Dyne Therapeutics DYN Institutional Ownership

NASDAQ DYN

$16.50 +0.29 (+1.76%)

As of: Sep 30, 2026 · 10:05 AM EDT

Institutions by Trading Activity

248 Institutions

Increased 140 56.5%

Unchanged 33 13.3%

Reduced 75 30.2%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

115.93%

▲+2.10 pp QoQ

Shares Held by Institutions

191.81Mn

of 165.45Mn outstanding

▲+11.07% QoQ

Shares Outstanding

165.45Mn

-26.36Mn held outside 13F filers

Institutional Investors

248

filed 13F for Jun 2026

▲+21 vs prior quarter

Net Shares Added (QoQ)

+19.12Mn

accumulated since last quarter

Value of Holdings

$3.13Bn

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

Quarter ending 30 Jun, 2026

Dyne Therapeutics, Inc. (NASDAQ:DYN) has 248 institutional investors with active 13F positions as of June 2026.

Their combined ownership stood at 115.9% of outstanding shares in June 2026, up from 113.8% in March 2026.
Their total shares held in DYN increased 11.07% from the prior quarter, while the number of investors in Dyne Therapeutics increased 27.84% year over year.
Of these 248 funds, 140 grew their exposure to Dyne Therapeutics, 75 cut back, and 33 maintained positions.
Altogether, these fund groups held 191.81Mn shares in DYN by June 2026, up by 19.12Mn shares quarter on quarter, and up 65.67Mn shares year over year.
As of June 30, 2026, T. Rowe Price Investment Management, Inc. held the largest stake in Dyne Therapeutics with 30.91Mn shares, accounting for 18.68% of total shares outstanding.
The largest buyers of Dyne Therapeutics for the quarter ending June 2026 were Jupiter Topco LLC (12.0Mn), FMR LLC (2.3Mn), PRICE T ROWE ASSOCIATES INC /MD/ (1.61Mn), MARSHALL WACE, LLP (1.41Mn), Sixth Street Partners Management Company, L.P. (1.2Mn).
The biggest sellers of Dyne Therapeutics for the quarter ending June 2026 included Atlas Venture Life Science Advisors, LLC (2.33Mn), PERCEPTIVE ADVISORS LLC (1.98Mn), ADAGE CAPITAL PARTNERS GP, L.L.C. (850.0K), FCPM III SERVICES B.V. (796.13K), BRAIDWELL LP (760.4K).
Per Business Quant, the top 10 investors in DYN for the quarter ending June 2026 include T. Rowe Price Investment Management, Inc. (30.91Mn), BlackRock, Inc. (12.4Mn), Jupiter Topco LLC (12.0Mn), FMR LLC (11.21Mn), State Street Corp (7.46Mn), Orbis Allan Gray Ltd (7.01Mn), Atlas Venture Life Science Advisors, LLC (6.8Mn), VANGUARD CAPITAL MANAGEMENT LLC (6.31Mn), TCG Crossover Management, LLC (4.62Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (4.05Mn).

Form 13F Holdings

248 Institutional Holders

Report period 30 Jun, 2026

Total shares held 191.81Mn

Of outstanding 115.93%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	T. Rowe Price Investment Management, Inc.	0001897612	30,912,287	18.68%	▲126,486	+0.41%	$686.56K
2	BlackRock, Inc.	0002012383	12,404,330	7.50%	▲704,460	+6.02%	$275.50Mn
3	Jupiter Topco LLC	0002146052	11,997,738	7.25%	▲11,997,738	0.00%	$266.63Mn
4	FMR LLC	0000315066	11,207,000	6.77%	▲2,298,020	+25.79%	$248.91Mn
5	State Street Corp	0000093751	7,458,263	4.51%	▲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	4.11%	▼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	2.45%	▼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	2.33%	▼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	1.96%	▲317,800	+10.89%	$71.86Mn
16	Frazier Life Sciences Management, L.P.	0001892134	3,153,082	1.91%	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	1.87%	▼87,884	-2.77%	$68.57Mn
19	PERCEPTIVE ADVISORS LLC	0001224962	2,689,235	1.63%	▼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 248 holders