How many institutions held IRON - Disc Medicine, Inc. - Common Stock, $0.0001 par value per share in Q1 2026?

201 institutional investors reported IRON - Disc Medicine, Inc. - Common Stock, $0.0001 par value per share for Q1 2026. 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 2026 13F Holders as of 31 Mar 2026

Security type / class: Equity / Common Stock, $0.0001 par value per share
Total 13F shares: 41,790,891
Total 13F value: $2,667,822,262
Share change: +3,426,874
Put/Call ratio: 22%
SEC-reported price per share: $63.94
Number of holders: 201
Value change: +$184,842,370
Number of buys: 119
Number of sells: 81
Shares outstanding: 37,778,373

Security key

254604101

Report period

Q1 2026

Institutions

201

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

FMR LLC

Disclosed value leader

FMR LLC

Comparable rows

15/15

Latest evidence

31 Dec 2025

13F 13D/G 3/4/5 Lead comparable stake: 14% 13D/G row: FMR LLC Showing 1-6 of 15 holder rows.

Quick read

FMR LLC leads the comparable SEC ownership view at 14%.

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 FMR LLC's linked filing trail.

Comparable ownership Top 5

FMR LLC 14%

AI DMI LLC 8%

RA CAPITAL MANAGEMENT, L.P. 5.9%

ORBIMED ADVISORS LLC 4.5%

WELLINGTON MANAGEMENT GROUP LLP 4.1%

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
FMR LLC	13F 13D/G Company 13F 13D/G	14% from 13D/G	$432,802,132 5,450,222 shares	—	31 Dec 2025
AI DMI LLC	3/4/5 13D/G 10%+ Owner 3/4/5 13D/G	8% from 13D/G	$226,473,078 2,814,379 shares	-$59,873,462	22 Oct 2025
RA CAPITAL MANAGEMENT, L.P.	13D/G 13F Company 13D/G 13F	5.9%	$177,001,530 2,228,924 shares	$0	30 Dec 2025
ORBIMED ADVISORS LLC	13F 13D/G 3/4/5 Company · Director 13F 13D/G 3/4/5	4.5% from 13D/G	$84,774,146 1,067,550 shares	—	31 Dec 2025
WELLINGTON MANAGEMENT GROUP LLP	13F 13D/G Company 13F 13D/G	4.1% from 13D/G	$120,566,138 1,518,274 shares	—	31 Dec 2025
Paradigm Biocapital Advisors LP	13D/G 13D/G	3.5%	$57,097,283 1,210,971 shares	$0	31 Mar 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 Q1 2026

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

Institutions

201

41,790,891

Rows available

201

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 2026 vs Q1 2026 Across Filers

Q1 2026 holders

201

Q1 2026 holders

201

Holder diff

Investor	Q1 2026 Shares	Q1 2026 Shares	Share Diff	Share Chg %	Q1 2026 value	Q1 2026 value	Value change	Value Chg %

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

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend