Security key
26818M108
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 35,805,078
- Total 13F value
- $753,366,735
- Share change
- +1,465,638
- SEC-reported price per share
- $21.04
- Number of holders
- 75
- Value change
- +$36,093,361
- Number of buys
- 44
- Number of sells
- 26
- Shares outstanding
- 164,426,217
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q2 2021
Institutions
75
Top holders
10
DYN full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q3 2021
Previous quarter: Q1 2021
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 Mar 2021
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%
WELLINGTON MANAGEMENT GROUP LLP
2.3%
Logos Global Management LP
1.9%
CITADEL ADVISORS LLC
1.9%
Vida Ventures Advisors, LLC
1.8%
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%
|
$76,894,000
4,951,303 shares
|
— | 31 Mar 2021 |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
Company
|
2.3%
|
$58,871,000
3,790,777 shares
|
— | 31 Mar 2021 |
| Logos Global Management LP |
13F
Company
|
1.9%
|
$49,764,000
3,204,392 shares
|
— | 31 Mar 2021 |
| CITADEL ADVISORS LLC |
13F
Company
|
1.9%
|
$48,075,000
3,095,580 shares
|
— | 31 Mar 2021 |
| Vida Ventures Advisors, LLC |
13F
Company
|
1.8%
|
$45,970
2,960,046 shares
|
— | 31 Mar 2021 |
| RA CAPITAL MANAGEMENT, L.P. |
13F
Company
|
1.7%
|
$43,562,000
2,805,045 shares
|
— | 31 Mar 2021 |
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 Q2 2021
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
75
Shares
35,805,078
Rows available
75
| 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 Q2 2021 vs Q1 2021 Across Filers
Q1 2021 holders
72
Q2 2021 holders
75
Holder diff
3
| Investor | Q1 2021 Shares | Q2 2021 Shares | Share Diff | Share Chg % | Q1 2021 value | Q2 2021 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend