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RTW Investments’s IDEAYA Biosciences IDYA Stock Holding History

RTW Investments’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 		$13.8M Buy
+370,370
New +$11.3M 0.12% 62
2025
Q1 		– Sell
-200,000
Closed -$5.14M – 73
2024
Q4 		$5.14M Hold
200,000
– – 0.08% 60
2024
Q3 		$6.34M Buy
+200,000
New +$7.58M 0.09% 56
2022
Q1 		– Sell
-2,520,076
Closed -$59.6M – 112
2021
Q4 		$59.6M Sell
2,520,076
-746,179
-23% -$17.3M 0.87% 35
2021
Q3 		$83.3M Hold
3,266,255
– – 1.26% 26
2021
Q2 		$68.6M Buy
3,266,255
+800,000
+32% +$16.4M 1.03% 27
2021
Q1 		$58M Buy
2,466,255
+619,412
+34% +$12M 0.9% 33
2020
Q4 		$25.9M Buy
+1,846,843
New +$25M 0.43% 50

Other funds holding IDYA

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
JT
Jupiter Topco New York $245B AUM
Capital Research Global Investors
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
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Capital Management
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
Adage Capital Partners Boston, Massachusetts $71.3B AUM 56.8% 1-Year Est. Return
DM
Deerfield Management New York $9.59B AUM 113.36% 1-Year Est. Return

RTW Investments's IDYA Position: Q2 2026 in Review

RTW Investments opened a new position in IDEAYA Biosciences (IDYA) in Q2 2026: 370,370 shares worth $13.8M. The stake represents 0.12% of the portfolio and ranks #62 among its holdings. This is a return to the name: RTW Investments previously reported a position in IDYA as recently as Q4 2024.

RTW Investments first reported a position in IDYA in Q4 2020 and has held it in 8 quarters since. The position peaked at $83.3M in Q3 2021. 286 funds tracked by Wall St. Rank hold IDYA as of Q2 2026.

  • RTW Investments held 370,370 shares of IDEAYA Biosciences worth $13.8M as of Q2 2026.
  • IDEAYA Biosciences was a new RTW Investments position in Q2 2026.
  • IDEAYA Biosciences made up 0.12% of RTW Investments's portfolio in Q2 2026, its #62 holding.
  • RTW Investments first reported a position in IDEAYA Biosciences in Q4 2020 and has held it in 8 quarters since.
  • RTW Investments's IDEAYA Biosciences position peaked at $83.3M in Q3 2021.
  • 286 funds tracked by Wall St. Rank held IDEAYA Biosciences as of Q2 2026.

Based on RTW Investments's 13F filing for Q2 2026, filed 14 Aug 2026.