What does CUSIP 26818M108 represent in this 13F holders report?

CUSIP 26818M108 is the security identifier for DYN - Dyne Therapeutics, Inc. - COMMON STOCK, $0.0001 PAR VALUE used to aggregate holder disclosures.

How many institutions held DYN - Dyne Therapeutics, Inc. - COMMON STOCK, $0.0001 PAR VALUE in Q4 2020?

67 institutional investors reported DYN - Dyne Therapeutics, Inc. - COMMON STOCK, $0.0001 PAR VALUE for Q4 2020. Use the holders table for investor-level position and value details.

Dyne Therapeutics, Inc. - COMMON STOCK, $0.0001 PAR VALUE (DYN)

CUSIP: 26818M108

Q4 2020 13F Holders as of 31 Dec 2020

Security type / class: Equity / COMMON STOCK, $0.0001 PAR VALUE
Total 13F shares: 26,339,155
Total 13F value: $552,433,805
Share change: +1,329,703
SEC-reported price per share: $21.00
Number of holders: 67
Value change: +$28,795,524
Number of buys: 43
Number of sells: 22
Shares outstanding: 186,643,708

Security key

26818M108

Report period

Q4 2020

Institutions

Top holders

DYN full security history Ownership snapshot Full 13F holder table Dyne Therapeutics, Inc. SEC filings Dyne Therapeutics, Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Ownership snapshot

Top reported holders of DYN - Dyne Therapeutics, Inc. - COMMON STOCK, $0.0001 PAR VALUE (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

30 Sep 2020

13F Lead comparable stake: 2.7% Showing 1-6 of 15 holder rows.

Quick read

MPM ASSET MANAGEMENT LLC leads the comparable SEC ownership view at 2.7%.

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 2.7%

CITADEL ADVISORS LLC 1.6%

Vida Ventures Advisors, LLC 1.6%

RA CAPITAL MANAGEMENT, L.P. 1.5%

WELLINGTON MANAGEMENT GROUP LLP 1.4%

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 13F	2.7%	$99,967,000 4,951,303 shares	—	30 Sep 2020
CITADEL ADVISORS LLC	13F Company 13F	1.6%	$59,932,000 2,968,393 shares	—	30 Sep 2020
Vida Ventures Advisors, LLC	13F Company 13F	1.6%	$59,764 2,960,046 shares	—	30 Sep 2020
RA CAPITAL MANAGEMENT, L.P.	13F Company 13F	1.5%	$56,634,000 2,805,045 shares	—	30 Sep 2020
WELLINGTON MANAGEMENT GROUP LLP	13F Company 13F	1.4%	$49,861,000 2,542,760 shares	—	30 Sep 2020
FRANKLIN RESOURCES INC	13F Company 13F	0.94%	$35,283,000 1,747,557 shares	—	30 Sep 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 Q4 2020

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

26,339,155

Rows available

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 Q4 2020 vs Q3 2020 Across Filers

Q3 2020 holders

Q4 2020 holders

Holder diff

Investor	Q3 2020 Shares	Q4 2020 Shares	Share Diff	Share Chg %	Q3 2020 value	Q4 2020 value	Value change	Value Chg %