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DYN · Dyne Therapeutics, Inc.

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$26.20 +0.22 (+0.83%)
Market Cap
$4.85B
Shares
186.75M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 246
Total Value: $4,234,270,168
Total Shares: 190,707,075

Institutional Ownership Trend

24 quarters

Holder Concentration

Across 246 13F filers · Δ vs Mar 31, 2026
Top Holder
16.2%
Sep 2023 → Jun 2026 · range 7.2% – 16.5%
−0.1 pts
Top 5
38.8%
Sep 2023 → Jun 2026 · range 31.2% – 39.4%
−0.6 pts
Top 10
53.9%
Sep 2023 → Jun 2026 · range 46.3% – 57.5%
−1.0 pts
HHI
491
Sep 2023 → Jun 2026 · range 324 – 548
Broadly held−13

Quarterly Activity

vs Mar 31, 2026
New
49
Increased
89
Decreased
75
Sold Out
33
Unchanged
33
Holder count: +16
Institutional value: +24.1%
Shares held: +1.4%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 252
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1818794 CUSIP 26818M108 13F (30d) 237 filings 231 filers Visit website Investor relations