Vanguard Portfolio Management
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Vanguard Portfolio Management’s Dyne Therapeutics DYN Stock Holding History

Vanguard Portfolio Management’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 		$89.9M Sell
4,048,428
-113,613
-3% -$2.11M ﹤0.01% 1541
2026
Q1 		$75.5M Buy
+4,162,041
New +$71.8M ﹤0.01% 1539

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
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

Vanguard Portfolio Management's DYN Position: Q2 2026 in Review

Vanguard Portfolio Management reduced its Dyne Therapeutics (DYN) stake by 2.7% in Q2 2026, selling an estimated $2.11M and leaving 4,048,428 shares worth $89.9M. The position accounts for ﹤0.01% of the portfolio, ranked #1541.

Vanguard Portfolio Management first reported a position in DYN in Q1 2026 and has held it in 2 quarters since. 246 funds tracked by Wall St. Rank hold DYN as of Q2 2026.

  • Vanguard Portfolio Management held 4,048,428 shares of Dyne Therapeutics worth $89.9M as of Q2 2026.
  • Vanguard Portfolio Management sold 113,613 Dyne Therapeutics shares in Q2 2026, an estimated $2.11M.
  • Dyne Therapeutics made up ﹤0.01% of Vanguard Portfolio Management's portfolio in Q2 2026, its #1541 holding.
  • Vanguard Portfolio Management first reported a position in Dyne Therapeutics in Q1 2026 and has held it in 2 quarters since.
  • 246 funds tracked by Wall St. Rank held Dyne Therapeutics as of Q2 2026.

Based on Vanguard Portfolio Management's 13F filing for Q2 2026, filed 13 Aug 2026.