DYNE THERAPEUTICS INC (DYN) Institutional Ownership Changes & 13F Activity
DYNE THERAPEUTICS INC (DYN). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Perceptive Advisors Llc, Price T Rowe Associates Inc, Logos Global Management Lp, Novo Holdings A/S, and Citadel Advisors Llc.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Manufacturers Life Insurance Company, The | Buy | +14,772 | +23.1% | 78,622 | $1.75M | Q2 2026 | Sep 09, 2026 |
| Citadel Advisors Llc | Buy | +942,814 | +468.7% | 1,143,958 | $25.41M | Q2 2026 | Sep 02, 2026 |
| Allianz Asset Management Gmbh | Buy | +11,700 | +78.0% | 26,700 | $593.01K | Q2 2026 | Sep 02, 2026 |
| California State Teachers Retirement System | Sell | -4,516 | -3.2% | 135,147 | $3.00M | Q2 2026 | Aug 24, 2026 |
| Palo Alto Investors Lp | Sell | -5,451 | -0.3% | 1,647,521 | $36.59M | Q2 2026 | Aug 19, 2026 |
| Perceptive Advisors Llc | Sell | -1,979,604 | -42.4% | 2,689,235 | $59.73M | Q2 2026 | Aug 14, 2026 |
| Price T Rowe Associates Inc | Buy | +1,608,433 | +69.1% | 3,936,806 | $87.44M | Q2 2026 | Aug 14, 2026 |
| Logos Global Management Lp | Buy | +1,150,000 | +82.1% | 2,550,000 | $56.64M | Q2 2026 | Aug 14, 2026 |
| Novo Holdings A/S | Buy | +960,394 | — | 960,394 | $21.33M | Q2 2026 | Aug 14, 2026 |
| Adage Capital Partners Gp, L.L.C. | Sell | -850,000 | -85.0% | 150,000 | $3.33M | Q2 2026 | Aug 14, 2026 |
| Fcpm Iii Services B.V. | Sell | -796,130 | -17.1% | 3,848,256 | $85.47M | Q2 2026 | Aug 14, 2026 |
| Bank Of America Corp | Buy | +790,085 | +54.7% | 2,233,398 | $49.60M | Q2 2026 | Aug 14, 2026 |
| Braidwell Lp | Sell | -760,400 | -45.2% | 921,598 | $20.47M | Q2 2026 | Aug 14, 2026 |
| Vestal Point Capital, Lp | Sell | -625,000 | -15.6% | 3,375,000 | $74.96M | Q2 2026 | Aug 14, 2026 |
| Squarepoint Ops Llc | Sell | -534,102 | -64.0% | 300,074 | $6.66M | Q2 2026 | Aug 14, 2026 |
| Mpm Bioimpact Llc | Buy | +513,941 | +36.5% | 1,922,093 | $42.69M | Q2 2026 | Aug 14, 2026 |
| Deep Track Capital, Lp | Sell | -500,000 | -25.0% | 1,500,000 | $33.31M | Q2 2026 | Aug 14, 2026 |
| Goldman Sachs Group Inc | Buy | +434,079 | +25.2% | 2,157,195 | $47.91M | Q2 2026 | Aug 14, 2026 |
| Granahan Investment Management, Llc | Buy | +338,565 | — | 338,565 | $7.52M | Q2 2026 | Aug 14, 2026 |
| Orbimed Advisors Llc | Buy | +317,800 | +10.9% | 3,235,684 | $71.86M | Q2 2026 | Aug 14, 2026 |
| Ameriprise Financial Inc | Buy | +298,317 | — | 298,317 | $6.63M | Q2 2026 | Aug 14, 2026 |
| Millennium Management Llc | Buy | +273,302 | +172.4% | 431,850 | $9.59M | Q2 2026 | Aug 14, 2026 |
| Alyeska Investment Group, L.P. | Buy | +245,278 | — | 245,278 | $5.45M | Q2 2026 | Aug 14, 2026 |
| Orbis Allan Gray Ltd | Buy | +244,311 | +3.6% | 7,006,542 | $155.62M | Q2 2026 | Aug 14, 2026 |
| Moore Capital Management, Lp | Buy | +227,029 | +288.2% | 305,794 | $6.79M | Q2 2026 | Aug 14, 2026 |
| Ensign Peak Advisors, Inc | Sell | -206,860 | -41.7% | 289,730 | $6.43M | Q2 2026 | Aug 14, 2026 |
| University Of Wisconsin Foundation | Sell | -171,186 | -35.3% | 313,559 | $6.96M | Q2 2026 | Aug 14, 2026 |
| Samlyn Capital, Llc | Sell | -167,835 | -8.7% | 1,754,708 | $38.97M | Q2 2026 | Aug 14, 2026 |
| Invesco Ltd. | Buy | +164,598 | — | 164,598 | $3.66M | Q2 2026 | Aug 14, 2026 |
| Neo Ivy Capital Management | Sell | -137,313 | -81.4% | 31,440 | $698.28K | Q2 2026 | Aug 14, 2026 |
Frequently asked questions about DYN activity
Which institutional owners are buying DYN?
Institutional owners buying DYN include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in DYN activity?
"Buy" means an investor increased their reported position in DYN compared to the prior reporting period. This reflects growing exposure to DYNE THERAPEUTICS INC (DYN) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in DYN increasing?
Institutional interest in DYN can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.
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