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, Q1 2026
Institutional positions in Disc Medicine, Inc. as of Mar 31, 2026. 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
- 203
- +9 vs. Q4 2025
- Shares held
- 41.9M
- +5.37M (+14.7%) vs. Q4 2025
- Total value
- $2.67B
- −$229.0M (−7.9%) vs. Q4 2025
- New holders
- 47
- 81 more added
- Sold out
- 38
- 44 more reduced
3 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Disc Medicine, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Zimmer Partners, LP | 16,700 | $1.07M | 0.03% | −10,800−39.3% | Reduced |
| Teachers Retirement System of the State of Kentucky | 18,993 | $1.21M | 0.01% | +2,837+17.6% | Added |
| Legal & General Group Plc | 19,377 | $1.24M | 0.00% | −4,276−18.1% | Reduced |
| Boothbay Fund Management, LLC | 21,378 | $1.37M | 0.03% | +21,378 | New |
| Algert Global LLC | 22,680 | $1.45M | 0.02% | +22,680 | New |
| Profund Advisors LLC | 23,972 | $1.53M | 0.06% | +10,494+77.9% | Added |
| Deutsche Bank AG | 24,401 | $1.56M | 0.00% | +3,878+18.9% | Added |
| The PNC Financial Services Group, Inc. | 25,292 | $1.62M | 0.00% | +92+0.4% | Added |
| Nantahala Capital Management, LLC | 25,653 | $1.64M | 0.10% | −107,147−80.7% | Reduced |
| Bank of Montreal | 28,773 | $1.84M | 0.00% | +3,947+15.9% | Added |
| Victory Capital Management Inc | 29,218 | $1.87M | 0.00% | −47,120−61.7% | Reduced |
| RTW Investments, LP | 30,000 | $1.92M | 0.02% | 00.0% | Unchanged |
| TD Asset Management Inc | 30,476 | $1.95M | 0.00% | −39,158−56.2% | Reduced |
| Alliancebernstein L.P. | 24,540 | $1.95M | 0.00% | 00.0% | Unchanged |
| Invesco Ltd. | 30,638 | $1.96M | 0.00% | −30,432−49.8% | Reduced |
| Tudor Investment Corp Et Al | 31,002 | $1.98M | 0.01% | −35,123−53.1% | Reduced |
| Alps Advisors Inc | 31,058 | $1.99M | 0.01% | +56+0.2% | Added |
| Squarepoint Ops LLC | 31,709 | $2.03M | 0.00% | +15,955+101.3% | Added |
| Renaissance Technologies LLC | 31,820 | $2.03M | 0.00% | −31,000−49.3% | Reduced |
| Brevan Howard Capital Management LP | 32,406 | $2.04M | 0.02% | −17,307−34.8% | Reduced |
| Manufacturers Life Insurance Company, The | 32,493 | $2.08M | 0.00% | −20,017−38.1% | Reduced |
| Rhumbline Advisers | 33,058 | $2.11M | 0.00% | +3,225+10.8% | Added |
| Barclays PLC | 33,267 | $2.13M | 0.00% | −66,345−66.6% | Reduced |
| California State Teachers Retirement System | 34,382 | $2.20M | 0.00% | +11,126+47.8% | Added |
| XTX Topco Ltd | 34,418 | $2.20M | 0.04% | +11,324+49.0% | Added |
| Seven Grand Managers, LLC | 35,000 | $2.24M | 0.15% | 00.0% | Unchanged |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 38,006 | $2.43M | 0.00% | +10,705+39.2% | Added |
| Lazard Asset Management LLC | 39,400 | $2.52M | 0.00% | −18,653−32.1% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 39,910 | $2.55M | 0.00% | −293−0.7% | Reduced |
