Disc Medicine, Inc.
IRON- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001816736
In the last 90 days, Disc Medicine, Inc. insiders filed 0 open-market purchases and 9 sales; 216 institutions reported holding it in 13F filings for Q2 2026, worth $3.13B in total; no superinvestor holds it.
13F holders, Q3 2025
Institutional positions in Disc Medicine, Inc. as of Sep 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 168
- +16 vs. Q2 2025
- Shares held
- 34.2M
- +150.8K (+0.4%) vs. Q2 2025
- Total value
- $2.26B
- +$457.0M (+25.3%) vs. Q2 2025
- New holders
- 25
- 62 more added
- Sold out
- 9
- 45 more reduced
Compare with Q2 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting IRON on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 216 | $3.13B |
| Q1 2026 | 203 | $2.67B |
| Q4 2025 | 197 | $3.04B |
| Q3 2025 | 168 | $2.26B |
| Q2 2025 | 152 | $1.80B |
| Q1 2025 | 157 | $1.65B |
| Q4 2024 | 152 | $1.68B |
| Q3 2024 | 132 | $1.35B |
| Q2 2024 | 121 | $1.24B |
| Q1 2024 | 130 | $1.38B |
| Q4 2023 | 112 | $1.17B |
| Q3 2023 | 91 | $934.0M |
| Q2 2023 | 90 | $848.7M |
| Q1 2023 | 45 | $309.6M |
| Q4 2022 | 35 | $215.8M |
| Q3 2022 | 44 | $43.9M |
| Q2 2022 | 51 | $43.8M |
| Q1 2022 | 57 | $39.6M |
| Q4 2021 | 62 | $93.8M |
| Q3 2021 | 62 | $103.5M |
| Q2 2021 | 55 | $165.3M |
| Q1 2021 | 49 | $346.6M |
Institutions, Q3 2025
Shares, value and share of portfolio for each institution holding Disc Medicine, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Rafferty Asset Management, LLC | 37,302 | $2.46M | 0.01% | +5,813+18.5% | Added |
| BNP Paribas Arbitrage, SA | 37,610 | $2.49M | 0.00% | +32,907+699.7% | Added |
| Y-Intercept (Hong Kong) Ltd | 43,287 | $2.86M | 0.07% | +33,905+361.4% | Added |
| Swiss National Bank | 43,600 | $2.88M | 0.00% | +700+1.6% | Added |
| Manufacturers Life Insurance Company, The | 47,577 | $3.14M | 0.00% | −4,259−8.2% | Reduced |
| Nuveen, LLC | 47,694 | $3.15M | 0.00% | −2,576−5.1% | Reduced |
| HealthInvest Partners AB | 45,690 | $3.21M | 1.19% | +21,038+85.3% | Added |
| Citadel Advisors LLC | 50,394 | $3.33M | 0.00% | +50,394 | New |
| Morgan Stanley | 56,075 | $3.71M | 0.00% | −54,604−49.3% | Reduced |
| TD Asset Management Inc | 59,248 | $3.92M | 0.00% | +6,200+11.7% | Added |
| Exome Asset Management LLC | 61,356 | $4.05M | 2.68% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 64,800 | $4.28M | 0.00% | −6,702−9.4% | Reduced |
| iA Global Asset Management Inc. | 65,512 | $4.33M | 0.06% | +65,190+20,245.3% | Added |
| Schroder Investment Management Group | 67,196 | $4.37M | 0.00% | −15,255−18.5% | Reduced |
| Patient Square Capital LP | 74,000 | $4.89M | 1.31% | 00.0% | Unchanged |
| Ameriprise Financial Inc | 74,350 | $4.91M | 0.00% | −47,170−38.8% | Reduced |
| Nicholas Investment Partners, LP | 88,003 | $5.82M | 0.44% | +33,558+61.6% | Added |
| Zimmer Partners, LP | 90,163 | $5.96M | 0.15% | 00.0% | Unchanged |
| UBS Asset Management Americas Inc | 91,380 | $6.04M | 0.00% | −30,204−24.8% | Reduced |
| Hudson Bay Capital Management LP | 102,185 | $6.75M | 0.04% | +102,185 | New |
| Blue Owl Capital Holdings LP | 102,260 | $6.76M | 2.10% | −20,000−16.4% | Reduced |
| Barclays PLC | 107,203 | $7.08M | 0.00% | +20,645+23.9% | Added |
| Raymond James Financial Inc | 141,479 | $9.35M | 0.00% | +54,992+63.6% | Added |
| Victory Capital Management Inc | 149,864 | $9.90M | 0.01% | −47,960−24.2% | Reduced |
| Millennium Management LLC | 161,000 | $10.6M | 0.01% | +139,407+645.6% | Added |
| Bank of America Corp | 161,184 | $10.7M | 0.00% | −7,638−4.5% | Reduced |
| UBS Group AG | 171,623 | $11.3M | 0.00% | +26,074+17.9% | Added |
| Ensign Peak Advisors, Inc | 177,050 | $11.7M | 0.02% | +35,505+25.1% | Added |
| TimesSquare Capital Management, LLC | 182,170 | $12.0M | 0.17% | +182,170 | New |
