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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
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
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
BBA
Baker Bros. Advisors New York $17.4B AUM 131.5% 1-Year Est. Return
Federated Hermes
Federated Hermes Pittsburgh, Pennsylvania $61.5B AUM 30.7% 1-Year Est. Return
LGM
Logos Global Management San Francisco, California $2B AUM 444.09% 1-Year Est. Return
Adage Capital Partners
Adage Capital Partners Boston, Massachusetts $64.8B AUM 42.7% 1-Year Est. Return

Sphera Funds Management's IDYA Position: Q4 2025 in Review

Sphera Funds Management sold out of IDEAYA Biosciences (IDYA) in Q4 2025, closing a stake of 100,000 shares — an estimated $2.72M sold.

Sphera Funds Management first reported a position in IDYA in Q1 2021 and held it in 5 quarters. The position peaked at $7.51M in Q3 2021. 246 funds tracked by Wall St. Rank hold IDYA as of Q4 2025.

  • Sphera Funds Management reported no remaining IDEAYA Biosciences position as of Q4 2025 after selling out during the quarter.
  • Sphera Funds Management sold 100,000 IDEAYA Biosciences shares in Q4 2025, an estimated $2.72M.
  • Sphera Funds Management first reported a position in IDEAYA Biosciences in Q1 2021 and held it in 5 quarters.
  • Sphera Funds Management's IDEAYA Biosciences position peaked at $7.51M in Q3 2021.
  • 246 funds tracked by Wall St. Rank held IDEAYA Biosciences as of Q4 2025.

Based on Sphera Funds Management's 13F filing for Q4 2025, filed 17 Feb 2026.