Renaissance Technologies (RenTech)'s XFOR Position Overview
Renaissance Technologies (RenTech) (via Renaissance Technologies LLC) currently holds 18,100 shares of X4 Pharmaceuticals, Inc. (XFOR) worth $84,527, representing 0.00% of the portfolio. First purchased in 2025-Q2, this short-term holding has been held for 4 quarters.
Based on 13F filings, Renaissance Technologies (RenTech) has maintained this position in XFOR for several quarters, showing initial confidence in the investment. Largest addition occurred in Q2 2026, adding 18,100 shares. Largest reduction occurred in Q4 2025, reducing 19,177 shares.
Analysis based on 13F filings available since 2013 Q2
Renaissance Technologies (RenTech)'s X4 Pharmaceuticals (XFOR) Holding Value Over Time
Track share changes against reported price movement
Quarterly X4 Pharmaceuticals (XFOR) Trades by Renaissance Technologies (RenTech)
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q2 2026 | +18,100 | New Buy | 18,100 | $4.67 |
| Q4 2025 | -19,177 | Sold Out | 0 | $0.00 |
| Q3 2025 | +1,811 | Add 10.43% | 19,177 | $3.42 |
| Q2 2025 | +17,366 | New Buy | 17,366 | $1.90 |
Renaissance Technologies (RenTech)'s X4 Pharmaceuticals Investment FAQs
Renaissance Technologies (RenTech) first purchased X4 Pharmaceuticals, Inc. (XFOR) in Q2 2025, acquiring 17,366 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 X4 Pharmaceuticals, Inc. (XFOR) for 4 quarters since Q2 2025.
Renaissance Technologies (RenTech)'s largest addition to X4 Pharmaceuticals, Inc. (XFOR) was in Q2 2026, adding 18,100 shares worth $84,527.
According to the latest 13F filing for Q2 2026, Renaissance Technologies (RenTech)'s firm, Renaissance Technologies LLC, owns 18,100 shares of X4 Pharmaceuticals, Inc. (XFOR), valued at approximately $84,527.
As of the Q2 2026 filing, X4 Pharmaceuticals, Inc. (XFOR) represents approximately 0.00% of Renaissance Technologies (RenTech)'s publicly disclosed stock portfolio, making it one of their key holdings.
Renaissance Technologies (RenTech)'s peak holding in X4 Pharmaceuticals, Inc. (XFOR) was 19,177 shares, as reported at the end of Q3 2025.