Disc MedicineIRON
13F holders, Q3 2025 (September 30)168holders +17
25new positions
9sold out
5famous investors
$66.00avg. 13F price*
At the end of Q3 2025, 168 institutions reported holding Disc Medicine Inc. (IRON) in their 13F filings, up 17 from Q2 2025. 25 opened new positions and 9 sold out. The largest holders were FMR LLC ($326.1M), Atlas Venture Life Science Advisors, LLC ($141.6M) and BlackRock, Inc. ($133.4M). 5 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), Ken Griffin (0.0% of Citadel Advisors's portfolio) and Steve Cohen (0.0% of Point72 Asset Management's portfolio).
- Company
- Disc Medicine Inc.
- CUSIP
- 254604101
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 25 | $69.7M |
| Exits | 9 | $39.1M |
All 13F filers, Q2 2025 → Q3 2025: 4,727,091 shares bought and 4,576,243 shares sold, net +150,848 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 168 holders
| FMR LLC | 0.02% | Add +52.0% | 4,935,159 | $326.1M |
| Atlas Venture Life Science Advisors, LLC | 18.81% | Reduce -10.1% | 2,142,617 | $141.6M |
| BlackRock, Inc. | 0.00% | Reduce -1.3% | 2,019,283 | $133.4M |
| Ra Capital Management, L.P. | 1.28% | No change | 1,577,106 | $104.2M |
| Vanguard Group Inc. | 0.00% | Add +3.7% | 1,448,059 | $95.7M |
| Frazier Life Sciences Management, L.P. | 2.86% | Reduce -13.1% | 1,438,534 | $95.1M |
| Orbimed Advisors LLC | 2.24% | No change | 1,415,020 | $93.5M |
| Wellington Management Group LLP | 0.02% | Reduce -1.5% | 1,410,077 | $93.2M |
| T. Rowe Price Associates Inc. | 0.01% | Reduce -12.5% | 1,326,429 | $87.7M |
| State Street Corp. | 0.00% | Add +12.5% | 1,045,597 | $69.1M |
| Deerfield Management Company, L.P. | 1.01% | No change | 919,403 | $60.8M |
| Siren, L.L.C. | 2.36% | Reduce -16.9% | 913,401 | $60.4M |
| Woodline Partners LP | 0.27% | No change | 866,955 | $57.3M |
| JPMorgan Chase & Co. | 0.00% | Reduce -10.8% | 752,879 | $49.8M |
| Geode Capital Management, LLC | 0.00% | Add +4.9% | 628,151 | $41.5M |
| Goldman Sachs Group Inc. | 0.01% | Add +134.3% | 529,081 | $35.0M |
| Vestal Point Capital, LP | 1.50% | Add +257.1% | 500,000 | $33.0M |
| TCG Crossover Management, LLC | 1.51% | No change | 465,257 | $30.7M |
| Logos Global Management LP | 2.94% | Reduce -35.7% | 450,000 | $29.7M |
| Adage Capital Partners Gp, L.L.C. | 0.05% | No change | 450,000 | $29.7M |
| Armistice Capital, LLC | 0.91% | No change | 436,000 | $28.8M |
| Checkpoint Capital L.P. | 9.52% | Add +62.3% | 430,000 | $28.4M |
| First Turn Management, LLC | 3.95% | Add +32.8% | 397,693 | $26.3M |
| Janus Henderson Group PLC | 0.01% | Reduce -76.7% | 361,704 | $23.9M |
| Saturn V Capital Management LP | 4.94% | Reduce -13.9% | 340,897 | $22.5M |
| Balyasny Asset Management L.P. | 0.05% | New | 338,101 | $22.3M |
| Baker Bros. Advisors LP | 0.16% | No change | 337,050 | $22.3M |
| Eventide Asset Management, LLC | 0.33% | Add +0.0% | 308,043 | $20.4M |
| Foresite Capital Management V, LLC | 18.17% | No change | 299,069 | $19.8M |
| Nantahala Capital Management, LLC | 1.18% | No change | 287,800 | $19.0M |
| Sio Capital Management, LLC | 4.76% | No change | 284,787 | $18.8M |
| Paradigm Biocapital Advisors LP | 0.48% | Reduce -79.5% | 247,716 | $16.4M |
| First Light Asset Management, LLC | 1.44% | New | 231,186 | $15.3M |
| Dimensional Fund Advisors LP | 0.00% | Add +19.5% | 230,423 | $15.2M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +11.0% | 226,655 | $15.0M |
| Palo Alto Investors LP | 2.74% | Add +54.0% | 224,300 | $14.8M |
| Northern Trust Corp. | 0.00% | Add +0.2% | 219,489 | $14.5M |
| Catalio Capital Management, LP | 2.65% | Add +606.2% | 216,527 | $14.3M |
| Opaleye Management Inc. | 1.82% | Add +4.0% | 193,773 | $12.8M |
| TimesSquare Capital Management, LLC | 0.17% | New | 182,170 | $12.0M |
| Ensign Peak Advisors, Inc | 0.02% | Add +25.1% | 177,050 | $11.7M |
| UBS Group AG | 0.00% | Add +17.9% | 171,623 | $11.3M |
| Bank of America Corp. | 0.00% | Reduce -4.5% | 161,184 | $10.7M |
| Millennium Management | 0.01% | Add +645.6% | 161,000 | $10.6M |
