XT
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XTX Topco’s Dyne Therapeutics DYN Stock Holding History

XTX Topco’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 		$2.79M Buy
125,786
+83,076
+195% +$1.54M 0.04% 796
2026
Q1 		$774K Sell
42,710
-13,951
-25% -$241K 0.01% 1639
2025
Q4 		$1.11M Buy
56,661
+27,446
+94% +$520K 0.03% 958
2025
Q3 		$370K Sell
29,215
-7,248
-20% -$82.7K 0.02% 1335
2025
Q2 		$347K Buy
36,463
+4,889
+15% +$53.8K 0.01% 1331
2025
Q1 		$330K Buy
+31,574
New +$452K 0.02% 1329
2024
Q4 		– Sell
-15,943
Closed -$573K – 2433
2024
Q3 		$573K Buy
+15,943
New +$635K 0.04% 724
2024
Q1 		– Sell
-24,511
Closed -$326K – 1951
2023
Q4 		$326K Buy
+24,511
New +$239K 0.07% 556
2023
Q2 		– Sell
-10,629
Closed -$122K – 1504
2023
Q1 		$122K Buy
+10,629
New +$138K 0.03% 1059

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

XTX Topco's DYN Position: Q2 2026 in Review

XTX Topco increased its Dyne Therapeutics (DYN) stake by 195% in Q2 2026, buying an estimated $1.54M and bringing the position to 125,786 shares worth $2.79M. The position accounts for 0.04% of the portfolio, ranked #796.

XTX Topco first reported a position in DYN in Q1 2023 and has held it in 9 quarters since. 245 funds tracked by Wall St. Rank hold DYN as of Q2 2026.

  • XTX Topco held 125,786 shares of Dyne Therapeutics worth $2.79M as of Q2 2026.
  • XTX Topco bought 83,076 Dyne Therapeutics shares in Q2 2026, an estimated $1.54M.
  • Dyne Therapeutics made up 0.04% of XTX Topco's portfolio in Q2 2026, its #796 holding.
  • XTX Topco first reported a position in Dyne Therapeutics in Q1 2023 and has held it in 9 quarters since.
  • 245 funds tracked by Wall St. Rank held Dyne Therapeutics as of Q2 2026.

Based on XTX Topco's 13F filing for Q2 2026, filed 14 Aug 2026.