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Security record · archived quarter

DYN

Dyne Therapeutics, Inc. · Healthcare · Biotechnology

15.30 -4.1% mkt cap $2.86B quote delayed (FMP) · as of Oct 13 22:08 UTC — separate from filing data below

Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024
12Tracked holders
—Δ holders
13.13MShares held
$463.42MReported value
+0New positions
−0Exits
— How these are computed → Explain this at the Research Desk →

All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2024

Ownership over time
QuarterHoldersΔSharesReported valueNewExits
Q2 2026 86 +1 73.73M $1.63B +7 −5
Q1 2026 87 -4 78.51M $1.42B +7 −12
Q4 2025 92 0 87.58M $1.71B +2 −1
Q3 2025 18 +1 57.06M $721.88M +1 −1
Q2 2025 15 +2 34.50M $328.45M +2 —
Q1 2025 10 -1 12.46M $130.33M +1 −2
Q4 2024 11 0 14.93M $351.71M +1 −1
Q3 2024 10 -2 10.58M $380.14M +1 −3
Q2 2024 12 — 13.13M $463.42M — —
Holder count
Who holds it · Q2 2024
#ManagerSharesΔ sharesValueTheir weightHeld
1 Citadel Advisors ✦ 4.32M — $152.31M 0.2% n/c 1 SEC ↗
2 Adage Capital Partners ✦ 3.33M — $117.45M 0.2% n/c 1 SEC ↗
3 T. Rowe Price ✦ 2.37M — $83.50M 0.0% n/c 1 SEC ↗ ×2
4 Geode Capital Management ✦ (passive) 1.77M — $62.64M 0.0% n/c 1 SEC ↗ ×2
5 Point72 Asset Management ✦ 357.52K — $12.62M 0.0% n/c 1 SEC ↗
6 Marshall Wace ✦ 273.57K — $9.65M 0.0% n/c 1 SEC ↗
7 Wellington Management ✦ 226.42K — $7.99M 0.0% n/c 1 SEC ↗ ×4
8 Two Sigma Investments ✦ 159.15K — $5.62M 0.0% n/c 1 SEC ↗
9 Renaissance Technologies ✦ 126.00K — $4.45M 0.0% n/c 1 SEC ↗
10 Norges Bank ✦ (passive) 107.09K — $3.78M 0.0% n/c 1 SEC ↗
11 D. E. Shaw & Co. ✦ 88.42K — $3.12M 0.0% n/c 1 SEC ↗
12 AQR Capital Management ✦ 8.49K — $299,788 0.0% n/c 1 SEC ↗ ×2

“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.

New buyers

No new tracked buyers this quarter.

Exited

No tracked exits this quarter.

Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 226 holders, 184.59M shares, $2.74B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.

Frequently co-owned

What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.

Insider transactions

Open-market purchases (P)

Oct 02 Posner Brian S

Director · 2.50K sh @ 16.00 · $40,000

Open-market sales (S)

Sep 08 Cox John

Officer, Director · 5.66K sh · $106,823

Sep 08 Kerr Douglas

Officer · 1.29K sh · $24,355

Sep 08 Friedl-Naderer Johanna

Officer · 185 sh · $3,493

Sep 04 Kerr Douglas

Officer · 3.75K sh · $91,191

Sep 04 Friedl-Naderer Johanna

Officer · 900 sh · $21,915

Aug 14 Rhodes Jason P

Director · 478.38K sh · $11.96M

Aug 14 Rhodes Jason P

Director · 1.36M sh · $33.99M

Aug 14 Rhodes Jason P

Director · 322.46K sh · $8.06M

Aug 13 Kerr Douglas

Officer · 1.56K sh · $40,892

Aug 13 Rhodes Jason P

Director · 268.35K sh · $7.03M

Awards, exercises and tax withholding are never counted as buys or sales here. Methodology

Beneficial ownership
Aug 13 SC 13G/A — Janus Henderson Group Ltd.

View original SEC filing ↗

Aug 13 SC 13G/A — Atlas Venture Fund XI, L.P.

View original SEC filing ↗

Aug 06 SC 13G/A — FMR LLC

View original SEC filing ↗

Jul 28 SC 13G/A — BlackRock, Inc.

View original SEC filing ↗

Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR. Reporting period: Q2 2024 · Methodology · Get this via the API