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 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 Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return

Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

AVLSA

Atlas Venture Life Science Advisors Cambridge, Massachusetts $790M AUM 223.66% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

OAG

Orbis Allan Gray Hamilton, Bermuda $23.7B AUM 65.43% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Perceptive Advisors New York $5.12B AUM 314.02% 1-Year Est. Return

FIS

FCPM III Services Naarden, Netherlands $722M AUM 73.61% 1-Year Est. Return

XTX Topco's DYN Position: Q1 2026 in Review

XTX Topco reduced its Dyne Therapeutics (DYN) stake by 25% in Q1 2026, selling an estimated $241K and leaving 42,710 shares worth $774K. The position accounts for 0.01% of the portfolio, ranked #1639.

XTX Topco first reported a position in DYN in Q1 2023 and has held it in 8 quarters since. The position peaked at $1.11M in Q4 2025. 227 funds tracked by Wall St. Rank hold DYN as of Q1 2026.

XTX Topco held 42,710 shares of Dyne Therapeutics worth $774K as of Q1 2026.
XTX Topco sold 13,951 Dyne Therapeutics shares in Q1 2026, an estimated $241K.
Dyne Therapeutics made up 0.01% of XTX Topco's portfolio in Q1 2026, its #1639 holding.
XTX Topco first reported a position in Dyne Therapeutics in Q1 2023 and has held it in 8 quarters since.
XTX Topco's Dyne Therapeutics position peaked at $1.11M in Q4 2025.
227 funds tracked by Wall St. Rank held Dyne Therapeutics as of Q1 2026.

Based on XTX Topco's 13F filing for Q1 2026, filed 15 May 2026.