Dyne Therapeutics DYN Institutional Ownership

NASDAQ DYN

$16.07 -0.20 (-1.23%)

At close: Oct 21, 2026 · 4:00 PM EDT

Institutions by Trading Activity

247 Institutions

Increased 139 56.3%

Unchanged 33 13.4%

Reduced 75 30.4%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

—

13F totals exceed reported shares outstanding

Shares Held by Institutions

190.61Mn

of 165.67Mn outstanding

▲+1.46% QoQ

Shares Outstanding

165.67Mn

Institutional Investors

247

filed 13F for Jun 2026

▲+20 vs prior quarter

Net Shares Added (QoQ)

+2.74Mn

accumulated since last quarter

Value of Holdings

$3.10Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Updated Oct 11, 2026

Dyne Therapeutics, Inc. (NASDAQ:DYN) was held by 247 institutional investors that filed 13F reports for the quarter ended June 30, 2026.

Total shares held in Dyne Therapeutics rose 1.46% from Q1 2026, while the number of holders rose 28.65% from Q2 2025.
Of these 247 holders, 139 added to their positions, 75 reduced their stakes and 33 left their positions unchanged.
Combined, institutional investors held 190.61Mn shares of DYN as of Q2 2026, up 2.74Mn from the prior quarter and up 64.47Mn from a year earlier.
T. Rowe Price Investment Management, Inc. was the top holder of Dyne Therapeutics as of June 30, 2026, with 30.91Mn shares.
Holders that added the most shares of Dyne Therapeutics in Q2 2026 were FMR LLC (+2.3Mn shares), T. Rowe Price Associates Inc (+1.61Mn shares), Marshall Wace, LLP (+1.41Mn shares), Logos Global Management LP (+1.15Mn shares) and Dimensional Fund Advisors LP (+994.89K shares).
Holders that trimmed the most shares of Dyne Therapeutics in Q2 2026 while keeping a position were Atlas Venture Life Science Advisors, LLC (-2.33Mn shares), Perceptive Advisors LLC (-1.98Mn shares), Adage Capital Partners GP, L.L.C. (-850K shares), FCPM III Services B.V. (-796.13K shares) and Braidwell LP (-760.4K shares).
Per Business Quant data, the 10 largest holders of Dyne Therapeutics at the end of Q2 2026 were T. Rowe Price Investment Management, Inc. (30.91Mn shares), BlackRock, Inc. (12.4Mn shares), Jupiter Topco LLC (12Mn shares), FMR LLC (11.21Mn shares), State Street Corp (7.46Mn shares), Orbis Allan Gray Ltd (7.01Mn shares), Atlas Venture Life Science Advisors, LLC (6.8Mn shares), Vanguard Capital Management LLC (6.31Mn shares), TCG Crossover Management, LLC (4.62Mn shares) and Vanguard Portfolio Management LLC (4.05Mn shares).

Form 13F Holdings

247 Institutional Holders

Report period 30 Jun, 2026

Total shares held 190.61Mn

Of outstanding —

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	T. Rowe Price Investment Management, Inc.	0001897612	30,912,287	18.66%	▲126,486	+0.41%	$686.56K
2	BlackRock, Inc.	0002012383	12,404,330	7.49%	▲704,460	+6.02%	$275.50Mn
3	Jupiter Topco LLC	0002146052	11,997,738	7.24%	▲11,997,738	0.00%	$266.63Mn
4	FMR LLC	0000315066	11,207,000	6.76%	▲2,298,020	+25.79%	$248.91Mn
5	State Street Corp	0000093751	7,458,263	4.50%	▲804,517	+12.09%	$165.65Mn
6	Orbis Allan Gray Ltd	0001663865	7,006,542	4.23%	▲244,311	+3.61%	$155.62Mn
7	Atlas Venture Life Science Advisors, LLC	0001917529	6,800,099	4.10%	▼2,330,366	-25.52%	$151.03Mn
8	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	6,310,969	3.81%	▼94,100	-1.47%	$140.17Mn
9	TCG Crossover Management, LLC	0001839948	4,615,144	2.79%	0	0.00%	$102.50Mn
10	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	4,048,428	2.44%	▼113,613	-2.73%	$89.92Mn
11	PRICE T ROWE ASSOCIATES INC /MD/	0000080255	3,936,806	2.38%	▲1,608,433	+69.08%	$87.44K
12	FCPM III SERVICES B.V.	0002013410	3,848,256	2.32%	▼796,130	-17.14%	$85.47Mn
13	GEODE CAPITAL MANAGEMENT, LLC	0001214717	3,743,427	2.26%	▲239,313	+6.83%	$83.16Mn
14	Vestal Point Capital, LP	0001974915	3,375,000	2.04%	▼625,000	-15.63%	$74.96Mn
15	ORBIMED ADVISORS LLC	0001055951	3,235,684	1.95%	▲317,800	+10.89%	$71.86Mn
16	Frazier Life Sciences Management, L.P.	0001892134	3,153,082	1.90%	0	0.00%	$70.03Mn
17	Jpmorgan Chase & Co	0000019617	3,151,656	1.90%	▼101,817	-3.13%	$67.15Mn
18	ARMISTICE CAPITAL, LLC	0001601086	3,087,226	1.86%	▼87,884	-2.77%	$68.57Mn
19	PERCEPTIVE ADVISORS LLC	0001224962	2,689,235	1.62%	▼1,979,604	-42.40%	$59.73Mn
20	Logos Global Management LP	0001792126	2,550,000	1.54%	▲1,150,000	+82.14%	$56.64Mn

Showing 1 to 20 of 247 holders