DISC MEDICINE INC (IRON) Institutional Ownership Changes & 13F Activity
DISC MEDICINE INC (IRON). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Vestal Point Capital, Lp, Orbimed Advisors Llc, Goldman Sachs Group Inc, Opaleye Management Inc., and Price T Rowe Associates Inc.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Manufacturers Life Insurance Company, The | Sell | -4,722 | -14.5% | 27,771 | $2.03M | Q2 2026 | Sep 09, 2026 |
| Citadel Advisors Llc | Buy | +111,378 | +113.7% | 209,308 | $15.31M | Q2 2026 | Sep 02, 2026 |
| California State Teachers Retirement System | Buy | +4,978 | +14.5% | 39,360 | $2.88M | Q2 2026 | Aug 24, 2026 |
| Assenagon Asset Management S.A. | Sell | -162,089 | -29.7% | 384,158 | $28.10M | Q2 2026 | Aug 21, 2026 |
| Palo Alto Investors Lp | Buy | +14,927 | +3.7% | 416,646 | $30.47M | Q2 2026 | Aug 19, 2026 |
| Capstone Investment Advisors, Llc | Sell | -2,910 | -46.4% | 3,355 | $245.38K | Q2 2026 | Aug 17, 2026 |
| Vestal Point Capital, Lp | Buy | +850,000 | +121.4% | 1,550,000 | $113.37M | Q2 2026 | Aug 14, 2026 |
| Orbimed Advisors Llc | Sell | -710,015 | -66.5% | 357,535 | $26.15M | Q2 2026 | Aug 14, 2026 |
| Goldman Sachs Group Inc | Sell | -542,459 | -84.8% | 97,383 | $7.12M | Q2 2026 | Aug 14, 2026 |
| Opaleye Management Inc. | Buy | +434,000 | +103.1% | 855,000 | $62.53M | Q2 2026 | Aug 14, 2026 |
| Price T Rowe Associates Inc | Buy | +326,049 | +21.0% | 1,875,399 | $137.17M | Q2 2026 | Aug 14, 2026 |
| Logos Global Management Lp | Buy | +315,000 | +56.3% | 875,000 | $64.00M | Q2 2026 | Aug 14, 2026 |
| Two Sigma Investments, Lp | Buy | +136,750 | — | 136,750 | $10.00M | Q2 2026 | Aug 14, 2026 |
| Bvf Inc/Il | Sell | -118,700 | -9.3% | 1,153,612 | $84.38M | Q2 2026 | Aug 14, 2026 |
| Trexquant Investment Lp | Buy | +107,699 | — | 107,699 | $7.88M | Q2 2026 | Aug 14, 2026 |
| Bellevue Group Ag | Buy | +100,686 | +21.9% | 560,000 | $40.96M | Q2 2026 | Aug 14, 2026 |
| Hrt Financial Lp | Buy | +90,822 | — | 90,822 | $6.64M | Q2 2026 | Aug 14, 2026 |
| Armistice Capital, Llc | Sell | -76,000 | -14.2% | 460,000 | $33.64M | Q2 2026 | Aug 14, 2026 |
| Saturn V Capital Management Lp | Buy | +74,804 | +16.6% | 524,730 | $38.38M | Q2 2026 | Aug 14, 2026 |
| Ensign Peak Advisors, Inc | Sell | -69,376 | -36.2% | 122,111 | $8.93M | Q2 2026 | Aug 14, 2026 |
| Sofinnova Investments, Inc. | Buy | +67,919 | +86.7% | 146,239 | $10.70M | Q2 2026 | Aug 14, 2026 |
| Loomis Sayles & Co L P | Buy | +64,642 | +20.4% | 381,864 | $27.93M | Q2 2026 | Aug 14, 2026 |
| Exoduspoint Capital Management, Lp | Buy | +51,623 | — | 51,623 | $3.78M | Q2 2026 | Aug 14, 2026 |
| Checkpoint Capital L.P. | Sell | -46,536 | -16.2% | 240,125 | $17.56M | Q2 2026 | Aug 14, 2026 |
| Ameriprise Financial Inc | Buy | +45,874 | — | 45,874 | $3.36M | Q2 2026 | Aug 14, 2026 |
| Squarepoint Ops Llc | Buy | +44,163 | +139.3% | 75,872 | $5.55M | Q2 2026 | Aug 14, 2026 |
| Invesco Ltd. | Buy | +42,057 | — | 42,057 | $3.08M | Q2 2026 | Aug 14, 2026 |
| Catalio Capital Management, Lp | Buy | +36,406 | +29.6% | 159,384 | $11.66M | Q2 2026 | Aug 14, 2026 |
| Bank Of America Corp | Sell | -31,664 | -19.0% | 135,111 | $9.88M | Q2 2026 | Aug 14, 2026 |
| Rafferty Asset Management, Llc | Sell | -27,303 | -50.7% | 26,566 | $1.94M | Q2 2026 | Aug 14, 2026 |
Frequently asked questions about IRON activity
Which institutional owners are buying IRON?
Institutional owners buying IRON include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in IRON activity?
"Buy" means an investor increased their reported position in IRON compared to the prior reporting period. This reflects growing exposure to DISC MEDICINE INC (IRON) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in IRON increasing?
Institutional interest in IRON can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.
Related IRON Institutional Insights
- IRON Overview
- IRON 13F Institutional Holders
- IRON Top Institutional Shareholders
- Healthcare Sector Institutional Ownership
- Healthcare Sector Portfolio Overlap
- Institutional Portfolio Overlap & Shared Holdings
- Most Bought Healthcare Stocks By Institutional Investors
- Most Sold Healthcare Stocks By Institutional Investors
- IRON Insider Trading & SEC Form 4 Activity
- IRON Articles
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