Renaissance Technologies (RenTech)'s IRON Position Overview
Renaissance Technologies (RenTech) (via Renaissance Technologies LLC (Rentech)) currently holds 62,820 shares of Disc Medicine, Inc. (IRON) worth $4.99 M, representing 0.01% of the portfolio. First purchased in 2022-Q4, this medium-term investment has been held for 12 quarters.
Based on 13F filings, Renaissance Technologies (RenTech) has maintained a strategic position in IRON, demonstrating sustained confidence in this investment. Largest addition occurred in Q1 2025, adding 104,800 shares. Largest reduction occurred in Q2 2025, reducing 94,800 shares.
Analysis based on 13F filings available since 2013 Q2
Renaissance Technologies (RenTech)'s Disc Medicine (IRON) Holding Value Over Time
Track share changes against reported price movement
Quarterly Disc Medicine (IRON) Trades by Renaissance Technologies (RenTech)
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q4 2025 | +56,020 | Add 823.82% | 62,820 | $79.41 |
| Q3 2025 | -89,620 | Reduce 92.95% | 6,800 | $66.08 |
| Q2 2025 | -94,800 | Reduce 49.58% | 96,420 | $52.96 |
| Q1 2025 | +104,800 | Add 121.27% | 191,220 | $49.64 |
| Q4 2024 | +86,420 | New Buy | 86,420 | $63.40 |
| Q2 2024 | -8,520 | Sold Out | 0 | $0.00 |
| Q1 2024 | -39,760 | Reduce 82.35% | 8,520 | $62.21 |
| Q4 2023 | +18,590 | Add 62.61% | 48,280 | $57.77 |
| Q3 2023 | -39,200 | Reduce 56.90% | 29,690 | $46.99 |
| Q2 2023 | +53,620 | Add 351.15% | 68,890 | $0.04 |
| Q1 2023 | +2,300 | Add 17.73% | 15,270 | $0.02 |
| Q4 2022 | +12,970 | New Buy | 12,970 | $0.02 |
Renaissance Technologies (RenTech)'s Disc Medicine Investment FAQs
Renaissance Technologies (RenTech) first purchased Disc Medicine, Inc. (IRON) in Q4 2022, acquiring 12,970 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Renaissance Technologies (RenTech) has held Disc Medicine, Inc. (IRON) for 12 quarters since Q4 2022.
Renaissance Technologies (RenTech)'s largest addition to Disc Medicine, Inc. (IRON) was in Q1 2025, adding 191,220 shares worth $9.49 M.
According to the latest 13F filing for Q4 2025, Renaissance Technologies (RenTech)'s firm, Renaissance Technologies LLC (Rentech), owns 62,820 shares of Disc Medicine, Inc. (IRON), valued at approximately $4.99 M.
As of the Q4 2025 filing, Disc Medicine, Inc. (IRON) represents approximately 0.01% of Renaissance Technologies (RenTech)'s publicly disclosed stock portfolio, making it one of their key holdings.
Renaissance Technologies (RenTech)'s peak holding in Disc Medicine, Inc. (IRON) was 191,220 shares, as reported at the end of Q1 2025.