| Raymond James Financial Inc | 44,700 | $2.73M | 0.00% | −35,574−44.3% | Reduced |
| Ameriprise Financial Inc | 45,837 | $2.93M | 0.00% | −37,147−44.8% | Reduced |
| Swiss National Bank | 48,000 | $3.07M | 0.00% | 00.0% | Unchanged |
| Schroder Investment Management Group | 50,959 | $3.10M | 0.00% | +856+1.7% | Added |
| HealthInvest Partners AB | 107,255 | $3.19M | 1.03% | +59,288+123.6% | Added |
| Burkehill Global Management, LP | 50,000 | $3.20M | 0.16% | 00.0% | Unchanged |
| Nuveen, LLC | 51,380 | $3.29M | 0.00% | +2,909+6.0% | Added |
| NEXTBio Capital Management LP | 52,655 | $3.37M | 1.56% | +9,877+23.1% | Added |
| Sphera Funds Management Ltd. | 53,538 | $3.42M | 0.59% | +53,538 | New |
| Rafferty Asset Management, LLC | 53,869 | $3.44M | 0.01% | +17,776+49.3% | Added |
| Moore Capital Management, LP | 57,796 | $3.70M | 0.13% | +57,796 | New |
| KVP Capital Advisors, LP | 58,250 | $3.72M | 2.78% | 00.0% | Unchanged |
| Casdin Capital, LLC | 65,000 | $4.16M | 0.31% | +65,000 | New |
| Sio Capital Management, LLC | 65,203 | $4.17M | 0.60% | +7,617+13.2% | Added |
| iA Global Asset Management Inc. | 66,243 | $4.24M | 0.06% | −187−0.3% | Reduced |
| Freestone Grove Partners LP | 68,687 | $4.39M | 0.03% | +68,687 | New |
| Sofinnova Investments, Inc. | 78,320 | $5.01M | 0.25% | −32,690−29.4% | Reduced |
| Jump Financial, LLC | 81,829 | $5.23M | 0.08% | +81,829 | New |
| Millennium Management LLC | 83,259 | $5.32M | 0.00% | −101,520−54.9% | Reduced |
| Morgan Stanley | 94,264 | $6.03M | 0.00% | +19,438+26.0% | Added |
| DnB Asset Management AS | 96,755 | $6.19M | 0.02% | +12,500+14.8% | Added |
| Citadel Advisors LLC | 97,930 | $6.26M | 0.00% | −2,465−2.5% | Reduced |
| UBS Group AG | 98,621 | $6.31M | 0.00% | −17,491−15.1% | Reduced |
| Kennedy Capital Management, Inc. | 108,286 | $6.92M | 0.15% | +98,962+1,061.4% | Added |
| UBS Asset Management Americas Inc | 110,890 | $7.09M | 0.00% | −3,461−3.0% | Reduced |
| Catalio Capital Management, LP | 122,978 | $7.86M | 1.64% | +12,551+11.4% | Added |
| Alyeska Investment Group, L.P. | 125,000 | $7.99M | 0.02% | +75,000+150.0% | Added |
| BNP Paribas Arbitrage, SA | 127,737 | $8.17M | 0.01% | +5,584+4.6% | Added |
| Bain Capital Life Sciences Investors, LLC | 141,234 | $9.03M | 0.81% | +141,234 | New |
| Bank of America Corp | 166,775 | $10.7M | 0.00% | +30,789+22.6% | Added |
| Integral Health Asset Management, LLC | 170,000 | $10.9M | 0.58% | +170,000 | New |
| Ensign Peak Advisors, Inc | 191,487 | $12.2M | 0.02% | +14,437+8.2% | Added |
| Silverarc Capital Management, LLC | 196,028 | $12.5M | 1.48% | +196,028 | New |
| Bank of New York Mellon Corp | 204,968 | $13.1M | 0.00% | +137,261+202.7% | Added |
| Vanguard Fiduciary Trust Co | 217,436 | $13.9M | 0.00% | +217,436 | New |
| Northern Trust Corp | 247,195 | $15.8M | 0.00% | +19,125+8.4% | Added |
| Vanguard Portfolio Management LLC | 247,338 | $15.8M | 0.00% | +247,338 | New |
| Charles Schwab Investment Management Inc | 251,195 | $16.1M | 0.00% | +4,156+1.7% | Added |
| Octagon Capital Advisors LP | 270,000 | $17.3M | 1.91% | +270,000 | New |
| Checkpoint Capital L.P. | 286,661 | $18.3M | 6.58% | −166,331−36.7% | Reduced |
| Loomis Sayles & Co L P | 317,222 | $20.3M | 0.03% | +34,813+12.3% | Added |
| Baker Bros. Advisors LP | 349,657 | $22.4M | 0.13% | +12,607+3.7% | Added |
| Foresite Capital Management V, LLC | 374,069 | $23.9M | 8.83% | +75,000+25.1% | Added |
| Standard Life Aberdeen plc | 375,614 | $24.0M | 0.04% | +141,256+60.3% | Added |
| Pictet Asset Management Holding SA | 387,005 | $24.7M | 0.03% | −7,369−1.9% | Reduced |
| Dimensional Fund Advisors LP | 394,447 | $25.2M | 0.01% | +170,872+76.4% | Added |
| Eventide Asset Management, LLC | 395,572 | $25.3M | 0.42% | +1800.0% | Added |
| Palo Alto Investors LP | 401,719 | $25.7M | 3.93% | +84,263+26.5% | Added |
| Opaleye Management Inc. | 421,000 | $26.9M | 3.55% | +221,000+110.5% | Added |
| Saturn V Capital Management LLC | 449,926 | $28.8M | 5.21% | +151,497+50.8% | Added |
| Bellevue Group AG | 459,314 | $29.4M | 0.70% | +459,314 | New |
| Armistice Capital, LLC | 536,000 | $34.3M | 1.13% | +36,609+7.3% | Added |
| Assenagon Asset Management S.A. | 546,247 | $34.9M | 0.06% | +188,411+52.7% | Added |
| Logos Global Management LP | 560,000 | $35.8M | 1.84% | +50,000+9.8% | Added |
| Jennison Associates LLC | 610,382 | $39.0M | 0.03% | +78,303+14.7% | Added |
| Goldman Sachs Group Inc | 639,842 | $40.9M | 0.01% | −114,353−15.2% | Reduced |
| Deerfield Management Company, L.P. (Series C) | 657,000 | $42.0M | 0.50% | +145,837+28.5% | Added |
| Vestal Point Capital, LP | 700,000 | $44.8M | 1.25% | −35,000−4.8% | Reduced |
| Geode Capital Management, LLC | 744,222 | $47.6M | 0.00% | +59,264+8.7% | Added |
| Woodline Partners LP | 958,281 | $61.3M | 0.23% | +4480.0% | Added |
| Siren, L.L.C. | 988,401 | $63.2M | 1.75% | 00.0% | Unchanged |
| OrbiMed Advisors LLC | 1,067,550 | $68.3M | 1.55% | 00.0% | Unchanged |
| BVF Inc | 1,272,312 | $81.4M | 2.59% | +622,312+95.7% | Added |
| JPMorgan Chase & Co | 1,371,480 | $83.4M | 0.01% | −209,647−13.3% | Reduced |
| TCG Crossover Management, LLC | 1,341,862 | $85.8M | 2.45% | +1,341,862 | New |
| Frazier Life Sciences Management, L.P. | 1,354,852 | $86.6M | 2.23% | +94,852+7.5% | Added |
| Vanguard Capital Management LLC | 1,375,430 | $87.9M | 0.00% | +1,375,430 | New |
| Atlas Venture Life Science Advisors, LLC | 1,513,875 | $96.8M | 12.25% | 00.0% | Unchanged |
| Price T Rowe Associates Inc | 1,549,350 | $99.1M | 0.01% | −148,655−8.8% | Reduced |
| State Street Corp | 1,698,244 | $108.6M | 0.00% | +510,253+43.0% | Added |
| Wellington Management Group LLP | 1,735,376 | $111.0M | 0.02% | +217,102+14.3% | Added |