| Opaleye Management Inc. | 193,773 | $12.8M | 1.81% | +7,355+3.9% | Added |
| Catalio Capital Management, LP | 216,527 | $14.3M | 2.65% | +185,866+606.2% | Added |
| Northern Trust Corp | 219,489 | $14.5M | 0.00% | +394+0.2% | Added |
| Palo Alto Investors LP | 224,300 | $14.8M | 2.74% | +78,609+54.0% | Added |
| Charles Schwab Investment Management Inc | 226,655 | $15.0M | 0.00% | +22,414+11.0% | Added |
| Dimensional Fund Advisors LP | 230,423 | $15.2M | 0.00% | +37,567+19.5% | Added |
| First Light Asset Management, LLC | 231,186 | $15.3M | 1.44% | +231,186 | New |
| Paradigm Biocapital Advisors LP | 247,716 | $16.4M | 0.48% | −963,255−79.5% | Reduced |
| Sio Capital Management, LLC | 284,787 | $18.8M | 4.76% | 00.0% | Unchanged |
| Nantahala Capital Management, LLC | 287,800 | $19.0M | 1.17% | 00.0% | Unchanged |
| Foresite Capital Management V, LLC | 299,069 | $19.8M | 18.17% | 00.0% | Unchanged |
| Eventide Asset Management, LLC | 308,043 | $20.4M | 0.33% | +130.0% | Added |
| Baker Bros. Advisors LP | 337,050 | $22.3M | 0.16% | 00.0% | Unchanged |
| Balyasny Asset Management LLC | 338,101 | $22.3M | 0.05% | +338,101 | New |
| Saturn V Capital Management LLC | 340,897 | $22.5M | 4.94% | −55,218−13.9% | Reduced |
| Janus Henderson Group PLC | 361,704 | $23.9M | 0.01% | −1,192,257−76.7% | Reduced |
| First Turn Management, LLC | 397,693 | $26.3M | 3.95% | +98,229+32.8% | Added |
| Checkpoint Capital L.P. | 430,000 | $28.4M | 9.52% | +165,000+62.3% | Added |
| Armistice Capital, LLC | 436,000 | $28.8M | 0.90% | 00.0% | Unchanged |
| Logos Global Management LP | 450,000 | $29.7M | 2.94% | −250,000−35.7% | Reduced |
| Adage Capital Partners GP, L.L.C. | 450,000 | $29.7M | 0.05% | 00.0% | Unchanged |
| TCG Crossover Management, LLC | 465,257 | $30.7M | 1.51% | 00.0% | Unchanged |
| Vestal Point Capital, LP | 500,000 | $33.0M | 1.50% | +360,000+257.1% | Added |
| Goldman Sachs Group Inc | 529,081 | $35.0M | 0.01% | +303,225+134.3% | Added |
| Geode Capital Management, LLC | 628,151 | $41.5M | 0.00% | +29,562+4.9% | Added |
| JPMorgan Chase & Co | 752,879 | $49.8M | 0.00% | −90,737−10.8% | Reduced |
| Woodline Partners LP | 866,955 | $57.3M | 0.27% | 00.0% | Unchanged |
| Siren, L.L.C. | 913,401 | $60.4M | 2.36% | −186,000−16.9% | Reduced |
| Deerfield Management Company, L.P. (Series C) | 919,403 | $60.8M | 0.93% | 00.0% | Unchanged |
| State Street Corp | 1,045,597 | $69.1M | 0.00% | +115,829+12.5% | Added |
| Price T Rowe Associates Inc | 1,326,429 | $87.7M | 0.01% | −189,196−12.5% | Reduced |
| Wellington Management Group LLP | 1,410,077 | $93.2M | 0.02% | −22,013−1.5% | Reduced |
| OrbiMed Advisors LLC | 1,415,020 | $93.5M | 2.24% | 00.0% | Unchanged |
| Frazier Life Sciences Management, L.P. | 1,438,534 | $95.1M | 2.85% | −216,300−13.1% | Reduced |
| Vanguard Group Inc | 1,448,059 | $95.7M | 0.00% | +51,323+3.7% | Added |
| Ra Capital Management, L.P. | 1,577,106 | $104.2M | 1.28% | 00.0% | Unchanged |
| BlackRock, Inc. | 2,019,283 | $133.4M | 0.00% | −25,544−1.2% | Reduced |
| Atlas Venture Life Science Advisors, LLC | 2,142,617 | $141.6M | 18.81% | −241,839−10.1% | Reduced |
| FMR LLC | 4,935,159 | $326.1M | 0.02% | +1,689,449+52.1% | Added |
| Bain Capital Life Sciences Investors, LLC | 0 | $0 | 0.00% | −583,500−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −57,945−100.0% | Sold out |
| Bollard Group LLC | 0 | $0 | 0.00% | −30,635−100.0% | Sold out |
| Voloridge Investment Management, LLC | 0 | $0 | 0.00% | −19,726−100.0% | Sold out |
| Harvest Investment Services, LLC | 0 | $0 | 0.00% | −14,316−100.0% | Sold out |
| UBS Oconnor LLC | 0 | $0 | 0.00% | −12,317−100.0% | Sold out |
| First Trust Advisors LP | 0 | $0 | 0.00% | −10,246−100.0% | Sold out |
| HighVista Strategies LLC | 0 | $0 | 0.00% | −6,733−100.0% | Sold out |
| Meeder Asset Management Inc | 0 | $0 | 0.00% | −2,244−100.0% | Sold out |