Renaissance Technologies (RenTech)'s CERS Position Overview
Renaissance Technologies (RenTech) (via Renaissance Technologies LLC) currently holds 578,900 shares of Cerus Corporation (CERS) worth $1.05 M, representing 0.00% of the portfolio. First purchased in 2013-Q2, this long-term strategic position has been held for 41 quarters.
Based on 13F filings since 2013, Renaissance Technologies (RenTech) has maintained a long-term strategic position in CERS, representing a significant commitment to this investment thesis. Largest addition occurred in Q1 2025, adding 953,791 shares. Largest reduction occurred in Q2 2025, reducing 603,900 shares.
Analysis based on 13F filings available since 2013 Q2
Renaissance Technologies (RenTech)'s Cerus Corporation (CERS) Holding Value Over Time
Track share changes against reported price movement
Quarterly Cerus Corporation (CERS) Trades by Renaissance Technologies (RenTech)
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q1 2026 | +80,900 | Add 16.24% | 578,900 | $1.82 |
| Q4 2025 | -341,500 | Reduce 40.68% | 498,000 | $2.06 |
| Q3 2025 | +74,000 | Add 9.67% | 839,500 | $1.59 |
| Q2 2025 | -603,900 | Reduce 44.10% | 765,500 | $1.41 |
| Q1 2025 | +953,791 | Add 229.49% | 1.37 M | $1.39 |
| Q4 2024 | -142,891 | Reduce 25.58% | 415,609 | $1.54 |
| Q3 2024 | +349,000 | Add 166.59% | 558,500 | $1.74 |
| Q2 2024 | -59,800 | Reduce 22.21% | 209,500 | $1.76 |
| Q1 2024 | -4,800 | Reduce 1.75% | 269,300 | $1.89 |
| Q4 2023 | -64,400 | Reduce 19.03% | 274,100 | $2.16 |
| Q3 2023 | -104,800 | Reduce 23.64% | 338,500 | $1.62 |
| Q2 2023 | -321,700 | Reduce 42.05% | 443,300 | $0.00 |
| Q1 2023 | +399,500 | Add 109.30% | 765,000 | $0.00 |
| Q4 2022 | +75,100 | Add 25.86% | 365,500 | $0.00 |
| Q3 2022 | +97,600 | Add 50.62% | 290,400 | $3.60 |
| Q2 2022 | -303,700 | Reduce 61.17% | 192,800 | $5.29 |
| Q1 2022 | -145,973 | Reduce 22.72% | 496,500 | $5.49 |
| Q4 2021 | +532,773 | Add 485.66% | 642,473 | $6.81 |
| Q3 2021 | -312,762 | Reduce 74.03% | 109,700 | $6.09 |
| Q2 2021 | +221,325 | Add 110.04% | 422,462 | $5.91 |
| Q1 2021 | -157,563 | Reduce 43.93% | 201,137 | $6.01 |
| Q4 2020 | +358,700 | New Buy | 358,700 | $6.92 |
| Q1 2020 | -28,266 | Sold Out | 0 | $0.00 |
| Q4 2019 | +28,266 | New Buy | 28,266 | $4.21 |
| Q3 2019 | -57,341 | Sold Out | 0 | $0.00 |
| Q2 2019 | -203,859 | Reduce 78.05% | 57,341 | $5.62 |
| Q1 2019 | +261,200 | New Buy | 261,200 | $6.23 |
| Q4 2018 | -66,100 | Sold Out | 0 | $0.00 |
| Q3 2018 | +66,100 | New Buy | 66,100 | $7.22 |
| Q4 2017 | -560,214 | Sold Out | 0 | $0.00 |
| Q3 2017 | +480,114 | Add 599.39% | 560,214 | $2.73 |
| Q2 2017 | -12,400 | Reduce 13.41% | 80,100 | $2.51 |
| Q1 2017 | +10,500 | Add 12.80% | 92,500 | $4.45 |
| Q4 2016 | +82,000 | New Buy | 82,000 | $4.35 |
| Q3 2016 | -21,400 | Sold Out | 0 | $0.00 |
| Q2 2016 | +2,800 | Add 15.05% | 21,400 | $6.26 |
| Q1 2016 | +18,600 | New Buy | 18,600 | $5.91 |
| Q2 2015 | -136,000 | Sold Out | 0 | $0.00 |
| Q1 2015 | +136,000 | New Buy | 136,000 | $4.17 |
| Q3 2013 | -39,400 | Sold Out | 0 | $0.00 |
| Q2 2013 | +39,400 | Add 0.00% | 39,400 | $4.42 |
Renaissance Technologies (RenTech)'s Cerus Corporation Investment FAQs
Renaissance Technologies (RenTech) first purchased Cerus Corporation (CERS) in Q2 2013, acquiring 39,400 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 Cerus Corporation (CERS) for 41 quarters since Q2 2013.
Renaissance Technologies (RenTech)'s largest addition to Cerus Corporation (CERS) was in Q1 2025, adding 1,369,400 shares worth $1.9 M.
According to the latest 13F filing for Q1 2026, Renaissance Technologies (RenTech)'s firm, Renaissance Technologies LLC, owns 578,900 shares of Cerus Corporation (CERS), valued at approximately $1.05 M.
As of the Q1 2026 filing, Cerus Corporation (CERS) 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 Cerus Corporation (CERS) was 1,369,400 shares, as reported at the end of Q1 2025.