How many institutions held IRON - Disc Medicine, Inc. - Common Stock, $0.0001 par value per share in Q1 2025?

155 institutional investors reported IRON - Disc Medicine, Inc. - Common Stock, $0.0001 par value per share for Q1 2025. Use the holders table for investor-level position and value details.

Disc Medicine, Inc. - Common Stock, $0.0001 par value per share (IRON)

Q: What does CUSIP 254604101 represent in this 13F holders report?

CUSIP 254604101 is the security identifier for IRON - Disc Medicine, Inc. - Common Stock, $0.0001 par value per share used to aggregate holder disclosures.

CUSIP: 254604101

Q1 2025 13F Holders as of 31 Mar 2025

Security type / class: Equity / Common Stock, $0.0001 par value per share
Total 13F shares: 33,154,047
Total 13F value: $1,649,828,469
Share change: +6,503,901
Put/Call ratio: 21%
SEC-reported price per share: $49.64
Number of holders: 155
Value change: +$313,979,403
Number of buys: 98
Number of sells: 51
Shares outstanding: 37,778,373

Security key

254604101

Report period

Q1 2025

Institutions

155

Top holders

IRON full security history Ownership snapshot Full 13F holder table Newer quarter: Q2 2026 Disc Medicine, Inc. SEC filings Disc Medicine, Inc. company facts

Broader feeds

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

Reporting periods

Holder history for CUSIP 254604101

Newer quarter: Q2 2026

Recent filing periods:

Q2 2026

Ownership snapshot

Top reported holders of IRON - Disc Medicine, Inc. - Common Stock, $0.0001 par value per share (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

ORBIMED ADVISORS LLC

Disclosed value leader

Atlas Venture Life Scienc...

Comparable rows

15/15

Latest evidence

31 Dec 2024

13F 13D/G 3/4/5 Lead comparable stake: 4.5% 13D/G row: ORBIMED ADVISORS LLC Showing 1-6 of 15 holder rows.

Quick read

ORBIMED ADVISORS LLC leads the comparable SEC ownership view at 4.5%.

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 ORBIMED ADVISORS LLC's linked filing trail.

Comparable ownership Top 5

ORBIMED ADVISORS LLC 4.5%

Paradigm Biocapital Advisors LP 3.5%

Bain Capital Life Sciences Opport... 3.3%

Atlas Venture Life Science Adviso... 6.6%

FMR LLC 4.9%

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
ORBIMED ADVISORS LLC	13F 13D/G 3/4/5 Company · Director 13F 13D/G 3/4/5	4.5% from 13D/G	$113,205,201 1,785,571 shares	—	31 Dec 2024
Paradigm Biocapital Advisors LP	13F 13D/G Company 13F 13D/G	3.5% from 13D/G	$94,955,448 1,497,720 shares	—	31 Dec 2024
Bain Capital Life Sciences Opportunities III, LP	13D/G 13D/G	3.3%	$46,372,025 983,500 shares	$0	31 Dec 2024
Atlas Venture Life Science Advisors, LLC	13F Company 13F	6.6%	$159,099,510 2,509,456 shares	—	31 Dec 2024
FMR LLC	13F Company 13F	4.9%	$118,320,123 1,866,248 shares	—	31 Dec 2024
BlackRock, Inc.	13F Company 13F	4.9%	$117,907,008 1,859,732 shares	—	31 Dec 2024

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 2025

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

Institutions

155

33,154,047

Rows available

155

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 2025 vs Q1 2025 Across Filers

Q1 2025 holders

155

Q1 2025 holders

155

Holder diff

Investor	Q1 2025 Shares	Q1 2025 Shares	Share Diff	Share Chg %	Q1 2025 value	Q1 2025 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend