Who Owns Disc Medicine, Inc. (IRON)?Hedge Fund & Institutional Holders

$59.63-0.13 (-0.22%)HealthcareNASDAQ

Institutional Holders

50

as of Q4 2025

Total Institutional Value

$InfinityT

% of Float Held

1.4021166648884432e+290%

QoQ Change in Holders

+5 / -5

Price History

$34.28$49.24$64.19$79.15$94.11Sep 24Jun 25Mar 26

IRON — Biggest New Institutional Buyers This Quarter

FundActionShares AddedValue Added
FMR LLCIncreased+515K+$430.7B
JPMORGAN CHASE & COIncreased+828K+$74.3B
BVF INC/ILNew Position+650K+$51.6B
JENNISON ASSOCIATES LLCNew Position+532K+$42.3B
PERCEPTIVE ADVISORS LLCNew Position+451K+$35.8B
Assenagon Asset Management S.A.Increased+347K+$27.7B
First Light Asset Management, LLCIncreased+292K+$26.3B
Vestal Point Capital, LPIncreased+235K+$25.3B
GOLDMAN SACHS GROUP INCIncreased+225K+$24.0B
WELLINGTON MANAGEMENT GROUP LLPIncreased+108K+$23.8B
LOOMIS SAYLES & CO L PNew Position+282K+$22.0B
GREAT POINT PARTNERS LLCNew Position+250K+$19.9B
Woodline Partners LPIncreased+91K+$18.7B
Siren, L.L.C.Increased+75K+$18.1B
Aberdeen Group plcIncreased+202K+$16.5B

IRON — Institutions Reducing or Closing Positions

FundActionShares SoldValue Sold
TCG Crossover Management, LLCClosed Position-465K-$30.7B
ADAGE CAPITAL PARTNERS GP, L.L.C.Closed Position-450K-$29.7B
JANUS HENDERSON GROUP PLCDecreased-350K-$23.9B
Atlas Venture Life Science Advisors, LLCDecreased-629K-$21.4B
DEERFIELD MANAGEMENT COMPANY, L.P.Decreased-408K-$20.2B
Paradigm Biocapital Advisors LPClosed Position-248K-$16.4B
Sio Capital Management, LLCDecreased-227K-$14.2B
First Turn Management, LLCDecreased-244K-$14.1B
ORBIMED ADVISORS LLCDecreased-347K-$8.7B
Nantahala Capital Management, LLCDecreased-155K-$8.5B
Blue Owl Capital Holdings LPClosed Position-102K-$6.8B
Hudson Bay Capital Management LPClosed Position-102K-$6.8B
Catalio Capital Management, LPDecreased-106K-$5.5B
BALYASNY ASSET MANAGEMENT L.P.Decreased-116K-$5.3B
RAYMOND JAMES FINANCIAL INCDecreased-61K-$4.3B

Top Institutional Holders(Q4 2025)

