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Diadema Partners’s Cogent Biosciences COGT Stock Holding History

Diadema Partners’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 		$19.1M Buy
493,664
+170,900
+53% +$5.98M 2.41% 8
2026
Q1 		$12.4M Buy
322,764
+190,912
+145% +$7.05M 2.11% 12
2025
Q4 		$4.68M Buy
131,852
+34,039
+35% +$957K 0.81% 34
2025
Q3 		$1.4M Sell
97,813
-294,400
-75% -$3.49M 0.36% 73
2025
Q2 		$2.82M Hold
392,213
– – 0.86% 37
2025
Q1 		$2.35M Buy
392,213
+302,213
+336% +$2.37M 0.61% 39
2024
Q4 		$702K Buy
+90,000
New +$897K 0.3% 67

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

Diadema Partners's COGT Position: Q2 2026 in Review

Diadema Partners increased its Cogent Biosciences (COGT) stake by 53% in Q2 2026, buying an estimated $5.98M and bringing the position to 493,664 shares worth $19.1M. The position accounts for 2.41% of the portfolio, ranked #8.

Diadema Partners first reported a position in COGT in Q4 2024 and has held it in 7 quarters since. 322 funds tracked by Wall St. Rank hold COGT as of Q2 2026.

  • Diadema Partners held 493,664 shares of Cogent Biosciences worth $19.1M as of Q2 2026.
  • Diadema Partners bought 170,900 Cogent Biosciences shares in Q2 2026, an estimated $5.98M.
  • Cogent Biosciences made up 2.41% of Diadema Partners's portfolio in Q2 2026, its #8 holding.
  • Diadema Partners first reported a position in Cogent Biosciences in Q4 2024 and has held it in 7 quarters since.
  • 322 funds tracked by Wall St. Rank held Cogent Biosciences as of Q2 2026.

Based on Diadema Partners's 13F filing for Q2 2026, filed 14 Aug 2026.