Security key
26818M108
- Security type / class
- Equity / Common Stock
- Shares outstanding
- 164,426,217
- Total 13F shares
- 177,889,364
- Share change
- +22,989,326
- Total reported value
- $3,479,399,314
- Put/Call ratio
- 221%
- Reported price per share
- $19.56
- Number of holders
- 231
- Value change
- +$511,413,774
- Number of buys
- 148
- Number of sells
- 85
Security identity
2 facts
Holder snapshot
9 facts
Report period
Q4 2025
Institutions
231
Top holders
10
DYN full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q1 2026
Previous quarter: Q3 2025
Dyne Therapeutics, Inc. SEC filings
Dyne Therapeutics, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 26818M108
Recent filing periods:
Ownership snapshot
Top reported holders of DYN - Dyne Therapeutics, Inc. - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Lead holder
BlackRock, Inc.
13D/G signal
BlackRock, Inc.
Evidence rows
15
Latest as of
30 Sep 2025
13F
13D/G
3/4/5
Lead comparable stake: 5.8%
13D/G row: BlackRock, Inc.
Showing 1-6 of 15 holder rows.
Rank 1 holder
BlackRock, Inc.
13F
13D/G
- Ownership
- 5.8%
- Position
- $121.88M
Rank 2 holder
Forbion Capital Fund IV Cooperatief U.A.
13D/G
- Ownership
- 4.8%
- Position
- $60M
Rank 3 holder
Atlas Venture Fund XI, L.P.
3/4/5
13D/G
- Ownership
- 4%
- Position
- $165.71M
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
Company
|
5.8%
from 13D/G
|
$121,881,599
9,634,909 shares
|
— | 30 Sep 2025 |
| Forbion Capital Fund IV Cooperatief U.A. |
13D/G
ForDyne B.V.
|
4.8%
|
$60,000,055
5,400,545 shares
|
$0 | 31 Mar 2025 |
| Atlas Venture Fund XI, L.P. |
3/4/5
13D/G
10%+ Owner · Atlas Venture Associates XI, L.P.
|
4%
from 13D/G
|
$165,705,095
6,562,578 shares
|
— | 26 Feb 2024 |
| RTW INVESTMENTS, LP |
13F
13D/G
Company
|
1.5%
from 13D/G
|
$36,565,673
2,890,567 shares
|
— | 30 Sep 2025 |
| Point72 Asset Management, L.P. |
13F
13D/G
Company
|
1.5%
from 13D/G
|
$21,730,269
1,717,807 shares
|
— | 30 Sep 2025 |
| JANUS HENDERSON GROUP PLC |
13F
Company
|
9%
|
$186,489,080
14,745,505 shares
|
— | 30 Sep 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q4 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
231
Shares
177,889,364
Rows available
231
| Investor | Option | Weight % | Change % | Reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* Reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that failed the local validity check.
Compare Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
205
Q4 2025 holders
231
Holder diff
26
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 value | Q4 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend