JY
DYN icon

Jeff Yass’s Dyne Therapeutics DYN Stock Holding History

Jeff Yass’s Portfolio DYN Stock Details DYN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$1.05M Sell
47,127
-61,597
-57% -$1.15M ﹤0.01% 8087
2026
Q1 		$1.97M Buy
108,724
+10,509
+11% +$181K ﹤0.01% 6207
2025
Q4 		$1.92M Sell
98,215
-19,555
-17% -$370K ﹤0.01% 5751
2025
Q3 		$1.49M Sell
117,770
-68,245
-37% -$778K ﹤0.01% 6428
2025
Q2 		$1.77M Buy
186,015
+31,661
+21% +$349K ﹤0.01% 6056
2025
Q1 		$1.61M Buy
154,354
+74,840
+94% +$1.07M ﹤0.01% 6029
2024
Q4 		$1.87M Buy
79,514
+46,645
+142% +$1.38M ﹤0.01% 5464
2024
Q3 		$1.18M Buy
32,869
+7,348
+29% +$292K ﹤0.01% 6408
2024
Q2 		$901K Sell
25,521
-415,013
-94% -$12.1M ﹤0.01% 6836
2024
Q1 		$12.5M Buy
440,534
+414,516
+1,593% +$9.37M ﹤0.01% 2317
2023
Q4 		$346K Sell
26,018
-48,030
-65% -$469K ﹤0.01% 9530
2023
Q3 		$663K Buy
74,048
+53,041
+252% +$571K ﹤0.01% 7578
2023
Q2 		$236K Sell
21,007
-29,506
-58% -$348K ﹤0.01% 9932
2023
Q1 		$582K Buy
50,513
+33,489
+197% +$435K ﹤0.01% 8206
2022
Q4 		$197K Sell
17,024
-9,627
-36% -$111K ﹤0.01% 10153
2022
Q3 		$338K Buy
+26,651
New +$306K ﹤0.01% 9480
2021
Q2 		– Sell
-14,682
Closed -$228K – 12689
2021
Q1 		$228K Buy
+14,682
New +$284K ﹤0.01% 11156

Other funds holding DYN

T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
JT
Jupiter Topco New York $245B AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
OAG
Orbis Allan Gray Hamilton, Bermuda $29.1B AUM 60.8% 1-Year Est. Return
AVLSA
Atlas Venture Life Science Advisors Cambridge, Massachusetts $881M AUM 160.77% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
TCM
TCG Crossover Management Palo Alto, California $4.16B AUM 983.43% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Jeff Yass's DYN Position: Q2 2026 in Review

Jeff Yass reduced its Dyne Therapeutics (DYN) stake by 57% in Q2 2026, selling an estimated $1.15M and leaving 47,127 shares worth $1.05M. The position accounts for ﹤0.01% of the portfolio, ranked #8087.

Jeff Yass first reported a position in DYN in Q1 2021 and has held it in 17 quarters since. The position peaked at $12.5M in Q1 2024. 245 funds tracked by Wall St. Rank hold DYN as of Q2 2026.

  • Jeff Yass held 47,127 shares of Dyne Therapeutics worth $1.05M as of Q2 2026.
  • Jeff Yass sold 61,597 Dyne Therapeutics shares in Q2 2026, an estimated $1.15M.
  • Dyne Therapeutics made up ﹤0.01% of Jeff Yass's portfolio in Q2 2026, its #8087 holding.
  • Jeff Yass first reported a position in Dyne Therapeutics in Q1 2021 and has held it in 17 quarters since.
  • Jeff Yass's Dyne Therapeutics position peaked at $12.5M in Q1 2024.
  • 245 funds tracked by Wall St. Rank held Dyne Therapeutics as of Q2 2026.

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