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Tang Capital Management’s IDEAYA Biosciences IDYA Stock Holding History

Tang Capital 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
Q1 		$15M Hold
450,000
– – 0.76% 27
2025
Q4 		$15.6M Buy
450,000
+50,000
+13% +$1.59M 0.77% 29
2025
Q3 		$10.9M Buy
+400,000
New +$9.67M 0.42% 59

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
BBA
Baker Bros. Advisors New York $17.4B AUM 131.5% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
LGM
Logos Global Management San Francisco, California $2B AUM 444.09% 1-Year Est. Return
Federated Hermes
Federated Hermes Pittsburgh, Pennsylvania $61.5B AUM 30.7% 1-Year Est. Return
Adage Capital Partners
Adage Capital Partners Boston, Massachusetts $64.8B AUM 42.7% 1-Year Est. Return

Tang Capital Management's IDYA Position: Q1 2026 in Review

Tang Capital Management held its IDEAYA Biosciences (IDYA) position steady in Q1 2026 at 450,000 shares worth $15M. The position accounts for 0.76% of the portfolio, ranked #27.

Tang Capital Management first reported a position in IDYA in Q3 2025 and has held it in 3 quarters since. The position peaked at $15.6M in Q4 2025. 253 funds tracked by Wall St. Rank hold IDYA as of Q1 2026.

  • Tang Capital Management held 450,000 shares of IDEAYA Biosciences worth $15M as of Q1 2026.
  • Tang Capital Management left its IDEAYA Biosciences share count unchanged in Q1 2026.
  • IDEAYA Biosciences made up 0.76% of Tang Capital Management's portfolio in Q1 2026, its #27 holding.
  • Tang Capital Management first reported a position in IDEAYA Biosciences in Q3 2025 and has held it in 3 quarters since.
  • Tang Capital Management's IDEAYA Biosciences position peaked at $15.6M in Q4 2025.
  • 253 funds tracked by Wall St. Rank held IDEAYA Biosciences as of Q1 2026.

Based on Tang Capital Management's 13F filing for Q1 2026, filed 15 May 2026.