JY
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Jeff Yass’s Cogent Biosciences COGT Stock Holding History

Jeff Yass’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 		$10.8M Buy
279,066
+208,588
+296% +$7.3M ﹤0.01% 3281
2026
Q1 		$2.71M Sell
70,478
-213,019
-75% -$7.87M ﹤0.01% 5486
2025
Q4 		$10.1M Buy
283,497
+204,874
+261% +$5.76M ﹤0.01% 3030
2025
Q3 		$1.13M Sell
78,623
-327,495
-81% -$3.88M ﹤0.01% 7053
2025
Q2 		$2.92M Buy
406,118
+269,376
+197% +$1.49M ﹤0.01% 5017
2025
Q1 		$819K Sell
136,742
-14,876
-10% -$117K ﹤0.01% 7766
2024
Q4 		$1.18M Buy
151,618
+108,248
+250% +$1.08M ﹤0.01% 6543
2024
Q3 		$468K Sell
43,370
-59,830
-58% -$583K ﹤0.01% 8610
2024
Q2 		$870K Buy
103,200
+10,267
+11% +$77.9K ﹤0.01% 6914
2024
Q1 		$625K Buy
92,933
+5,185
+6% +$32.1K ﹤0.01% 7975
2023
Q4 		$516K Buy
87,748
+55,520
+172% +$425K ﹤0.01% 8596
2023
Q3 		$314K Buy
32,228
+11,593
+56% +$137K ﹤0.01% 9244
2023
Q2 		$244K Sell
20,635
-95,175
-82% -$1.09M ﹤0.01% 9851
2023
Q1 		$1.25M Buy
115,810
+84,766
+273% +$1.08M ﹤0.01% 6244
2022
Q4 		$359K Sell
31,044
-44,458
-59% -$551K ﹤0.01% 8666
2022
Q3 		$1.13M Buy
75,502
+40,157
+114% +$550K ﹤0.01% 6321
2022
Q2 		$319K Buy
+35,345
New +$241K ﹤0.01% 9416
2021
Q2 		– Sell
-284,250
Closed -$2.5M – 12615
2021
Q1 		$2.5M Buy
+284,250
New +$2.74M ﹤0.01% 5381
2019
Q3 		– Sell
-5,926
Closed -$62K – 10225
2019
Q2 		$62K Buy
+5,926
New +$78.9K ﹤0.01% 9786
2018
Q4 		– Sell
-7,699
Closed -$317K – 9037
2018
Q3 		$317K Buy
+7,699
New +$434K ﹤0.01% 7379

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

Jeff Yass's COGT Position: Q2 2026 in Review

Jeff Yass increased its Cogent Biosciences (COGT) stake by 296% in Q2 2026, buying an estimated $7.3M and bringing the position to 279,066 shares worth $10.8M. The position accounts for ﹤0.01% of the portfolio, ranked #3281.

Jeff Yass first reported a position in COGT in Q3 2018 and has held it in 20 quarters since. 322 funds tracked by Wall St. Rank hold COGT as of Q2 2026.

  • Jeff Yass held 279,066 shares of Cogent Biosciences worth $10.8M as of Q2 2026.
  • Jeff Yass bought 208,588 Cogent Biosciences shares in Q2 2026, an estimated $7.3M.
  • Cogent Biosciences made up ﹤0.01% of Jeff Yass's portfolio in Q2 2026, its #3281 holding.
  • Jeff Yass first reported a position in Cogent Biosciences in Q3 2018 and has held it in 20 quarters since.
  • 322 funds tracked by Wall St. Rank held Cogent Biosciences as of Q2 2026.

Based on Susquehanna International Group's 13F filing for Q2 2026, filed 14 Aug 2026.