth $7.32M as of Q2 2026.
IDEAYA Biosciences was a new Sphera Funds Management position in Q2 2026.
IDEAYA Biosciences made up 0.96% of Sphera Funds Management's portfolio in Q2 2026, its #36 holding.
Sphera Funds Management first reported a position in IDEAYA Biosciences in Q1 2021 and has held it in 6 quarters since.
Sphera Funds Management's IDEAYA Biosciences position peaked at $7.51M in Q3 2021.
285 funds tracked by Wall St. Rank held IDEAYA Biosciences as of Q2 2026.

Based on Sphera Funds Management's 13F filing for Q2 2026, filed 14 Aug 2026.