#FundSharesValue% of PortfolioType
1FMR LLC4,040,359$320.0B0.02%Share
2Atlas Venture Life Science Advisors, LLC1,513,875$120.2B13.90%Share
3FMR LLC1,289,625$102.0B0.01%Share
4Frazier Life Sciences Management, L.P.1,260,000$100.1B2.69%Share
5JPMORGAN CHASE & CO1,163,435$92.0B0.01%Share
6WELLINGTON MANAGEMENT GROUP LLP1,100,735$87.0B0.02%Share
7ORBIMED ADVISORS LLC1,067,550$84.8B1.73%Share
8Siren, L.L.C.988,401$78.5B2.34%Share
9Woodline Partners LP957,833$76.0B0.29%Share
10Vestal Point Capital, LP735,000$58.4B1.98%Share
11GOLDMAN SACHS GROUP INC727,930$57.0B0.01%Share
12BVF INC/IL650,000$51.6B1.74%Share
13JENNISON ASSOCIATES LLC532,079$42.3B0.03%Share
14First Light Asset Management, LLC523,167$41.5B3.18%Share
15DEERFIELD MANAGEMENT COMPANY, L.P.511,163$40.6B0.52%Share
16Logos Global Management LP510,000$40.5B2.45%Share
17Checkpoint Capital L.P.452,992$36.0B11.24%Share
18PERCEPTIVE ADVISORS LLC450,743$35.8B0.64%Share
19EVENTIDE ASSET MANAGEMENT, LLC395,392$31.4B0.49%Share
20JPMORGAN CHASE & CO379,289$30.0B0.00%Share
21Assenagon Asset Management S.A.357,836$28.4B0.04%Share
22BAKER BROS. ADVISORS LP337,050$26.8B0.16%Share
23Saturn V Capital Management LP298,429$23.7B4.35%Share
24GREAT POINT PARTNERS LLC250,000$19.9B6.44%Share
25CHARLES SCHWAB INVESTMENT MANAGEMENT INC247,039$19.0B0.00%Share
26Aberdeen Group plc234,358$18.6B0.03%Share
27WELLINGTON MANAGEMENT GROUP LLP232,600$18.0B0.00%Share
28LOOMIS SAYLES & CO L P230,574$18.0B0.02%Share
29BALYASNY ASSET MANAGEMENT L.P.221,761$17.0B0.02%Share
30NORTHERN TRUST CORP205,954$16.0B0.00%Share
31DIMENSIONAL FUND ADVISORS LP197,886$15.0B0.00%Share
32TimesSquare Capital Management, LLC187,777$14.9B0.22%Share
33Ensign Peak Advisors, Inc177,050$14.0B0.02%Share
34MILLENNIUM MANAGEMENT LLC184,779$14.0B0.01%Share
35First Turn Management, LLC153,206$12.2B1.39%Share
36Nantahala Capital Management, LLC132,800$10.5B0.35%Share
37Sofinnova Investments, Inc.111,010$8.8B0.38%Share
38Catalio Capital Management, LP110,427$8.8B1.55%Share
39UBS Group AG107,718$8.6B0.00%Share
40BANK OF AMERICA CORP /DE/93,840$7.0B0.00%Share
41BARCLAYS PLC91,502$7.0B0.00%Share
42VICTORY CAPITAL MANAGEMENT INC76,338$6.0B0.00%Share
43FMR LLC79,851$6.0B0.00%Share
44AMERIPRISE FINANCIAL INC82,984$6.0B0.00%Share
45WELLINGTON MANAGEMENT GROUP LLP86,720$6.0B0.00%Share
46Patient Square Capital LP74,000$5.9B1.26%Share
47RAYMOND JAMES FINANCIAL INC76,300$5.0B0.00%Share
48CITADEL ADVISORS LLC70,789$5.0B0.00%Share
49TD ASSET MANAGEMENT INC69,634$5.0B0.00%Share
50Sio Capital Management, LLC57,586$4.6B0.72%Share

IRON Institutional Ownership History

QuarterHoldersTotal ValueChange
Q4 2025194$2.0T+55
Q3 2025139$1.4T+11
Q2 2025128$1.2T-29
Q1 2025157$1.3T+7
Q4 2024150$1.6T+37
Q3 2024113$6.7T+9
Q2 2024104$6.2T-10
Q1 2024114$784.1T—

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As of Q4 2025, 50 institutional investors hold IRON (Disc Medicine, Inc.). The largest holder is FMR LLC with $320.0B in shares. This quarter, 5 institutions opened new positions and 5 closed their positions.

Frequently Asked Questions

How many hedge funds own IRON?

As of Q4 2025, 50 institutional investors report holding IRON (Disc Medicine, Inc.) in their 13F filings.

Who is the largest institutional holder of IRON?

The largest institutional holder of IRON is FMR LLC with $320.0B in shares.

Is institutional ownership of IRON increasing or decreasing?

This quarter, 5 institutions opened new positions in IRON and 5 closed their positions.