American Century Companies
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American Century Companies’s Dyne Therapeutics DYN Stock Holding History

American Century Companies’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 		– Sell
-168,304
Closed -$3.29M – 2859
2025
Q4 		$3.29M Buy
168,304
+136,919
+436% +$2.59M ﹤0.01% 1899
2025
Q3 		$397K Buy
+31,385
New +$358K ﹤0.01% 2570
2024
Q3 		– Sell
-6,451
Closed -$228K – 2907
2024
Q2 		$228K Buy
+6,451
New +$187K ﹤0.01% 2701
2024
Q1 		– Sell
-22,680
Closed -$302K – 2939
2023
Q4 		$302K Sell
22,680
-4,727
-17% -$46.2K ﹤0.01% 2563
2023
Q3 		$246K Buy
27,407
+7,389
+37% +$79.6K ﹤0.01% 2523
2023
Q2 		$225K Buy
+20,018
New +$236K ﹤0.01% 2497

Other funds holding DYN

T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
AVLSA
Atlas Venture Life Science Advisors Cambridge, Massachusetts $881M AUM 160.77% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
OAG
Orbis Allan Gray Hamilton, Bermuda $29.1B AUM 60.8% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
PA
Perceptive Advisors New York $5.12B AUM 314.02% 1-Year Est. Return
FIS
FCPM III Services Naarden, Netherlands $750M AUM 127.27% 1-Year Est. Return

American Century Companies's DYN Position: Q1 2026 in Review

American Century Companies sold out of Dyne Therapeutics (DYN) in Q1 2026, closing a stake of 168,304 shares — an estimated $3.29M sold.

American Century Companies first reported a position in DYN in Q2 2023 and held it in 6 quarters. The position peaked at $3.29M in Q4 2025. 228 funds tracked by Wall St. Rank hold DYN as of Q1 2026.

  • American Century Companies reported no remaining Dyne Therapeutics position as of Q1 2026 after selling out during the quarter.
  • American Century Companies sold 168,304 Dyne Therapeutics shares in Q1 2026, an estimated $3.29M.
  • American Century Companies first reported a position in Dyne Therapeutics in Q2 2023 and held it in 6 quarters.
  • American Century Companies's Dyne Therapeutics position peaked at $3.29M in Q4 2025.
  • 228 funds tracked by Wall St. Rank held Dyne Therapeutics as of Q1 2026.

Based on American Century Companies's 13F filing for Q1 2026, filed 15 May 2026.