DYN in the 13F filings
Dyne Therapeutics Inc · CUSIP 26818M108
- Quarter end
- 30 Jun 2026
- the date the book describes
- Filed
- 2 Sep 2026
- latest of these filings; the earliest 12 Aug 2026
- Managers listing it
- 20
- at least, of 95 tracked, among listed positions
- Comparable managers
- 91
- filed both Q1 2026 and Q2 2026; 3 listed it in both
- Shares listed
- 32,748,474
- combined, among listed positions
- Reported value
- $727m
- combined, at the quarter end
AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.
Among the 91 comparable managers: 12 buyers (opened or added shares) and 11 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +4,174,784.
Managers listing DYN in Q2 2026
20 of 20 holders
Largest increases and reductions, by shares
Increases
- Fidelity (FMR LLC)existing position · 11,207,000 shares now+2,298,020
- T. Rowe Price Associates Incexisting position · 3,936,806 shares now+1,608,433
- Marshall Wace LLPexisting position · 1,488,917 shares now+1,405,770
- Citadel Advisors LLCexisting position · 1,143,958 shares now+942,814
- Millennium Management LLCexisting position · 431,850 shares now+273,302
Reductions
- Janus Henderson Group Ltdexisting position · 11,997,738 shares now-1,649,638
- Squarepoint Ops LLCexisting position · 300,074 shares now-534,102
- Renaissance Technologies LLCexisting position · 360,572 shares now-173,028
- Invesco Ltdexisting position · 164,598 shares now-84,343
- Susquehanna International Group LLPexisting position · 47,127 shares now-61,597
New positions and exits
New (3)
Exited (5)
- PDT Partners LLCwas $3.3m
- Man Group PLCwas $1.7m
- Tudor Investment Corpwas $1.4m
- Farallon Capital Management LLCwas $181k
- Quantbot Technologies LPwas $20k
Ownership over time
Tracked managers listing it, at least.
| Quarter | Holders | Reported value | Buyers | Sellers |
|---|---|---|---|---|
| Q3 2020 | 3 | $11m | n.a. | n.a. |
| Q4 2020 | 1 | $10m | n.a. | n.a. |
| Q1 2021 | 1 | $5.9m | n.a. | n.a. |
| Q2 2021 | 2 | $19m | n.a. | n.a. |
| Q3 2021 | 2 | $17m | n.a. | n.a. |
| Q4 2021 | 2 | $21m | n.a. | n.a. |
| Q1 2022 | 2 | $26m | n.a. | n.a. |
| Q2 2022 | 1 | $4.6m | n.a. | n.a. |
| Q3 2022 | 1 | $19m | n.a. | n.a. |
| Q4 2022 | 2 | $17m | n.a. | n.a. |
| Q1 2023 | 1 | $432k | n.a. | n.a. |
| Q2 2023 | 1 | $4.3m | n.a. | n.a. |
| Q3 2023 | 1 | $3.0m | n.a. | n.a. |
| Q4 2023 | 1 | $5.8m | 1 | 0 |
| Q1 2024 | 4 | $123m | 3 | 1 |
| Q2 2024 | 5 | $433m | 5 | 0 |
| Q3 2024 | 5 | $392m | 3 | 2 |
| Q4 2024 | 6 | $287m | 4 | 2 |
| Q1 2025 | 5 | $141m | 4 | 2 |
| Q2 2025 | 3 | $94m | 1 | 1 |
| Q3 2025 | 5 | $228m | 3 | 1 |
| Q4 2025 | 5 | $291m | 15 | 14 |
| Q1 2026 | 5 | $264m | 13 | 14 |
| Q2 2026 | 3 | $288m | 12 | 11 |
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
DYN and LLY →DYN and JNJ →DYN and VRTX →Choose a stock to compare with DYN →
How much of the picture this is
A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.
Which funds own DYN, latest filings →Back to the 13F Explorer →