Security key
26818M108
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 31,379,394
- Total 13F value
- $487,292,000
- Share change
- +5,039,760
- SEC-reported price per share
- $15.53
- Number of holders
- 72
- Value change
- +$72,426,450
- Number of buys
- 51
- Number of sells
- 23
- Shares outstanding
- 164,426,217
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2021
Institutions
72
Top holders
10
DYN full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q2 2021
Previous quarter: Q4 2020
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.
Comparable stake leader
MPM ASSET MANAGEMENT LLC
Disclosed value leader
MPM ASSET MANAGEMENT LLC
Comparable rows
15/15
Latest evidence
31 Dec 2020
13F
Lead comparable stake: 3%
Showing 1-6 of 15 holder rows.
Quick read
MPM ASSET MANAGEMENT LLC leads the comparable SEC ownership view at 3%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens MPM ASSET MANAGEMENT LLC's linked filing trail.
Comparable ownership
Top 5
MPM ASSET MANAGEMENT LLC
3%
CITADEL ADVISORS LLC
1.9%
Vida Ventures Advisors, LLC
1.8%
WELLINGTON MANAGEMENT GROUP LLP
1.8%
RA CAPITAL MANAGEMENT, L.P.
1.7%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| MPM ASSET MANAGEMENT LLC |
13F
Company
|
3%
|
$103,977,000
4,951,303 shares
|
— | 31 Dec 2020 |
| CITADEL ADVISORS LLC |
13F
Company
|
1.9%
|
$66,450,000
3,164,320 shares
|
— | 31 Dec 2020 |
| Vida Ventures Advisors, LLC |
13F
Company
|
1.8%
|
$62,161
2,960,046 shares
|
— | 31 Dec 2020 |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
Company
|
1.8%
|
$60,315,000
2,904,722 shares
|
— | 31 Dec 2020 |
| RA CAPITAL MANAGEMENT, L.P. |
13F
Company
|
1.7%
|
$58,906,000
2,805,045 shares
|
— | 31 Dec 2020 |
| Logos Global Management LP |
13F
Company
|
0.98%
|
$33,692,000
1,604,392 shares
|
— | 31 Dec 2020 |
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 Q1 2021
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
72
Shares
31,379,394
Rows available
72
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-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 did not pass the local price check.
Compare Q1 2021 vs Q4 2020 Across Filers
Q4 2020 holders
67
Q1 2021 holders
72
Holder diff
5
| Investor | Q4 2020 Shares | Q1 2021 Shares | Share Diff | Share Chg % | Q4 2020 value | Q1 2021 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend