How many institutions held IRON - Disc Medicine, Inc. - Common Stock, $0.0001 par value per share in Q3 2023?

90 institutional investors reported IRON - Disc Medicine, Inc. - Common Stock, $0.0001 par value per share for Q3 2023. 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

Q3 2023 13F Holders as of 30 Sep 2023

Type / Class: Equity / Common Stock, $0.0001 par value per share
Shares outstanding: 37,778,373
Total 13F shares: 19,879,838
Share change: +861,706
Total reported value: $933,957,855
Put/Call ratio: 114%
Price per share: $46.98
Number of holders: 90
Value change: +$42,877,645
Number of buys: 57
Number of sells: 35

Quarterly Holders Quick Answers

What is CUSIP 254604101?
CUSIP 254604101 identifies IRON - Disc Medicine, Inc. - Common Stock, $0.0001 par value per share in SEC institutional holdings data.

Need full ownership history?
Open the full security ownership history page.

Next holder-history checks

These links keep the next click tied to holder verification, nearby quarters, or outside-13F ownership context.

Back to full security ownership history for the broader multi-quarter picture.
Latest 13F filings for newly reported positions across managers.
Latest Schedule 13D/13G reports for ownership changes outside the 13F cadence.
SEC investors directory for manager drilldown.

Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q4 2023
Previous quarter: Q2 2023

