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Rock Springs Capital Management’s Cogent Biosciences COGT Stock Holding History

Rock Springs Capital Management’s Portfolio COGT Stock Details COGT Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$20M Sell
515,917
-108,238
-17% -$3.79M 0.97% 34
2026
Q1 		$24M Sell
624,155
-224,875
-26% -$8.3M 1.42% 22
2025
Q4 		$30.2M Sell
849,030
-159,278
-16% -$4.48M 1.55% 20
2025
Q3 		$14.5M Buy
1,008,308
+208,109
+26% +$2.47M 0.85% 44
2025
Q2 		$5.75M Buy
+800,199
New +$4.44M 0.36% 61

Other funds holding COGT

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
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
JT
Jupiter Topco New York $245B AUM
FFM
Fairmount Funds Management West Conshohocken, Pennsylvania $1.51B AUM 546.08% 1-Year Est. Return
DM
Deerfield Management New York $9.59B AUM 113.36% 1-Year Est. Return
TCM
TCG Crossover Management Palo Alto, California $4.16B AUM 983.43% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

Rock Springs Capital Management's COGT Position: Q2 2026 in Review

Rock Springs Capital Management reduced its Cogent Biosciences (COGT) stake by 17% in Q2 2026, selling an estimated $3.79M and leaving 515,917 shares worth $20M. The position accounts for 0.97% of the portfolio, ranked #34.

Rock Springs Capital Management first reported a position in COGT in Q2 2025 and has held it in 5 quarters since. The position peaked at $30.2M in Q4 2025. 323 funds tracked by Wall St. Rank hold COGT as of Q2 2026.

  • Rock Springs Capital Management held 515,917 shares of Cogent Biosciences worth $20M as of Q2 2026.
  • Rock Springs Capital Management sold 108,238 Cogent Biosciences shares in Q2 2026, an estimated $3.79M.
  • Cogent Biosciences made up 0.97% of Rock Springs Capital Management's portfolio in Q2 2026, its #34 holding.
  • Rock Springs Capital Management first reported a position in Cogent Biosciences in Q2 2025 and has held it in 5 quarters since.
  • Rock Springs Capital Management's Cogent Biosciences position peaked at $30.2M in Q4 2025.
  • 323 funds tracked by Wall St. Rank held Cogent Biosciences as of Q2 2026.

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