| Victory Capital Management Inc. | 0.01% | Reduce -24.2% | 149,864 | $9.9M |
| Raymond James Financial Inc. | 0.00% | Add +63.6% | 141,479 | $9.3M |
| Barclays PLC | 0.00% | Add +23.9% | 107,203 | $7.1M |
| Blue Owl Capital Holdings LP | 2.11% | Reduce -16.4% | 102,260 | $6.8M |
| Hudson Bay Capital Management LP | 0.05% | New | 102,185 | $6.8M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -24.8% | 91,380 | $6.0M |
| Zimmer Partners, LP | 0.15% | No change | 90,163 | $6.0M |
| Nicholas Investment Partners, LP | 0.51% | Add +61.6% | 88,003 | $5.8M |
| Ameriprise Financial Inc. | 0.00% | Reduce -38.8% | 74,350 | $4.9M |
| Patient Square Capital LP | 1.31% | No change | 74,000 | $4.9M |
| Schroder Investment Management Group | 0.00% | Reduce -18.5% | 67,196 | $4.4M |
| iA Global Asset Management Inc. | 0.06% | Add +20245.3% | 65,512 | $4.3M |
| Bank of New York Mellon Corp | 0.00% | Reduce -9.4% | 64,800 | $4.3M |
| Exome Asset Management LLC | 2.68% | No change | 61,356 | $4.1M |
| TD Asset Management Inc | 0.00% | Add +11.7% | 59,248 | $3.9M |
| Morgan Stanley | 0.00% | Reduce -49.3% | 56,075 | $3.7M |
| Citadel Advisors | 0.00% | New | 50,394 | $3.3M |
| Nuveen, LLC | 0.00% | Reduce -5.1% | 47,694 | $3.2M |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -8.2% | 47,577 | $3.1M |
| Swiss National Bank | 0.00% | Add +1.6% | 43,600 | $2.9M |
| Y-Intercept (Hong Kong) Ltd | 0.07% | Add +361.4% | 43,287 | $2.9M |
| BNP Paribas Financial Markets | 0.00% | Add +699.7% | 37,610 | $2.5M |
| Rafferty Asset Management, LLC | 0.01% | Add +18.5% | 37,302 | $2.5M |
| Rhumbline Advisers | 0.00% | Reduce -3.5% | 34,490 | $2.3M |
| Susquehanna International Group, LLP | 0.00% | Reduce -57.1% | 32,617 | $2.2M |
| PFM Health Sciences, LP | 0.19% | Add +5.7% | 32,539 | $2.2M |
| Aberdeen Group plc | 0.00% | No change | 32,061 | $2.1M |
| American Century Companies Inc. | 0.00% | New | 27,938 | $1.8M |
| Wells Fargo & Company | 0.00% | Add +20.4% | 27,055 | $1.8M |
| Legal & General Group Plc | 0.00% | Add +4.4% | 25,147 | $1.7M |
| PNC Financial Services Group, Inc. | 0.00% | Add +0.0% | 25,146 | $1.7M |
| Alliancebernstein L.P. | 0.00% | Add +1.7% | 24,540 | $1.6M |
| California State Teachers Retirement System | 0.00% | Add +9.1% | 22,093 | $1.5M |
| New York State Common Retirement Fund | 0.00% | Add +27.5% | 21,490 | $1.4M |
| Invesco Ltd. | 0.00% | Add +27.5% | 21,443 | $1.4M |
| Jane Street Group, LLC | 0.00% | New | 21,274 | $1.4M |
| Deutsche Bank AG | 0.00% | Add +13.0% | 18,886 | $1.2M |
| Prelude Capital Management, LLC | 0.09% | No change | 18,156 | $1.2M |
| Bank of Montreal | 0.00% | Add +61.9% | 17,785 | $1.2M |
| Alps Advisors Inc. | 0.01% | Reduce -9.8% | 16,792 | $1.1M |
| Royal Bank of Canada | 0.00% | Reduce -26.1% | 16,696 | $1.1M |
| Walleye Capital LLC | 0.01% | Add +4.2% | 14,649 | $968K |
| Marshall Wace, LLP | 0.00% | New | 14,001 | $925K |
| AQR Capital Management | 0.00% | Add +2.4% | 13,978 | $924K |
| MetLife Investment Management, LLC | 0.00% | Reduce -6.3% | 13,922 | $920K |
| Fred Alger Management, LLC | 0.00% | New | 13,726 | $907K |
| Sofinnova Investments, Inc. | 0.05% | Add +85.3% | 13,553 | $896K |
| Teachers Retirement System of the State of Kentucky | 0.01% | No change | 12,851 | $849K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -15.9% | 12,646 | $834K |
| State of Wisconsin Investment Board | 0.00% | Reduce -4.0% | 12,373 | $818K |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.00% | Add +55.1% | 11,438 | $756K |
| Legato Capital Management LLC | 0.08% | Add +56.2% | 11,287 | $746K |
| Lion Point Capital, LP | 3.98% | No change | 10,600 | $700K |
| Assenagon Asset Management S.A. | 0.00% | New | 10,433 | $689K |
| Point72 Asset Management | 0.00% | New | 9,226 | $610K |
| State Board of Administration of Florida Retirement System | 0.00% | No change | 9,129 | $603K |
"% of holder's portfolio" is IRON's weight in each manager's 13F, not the share of Disc Medicine Inc. the manager owns.