Recent filing periods for CUSIP 254604101:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders 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. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
Braden M. Leonard	3/4/5	10%+ Owner	— class O/S missing	5,247,500	$354,993,375	—	26 Oct 2022	3/4/5
Atlas Venture Life Science Advisors, LLC	13F	Company	9.2%	3,461,784	$153,703,210	—	30 Jun 2023	13F
ORBIMED ADVISORS LLC	13F	Company	6%	2,269,637	$100,771,883	—	30 Jun 2023	13F
Novo Holdings A/S	3/4/5 13F	10%+ Owner · Company	2.9% from 13F	1,090,772	$73,790,726	—	28 Jun 2023	3/4/5 13F
Bain Capital Life Sciences Investors, LLC	13F	Company	3.5%	1,332,548	$59,165,131	—	30 Jun 2023	13F
ADAGE CAPITAL PARTNERS GP, L.L.C.	13F	Company	3.1%	1,162,624	$51,620,506	—	30 Jun 2023	13F
PERCEPTIVE ADVISORS LLC	13F	Company	2%	742,838	$32,982,007	—	30 Jun 2023	13F
Frazier Life Sciences Management, L.P.	13F	Company	1.7%	655,000	$29,082,000	—	30 Jun 2023	13F
CITADEL ADVISORS LLC	13F	Company	1.7%	651,320	$28,918,608	—	30 Jun 2023	13F
James B. Tananbaum	3/4/5	Director, 10%+ Owner	— mixed-class rows	428,745 mixed-class rows	$27,837,975	—	04 Oct 2021	3/4/5
VANGUARD GROUP INC	13F	Company	1.5%	559,767	$24,853,654	—	30 Jun 2023	13F
BANK OF AMERICA CORP /DE/	13F	Company	1.5%	558,096	$24,779,462	—	30 Jun 2023	13F
BlackRock Finance, Inc.	13F	Company	1.3%	502,549	$22,313,175	—	30 Jun 2023	13F
JANUS HENDERSON GROUP PLC	13F	Company	1.3%	500,379	$22,216,828	—	30 Jun 2023	13F
5AM Venture Management, LLC	13F	Company	1.3%	488,442	$21,686,825	—	30 Jun 2023	13F
DEERFIELD MANAGEMENT COMPANY, L.P.	13F	Company	1.1%	430,000	$19,092,000	—	30 Jun 2023	13F
Octagon Capital Advisors LP	13F	Company	1.1%	415,000	$18,426,000	—	30 Jun 2023	13F
Rock Springs Capital Management LP	13F	Company	0.96%	363,468	$16,137,979	—	30 Jun 2023	13F
Atlas Venture Opportunity Fund II, L.P.	3/4/5	10%+ Owner	— class O/S missing	218,326	$14,769,754	—	29 Dec 2022	3/4/5
FMR LLC	13F	Company	0.86%	323,054	$14,343,598	—	30 Jun 2023	13F
Assenagon Asset Management S.A.	13F	Company	0.65%	247,400	$10,984,560	—	30 Jun 2023	13F
Foresite Capital Management V, LLC	13F	Company	0.64%	243,513	$10,811,977	—	30 Jun 2023	13F
Ikarian Capital, LLC	13F	Company	0.64%	240,031	$10,657,376	—	30 Jun 2023	13F
Cormorant Asset Management, LP	13F	Company	0.6%	225,000	$9,990,000	—	30 Jun 2023	13F
PRICE T ROWE ASSOCIATES INC /MD/	13F	Company	0.54%	202,670	$8,999,000	—	30 Jun 2023	13F
SPHERA FUNDS MANAGEMENT LTD.	13F	Company	0.45%	170,578	$7,573,663	—	30 Jun 2023	13F
FRANKLIN RESOURCES INC	13F	Company	0.42%	157,255	$6,982,122	—	30 Jun 2023	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.39%	147,055	$6,529,242	—	30 Jun 2023	13F
ACUTA CAPITAL PARTNERS, LLC	13F	Company	0.37%	139,500	$6,193,800	—	30 Jun 2023	13F
STATE STREET CORP	13F	Company	0.37%	139,403	$6,189,493	—	30 Jun 2023	13F
Boxer Capital, LLC	13F	Company	0.34%	130,000	$5,772,000	—	30 Jun 2023	13F
Point72 Asset Management, L.P.	13F	Company	0.33%	125,200	$5,558,880	—	30 Jun 2023	13F
CHI Advisors LLC	13F	Company	0.33%	125,139	$5,556,172	—	30 Jun 2023	13F
Invesco Ltd.	13F	Company	0.29%	110,632	$4,912,061	—	30 Jun 2023	13F
Trustees of Columbia University in the City of New York	13F	Company	0.29%	110,488	$4,905,667	—	30 Jun 2023	13F
DAVIDSON KEMPNER CAPITAL MANAGEMENT LP	13F	Company	0.24%	90,000	$3,982,500	—	30 Jun 2023	13F
NORTHERN TRUST CORP	13F	Company	0.19%	69,975	$3,106,890	—	30 Jun 2023	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	0.18%	68,890	$3,059,000	—	30 Jun 2023	13F
Woodline Partners LP	13F	Company	0.18%	68,146	$3,025,682	—	30 Jun 2023	13F
ExodusPoint Capital Management, LP	13F	Company	0.14%	52,800	$2,344,000	—	30 Jun 2023	13F
Parkman Healthcare Partners LLC	13F	Company	0.13%	50,000	$2,220,000	—	30 Jun 2023	13F
BOOTHBAY FUND MANAGEMENT, LLC	13F	Company	0.13%	48,941	$2,172,980	—	30 Jun 2023	13F
Informed Momentum Co LLC	13F	Company	0.12%	47,206	$2,095,946	—	30 Jun 2023	13F
Monashee Investment Management LLC	13F	Company	0.12%	45,000	$1,998,000	—	30 Jun 2023	13F
MORGAN STANLEY	13F	Company	0.12%	43,530	$1,932,732	—	30 Jun 2023	13F
WELLINGTON MANAGEMENT GROUP LLP	13F	Company	0.11%	43,270	$1,921,188	—	30 Jun 2023	13F
Blackstone Inc.	13F	Company	0.11%	40,866	$1,814,450	—	30 Jun 2023	13F
TWO SIGMA INVESTMENTS, LP	13F	Company	0.11%	40,261	$1,787,588	—	30 Jun 2023	13F
Ensign Peak Advisors, Inc	13F	Company	0.11%	40,000	$1,776,000	—	30 Jun 2023	13F
Walleye Capital LLC	13F	Company	0.09%	35,804	$1,589,698	—	30 Jun 2023	13F

Institutional Holders of Disc Medicine, Inc. - Common Stock, $0.0001 par value per share (IRON) as of Q3 2023

As of 30 Sep 2023, Disc Medicine, Inc. - Common Stock, $0.0001 par value per share (IRON) was held by 90 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 19,879,838 shares. The largest 10 holders included Atlas Venture Life Science Advisors, LLC, ORBIMED ADVISORS LLC, Bain Capital Life Sciences Investors, LLC, ADAGE CAPITAL PARTNERS GP, L.L.C., Paradigm Biocapital Advisors LP, Novo Holdings A/S, PERCEPTIVE ADVISORS LLC, STATE STREET CORP, VANGUARD GROUP INC, and Frazier Life Sciences Management, L.P.. This page lists 90 institutional shareholders reporting positions in this security for the Q3 2023 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q3 2023 vs Q2 2023 Across Filers

Q2 2023 holders

Q3 2023 holders

Holder diff

Investor	Q2 2023 Shares	Q3 2023 Shares	Share Diff	Share Chg %	Q2 2023 Value $	Q3 2023 Value $	Value Diff $	Value Chg %

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

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.