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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
Q2 		$16.8M Hold
450,000
– – 0.76% 28
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 $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

Tang Capital Management's IDYA Position: Q2 2026 in Review

Tang Capital Management held its IDEAYA Biosciences (IDYA) position steady in Q2 2026 at 450,000 shares worth $16.8M. The position accounts for 0.76% of the portfolio, ranked #28.

Tang Capital Management first reported a position in IDYA in Q3 2025 and has held it in 4 quarters since. 286 funds tracked by Wall St. Rank hold IDYA as of Q2 2026.

  • Tang Capital Management held 450,000 shares of IDEAYA Biosciences worth $16.8M as of Q2 2026.
  • Tang Capital Management left its IDEAYA Biosciences share count unchanged in Q2 2026.
  • IDEAYA Biosciences made up 0.76% of Tang Capital Management's portfolio in Q2 2026, its #28 holding.
  • Tang Capital Management first reported a position in IDEAYA Biosciences in Q3 2025 and has held it in 4 quarters since.
  • 286 funds tracked by Wall St. Rank held IDEAYA Biosciences as of Q2 2026.

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