DYN Institutional Ownership
Who owns Dyne Therapeutics, Inc. and what the big funds did with it last quarter, from every SEC 13F filing. 248 funds reported holding DYN at Jun 30, 2026, together owning 102.1% of the company.
- ▲133 buying vs 104 selling
- ▲Held by funds +1.2 pts
- ▲Funds holding +18
- ▲Superinvestors: 2 added, 1 cut
- ●Put/call not meaningful
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 248 | 230 | +7.8% |
| In funds' top 10 | 4 | 5 | −20.0% |
| 13F shares | 191M | 188M | +1.2% |
| Held by funds | 102.1% | 100.9% | +1.2 pts |
| New positions | 45 | 37 | +21.6% |
| Increased | 88 | 102 | −13.7% |
| Reduced | 76 | 59 | +28.8% |
| Sold out | 28 | 45 | −37.8% |
| Calls (shares) | 0 | 0 | – |
| Puts (shares) | 36K | 36K | 0.0% |
| Put/call ratio | – | – | – |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in DYN
All superinvestors →
Who owns DYN
share of fund held shares- Index and passive funds20.9%
- Active managers and hedge funds72.2%
- Banks and brokers6.3%
- Pensions, insurers and other0.6%
The top 10 holders own 53.9% of all DYN shares that funds reported. Groups are our own grouping of filers by name.
Put/call ratio
funds' options, market makers left outAbove 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.
Filed so far for Q3 2026
49 funds changed their position- Axxcess Wealth Management, LLCSold out−155K sh
- Wasatch Advisors LPTrimmed−124K sh
- Fideuram - Intesa Sanpaolo Private Banking S.p.a.Sold out−87K sh
- Y-Intercept (Hong Kong) LtdTrimmed−97K sh
- Alps Advisors IncAdded+80K sh
🔒 Free account: see all 20.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | T. Rowe Price Investment Management, Inc. | 16.55% | 30.9M | $687M | +126K |
| 2 | BlackRock, Inc. | 6.64% | 12.4M | $276M | +704K |
| 3 | Jupiter Topco LLC | 6.42% | 12M | $267M | – |
| 4 | Fmr LLC | 6.00% | 11.2M | $249M | +2.3M |
| 5 | State Street Corp | 3.99% | 7.5M | $166M | +805K |
| 6 | Orbis Allan Gray Ltd | 3.75% | 7M | $156M | +244K |
| 7 | Atlas Venture Life Science Advisors, LLC | 3.64% | 6.8M | $151M | −2.3M |
| 8 | Vanguard Capital Management LLC | 3.38% | 6.3M | $140M | −94K |
| 9 | TCG Crossover Management, LLC | 2.47% | 4.6M | $103M | 0 |
| 10 | Vanguard Portfolio Management LLC | 2.17% | 4M | $89.9M | −114K |
- Fmr LLC+2.3M sh+$51M
- Price T Rowe Associates Inc /md/+1.6M sh+$35.7M
- Marshall Wace, LLP+1.4M sh+$31.2M
- Logos Global Management LP+1.1M sh+$25.5M
- Dimensional Fund Advisors LP+995K sh+$22.1M
- Novo Holdings A/s+960K sh+$21.3M
- Citadel Advisors LLC+943K sh+$20.9M
- State Street Corp+805K sh+$17.9M
- Atlas Venture Life Science Advisors, LLC−2.3M sh−$51.8M
- Perceptive Advisors LLC−2M sh−$44M
- Adage Capital Partners Gp, L.l.c.−850K sh−$18.9M
- Stempoint Capital LP−1M sh−$18.4M
- Fcpm III Services B.v.−796K sh−$17.7M
- Braidwell LP−760K sh−$16.9M
- Vestal Point Capital, LP−625K sh−$13.9M
- Fiera Capital Corp−591K sh−$13.1M
DYN institutional ownership FAQ
Who owns the most DYN stock?
In Q2 2026 13F filings the largest holder of DYN was T. Rowe Price Investment Management, Inc., followed by BlackRock, Inc. and Jupiter Topco LLC. Index fund managers are usually the biggest holders of large companies.
What percentage of DYN is owned by institutions?
Funds that file 13F reports held 102.1% of DYN's shares at Jun 30, 2026, compared with 100.9% a quarter earlier. That counts every manager with more than $100 million in US stocks.
Are hedge funds buying DYN?
In Q2 2026, 133 funds bought DYN (45 of them new positions) and 104 sold (28 sold out completely). Among well known investors, 2 added and 1 cut. Our fund sentiment for DYN is strongly bullish.
What is DYN's institutional put/call ratio?
Too few option positions were reported for a meaningful ratio.
How current is this DYN ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.