DYN Institutional Ownership & Shareholders
DYNE THERAPEUTICS INC (DYN) is currently held by 246 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $4.16B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
T. Rowe Price Investment Management, Inc. is currently the largest disclosed institutional shareholder of DYN tracked by InsiderSet, reporting ownership valued at approximately $686.56M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $515.93M, representing an estimated loss of -24.85% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 54% of the total disclosed DYN value among the investors covered in this analysis. Major shareholders include T. Rowe Price Investment Management, Inc., Blackrock, Inc., Fmr Llc, and several other long-term asset managers with concentrated positions in DYNE THERAPEUTICS INC (DYN).
This page ranks the largest institutional DYN shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
246
Total Reported Value
$4.16B
Largest Holder
T. Rowe Price Investment Management, Inc.
Largest Position
$686.56M
Insider Transactions (90d)
17
Latest Filing Quarter
Q2 2026
New Institutional Positions
60
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| T. Rowe Price Investment Management, Inc. | 0.45% | 30,912,287 | $686,562,000 | $515,926,070 | -$170,635,930 | -24.85% | |
| Blackrock, Inc. | 0.00% | 12,404,330 | $275,500,169 | $207,028,268 | -$68,471,901 | -24.85% | |
| Fmr Llc | 0.01% | 11,207,000 | $248,907,468 | $187,044,830 | -$61,862,638 | -24.85% | |
| Janus Henderson Group Plc | 0.12% | 13,647,376 | $247,426,927 | $227,774,705 | -$19,652,222 | -7.94% | |
| State Street Corp | 0.00% | 7,458,263 | $165,648,021 | $124,478,409 | -$41,169,612 | -24.85% | |
| Orbis Allan Gray Ltd | 0.53% | 7,006,542 | $155,615,298 | $116,939,186 | -$38,676,112 | -24.85% | |
| Atlas Venture Life Science Advisors, Llc | 17.14% | 6,800,099 | $151,030,199 | $113,493,652 | -$37,536,547 | -24.85% | |
| Vanguard Capital Management Llc | 0.00% | 6,310,969 | $140,166,621 | $105,330,073 | -$34,836,548 | -24.85% | |
| Tcg Crossover Management, Llc | 2.46% | 4,615,144 | $102,502,348 | $77,026,753 | -$25,475,595 | -24.85% | |
| Vanguard Portfolio Management Llc | 0.00% | 4,048,428 | $89,915,586 | $67,568,263 | -$22,347,323 | -24.85% | |
| Price T Rowe Associates Inc | 0.01% | 3,936,806 | $87,438,000 | $65,705,292 | -$21,732,708 | -24.85% | |
| Fcpm Iii Services B.V. | 11.39% | 3,848,256 | $85,469,766 | $64,227,393 | -$21,242,373 | -24.85% | |
| Geode Capital Management, Llc | 0.00% | 3,743,427 | $83,158,757 | $62,477,797 | -$20,680,960 | -24.87% | |
| Vestal Point Capital, Lp | 1.75% | 3,375,000 | $74,958,750 | $56,328,750 | -$18,630,000 | -24.85% | |
| Orbimed Advisors Llc | 1.36% | 3,235,684 | $71,864,542 | $54,003,566 | -$17,860,976 | -24.85% | |
| Frazier Life Sciences Management, L.P. | 1.53% | 3,153,082 | $70,029,951 | $52,624,939 | -$17,405,012 | -24.85% | |
| Armistice Capital, Llc | 1.90% | 3,087,226 | $68,567,289 | $51,525,802 | -$17,041,487 | -24.85% | |
| Jpmorgan Chase & Co | 0.00% | 3,151,656 | $67,154,494 | $52,601,139 | -$14,553,355 | -21.67% | |
| Perceptive Advisors Llc | 0.93% | 2,689,235 | $59,727,909 | $44,883,332 | -$14,844,577 | -24.85% | |
| Logos Global Management Lp | 2.44% | 2,550,000 | $56,635,500 | $42,559,500 | -$14,076,000 | -24.85% | |
| Bank Of America Corp | 0.00% | 2,233,398 | $49,603,770 | $37,275,413 | -$12,328,357 | -24.85% | |
| Venrock Adviser, Llc | 1.46% | 2,173,913 | $48,282,608 | $36,282,608 | -$12,000,000 | -24.85% | |
| Goldman Sachs Group Inc | 0.01% | 2,157,195 | $47,911,301 | $36,003,585 | -$11,907,716 | -24.85% | |
| Siren, L.L.C. | 0.96% | 2,129,125 | $47,287,866 | $35,535,096 | -$11,752,770 | -24.85% | |
| Dimensional Fund Advisors Lp | 0.01% | 1,946,479 | $43,221,836 | $32,486,735 | -$10,735,101 | -24.84% | |
| Mpm Bioimpact Llc | 2.60% | 1,922,093 | $42,689,686 | $32,079,732 | -$10,609,954 | -24.85% | |
