Renaissance Technologies (RenTech)'s INSM Position Overview
Renaissance Technologies (RenTech) (via Renaissance Technologies LLC) currently holds 553,987 shares of Insmed Incorporated (INSM) worth $63.23 M, representing 0.09% of the portfolio. First purchased in 2014-Q2, this long-term strategic position has been held for 22 quarters.
Based on 13F filings, Renaissance Technologies (RenTech) has maintained a strategic position in INSM, demonstrating sustained confidence in this investment. Largest addition occurred in Q3 2026, adding 553,987 shares. Largest reduction occurred in Q4 2025, reducing 326,987 shares.
Analysis based on 13F filings available since 2013 Q2
Renaissance Technologies (RenTech)'s Insmed Incorporated (INSM) Holding Value Over Time
Track share changes against reported price movement
Quarterly Insmed Incorporated (INSM) Trades by Renaissance Technologies (RenTech)
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q3 2026 | +553,987 | New Buy | 553,987 | $114.14 |
| Q2 2026 | -20,300 | Sold Out | 0 | $0.00 |
| Q1 2026 | -5,600 | Reduce 21.62% | 20,300 | $163.52 |
| Q4 2025 | -326,987 | Reduce 92.66% | 25,900 | $174.04 |
| Q3 2025 | +44,200 | Add 14.32% | 352,887 | $144.01 |
| Q2 2025 | +308,687 | New Buy | 308,687 | $100.64 |
| Q1 2025 | -25,287 | Sold Out | 0 | $0.00 |
| Q4 2024 | +25,287 | New Buy | 25,287 | $69.04 |
| Q2 2024 | -133,987 | Sold Out | 0 | $0.00 |
| Q1 2024 | +133,987 | New Buy | 133,987 | $27.13 |
| Q1 2023 | -27,300 | Sold Out | 0 | $0.00 |
| Q4 2022 | +27,300 | New Buy | 27,300 | $0.02 |
| Q1 2018 | -36,487 | Sold Out | 0 | $0.00 |
| Q4 2017 | -19,400 | Reduce 34.71% | 36,487 | $31.19 |
| Q3 2017 | +55,887 | New Buy | 55,887 | $31.21 |
| Q1 2017 | -120,500 | Sold Out | 0 | $0.00 |
| Q4 2016 | -77,200 | Reduce 39.05% | 120,500 | $13.23 |
| Q3 2016 | +48,400 | Add 32.42% | 197,700 | $14.52 |
| Q2 2016 | -34,487 | Reduce 18.76% | 149,300 | $9.86 |
| Q1 2016 | +183,787 | New Buy | 183,787 | $12.67 |
| Q3 2014 | -48,587 | Sold Out | 0 | $0.00 |
| Q2 2014 | +48,587 | New Buy | 48,587 | $19.98 |
Renaissance Technologies (RenTech)'s Insmed Incorporated Investment FAQs
Renaissance Technologies (RenTech) first purchased Insmed Incorporated (INSM) in Q2 2014, acquiring 48,587 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 Insmed Incorporated (INSM) for 22 quarters since Q2 2014.
Renaissance Technologies (RenTech)'s largest addition to Insmed Incorporated (INSM) was in Q3 2026, adding 553,987 shares worth $63.23 M.
According to the latest 13F filing for Q3 2026, Renaissance Technologies (RenTech)'s firm, Renaissance Technologies LLC, owns 553,987 shares of Insmed Incorporated (INSM), valued at approximately $63.23 M.
As of the Q3 2026 filing, Insmed Incorporated (INSM) represents approximately 0.09% of Renaissance Technologies (RenTech)'s publicly disclosed stock portfolio, making it one of their key holdings.
Renaissance Technologies (RenTech)'s peak holding in Insmed Incorporated (INSM) was 553,987 shares, as reported at the end of Q3 2026.