| Samlyn Capital, Llc | 0.65% | 1,754,708 | $38,972,065 | $29,286,077 | -$9,685,988 | -24.85% | |
| Sofinnova Investments, Inc. | 1.97% | 1,658,384 | $36,832,709 | $27,678,429 | -$9,154,280 | -24.85% | |
| Palo Alto Investors Lp | 5.06% | 1,647,521 | $36,591,441 | $27,497,125 | -$9,094,316 | -24.85% | |
| Vivo Capital, Llc | 3.16% | 1,557,466 | $34,591,320 | $25,994,108 | -$8,597,212 | -24.85% | |
| Aberdeen Group Plc | 0.05% | 1,539,434 | $34,190,829 | $25,693,153 | -$8,497,676 | -24.85% | |
| Deep Track Capital, Lp | 0.49% | 1,500,000 | $33,315,000 | $25,035,000 | -$8,280,000 | -24.85% | |
| Marshall Wace, Llp | 0.03% | 1,488,917 | $33,068,847 | $24,850,025 | -$8,218,822 | -24.85% | |
| Polar Capital Holdings Plc | 0.08% | 1,286,811 | $28,580,072 | $21,476,876 | -$7,103,196 | -24.85% | |
| Northern Trust Corp | 0.00% | 1,278,081 | $28,386,180 | $21,331,172 | -$7,055,008 | -24.85% | |
| Charles Schwab Investment Management Inc | 0.00% | 1,202,203 | $26,700,929 | $20,064,768 | -$6,636,161 | -24.85% | |
| Citadel Advisors Llc | 0.01% | 1,143,958 | $25,407,307 | $19,092,659 | -$6,314,648 | -24.85% | |
| Saturn V Capital Management Lp | 3.37% | 1,057,493 | $23,486,920 | $17,649,558 | -$5,837,362 | -24.85% | |
| Vanguard Fiduciary Trust Co | 0.00% | 988,949 | $21,964,557 | $16,505,559 | -$5,458,998 | -24.85% | |
| Novo Holdings A/S | 1.24% | 960,394 | $21,330,351 | $16,028,976 | -$5,301,375 | -24.85% | |
| Rock Springs Capital Management Lp | 1.02% | 942,154 | $20,925,240 | $15,724,550 | -$5,200,690 | -24.85% | |
| Braidwell Lp | 0.76% | 921,598 | $20,468,692 | $15,381,471 | -$5,087,221 | -24.85% | |
| Frontier Capital Management Co Llc | 0.18% | 874,138 | $19,414,605 | $14,589,363 | -$4,825,242 | -24.85% | |
| Baker Bros. Advisors Lp | 0.09% | 813,449 | $18,066,702 | $13,576,464 | -$4,490,238 | -24.85% | |
| Fiera Capital Corp | 0.06% | 789,989 | $17,545,656 | $13,184,916 | -$4,360,740 | -24.85% | |
| Morgan Stanley | 0.00% | 746,200 | $16,573,116 | $12,454,078 | -$4,119,038 | -24.85% | |
| Artisan Partners Limited Partnership | 0.02% | 659,786 | $14,653,847 | $11,011,828 | -$3,642,019 | -24.85% | |
| Raymond James Financial Inc | 0.00% | 576,350 | $12,800,733 | $9,619,282 | -$3,181,452 | -24.85% | |
| Td Asset Management Inc | 0.01% | 548,112 | $12,173,568 | $9,147,989 | -$3,025,579 | -24.85% | |
| Algert Global Llc | 0.13% | 506,273 | $11,244,323 | $8,449,696 | -$2,794,627 | -24.85% |
Frequently asked questions about DYN
Who are the largest institutional holders of DYN?
The largest institutional holders of DYN reported in the latest SEC Form 13F filings include T. Rowe Price Investment Management, Inc., Blackrock, Inc., Fmr Llc, Janus Henderson Group Plc, and State Street Corp. InsiderSet ranks institutional holders by their latest reported DYN position.
What is DYN institutional ownership?
This page tracks DYN positions reported by institutional investment managers through SEC Form 13F. DYNE THERAPEUTICS INC (DYN) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own DYN?
InsiderSet currently tracks 246 institutional managers reporting DYN holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of DYN shareholders.
How much DYN stock do institutions own?
Institutional investment managers disclosed approximately $4.16B in DYN holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was DYN institutional ownership last updated?
The latest DYN institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional DYN holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its DYN position after the reporting date.
Are institutions buying or selling DYN?
Institutional buying and selling can be analyzed by comparing DYN positions across consecutive 13F reporting periods. InsiderSet's DYN Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View DYN ownership changes.
How has DYN institutional ownership changed over time?
InsiderSet tracks DYN institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.