Renaissance Technologies (RenTech)'s ACIU Position Overview
Renaissance Technologies (RenTech) (via Renaissance Technologies LLC) currently holds 624,367 shares of AC Immune SA (ACIU) worth $1.72 M, representing 0.00% of the portfolio. First purchased in 2017-Q2, this long-term strategic position has been held for 36 quarters.
Based on 13F filings, Renaissance Technologies (RenTech) has maintained a strategic position in ACIU, demonstrating sustained confidence in this investment. Largest addition occurred in Q1 2020, adding 189,909 shares. Largest reduction occurred in Q1 2021, reducing 152,270 shares.
Analysis based on 13F filings available since 2013 Q2
Renaissance Technologies (RenTech)'s AC Immune (ACIU) Holding Value Over Time
Track share changes against reported price movement
Quarterly AC Immune (ACIU) Trades by Renaissance Technologies (RenTech)
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q1 2026 | -44,500 | Reduce 6.65% | 624,367 | $2.75 |
| Q4 2025 | -101,552 | Reduce 13.18% | 668,867 | $3.14 |
| Q3 2025 | -57,902 | Reduce 6.99% | 770,419 | $2.89 |
| Q2 2025 | +24,852 | Add 3.09% | 828,321 | $2.03 |
| Q1 2025 | +63,271 | Add 8.55% | 803,469 | $1.87 |
| Q4 2024 | +94,191 | Add 14.58% | 740,198 | $2.70 |
| Q3 2024 | -6,072 | Reduce 0.93% | 646,007 | $3.78 |
| Q2 2024 | +136,300 | Add 26.43% | 652,079 | $3.99 |
| Q1 2024 | +98,200 | Add 23.52% | 515,779 | $2.96 |
| Q4 2023 | -7,600 | Reduce 1.79% | 417,579 | $5.00 |
| Q3 2023 | +7,200 | Add 1.72% | 425,179 | $2.85 |
| Q2 2023 | +6,900 | Add 1.68% | 417,979 | $0.00 |
| Q1 2023 | +6,400 | Add 1.58% | 411,079 | $0.00 |
| Q4 2022 | -30,200 | Reduce 6.94% | 404,679 | $0.00 |
| Q3 2022 | -39,711 | Reduce 8.37% | 434,879 | $3.16 |
| Q2 2022 | +22,100 | Add 4.88% | 474,590 | $3.61 |
| Q1 2022 | +10,300 | Add 2.33% | 452,490 | $4.00 |
| Q4 2021 | +17,500 | Add 4.12% | 442,190 | $4.95 |
| Q3 2021 | -1,500 | Reduce 0.35% | 424,690 | $6.71 |
| Q2 2021 | -100 | Reduce 0.02% | 426,190 | $7.93 |
| Q1 2021 | -152,270 | Reduce 26.32% | 426,290 | $7.61 |
| Q4 2020 | -71,651 | Reduce 11.02% | 578,560 | $5.17 |
| Q3 2020 | -135,800 | Reduce 17.28% | 650,211 | $4.88 |
| Q2 2020 | +108,700 | Add 16.05% | 786,011 | $6.73 |
| Q1 2020 | +189,909 | Add 38.96% | 677,311 | $6.91 |
| Q4 2019 | +107,300 | Add 28.23% | 487,402 | $8.52 |
| Q3 2019 | +132,063 | Add 53.24% | 380,102 | $4.95 |
| Q2 2019 | +27,789 | Add 12.62% | 248,039 | $5.55 |
| Q1 2019 | +150,350 | Add 215.09% | 220,250 | $5.05 |
| Q4 2018 | +17,600 | Add 33.65% | 69,900 | $9.46 |
| Q3 2018 | +29,720 | Add 131.62% | 52,300 | $7.99 |
| Q2 2018 | -56,945 | Reduce 71.61% | 22,580 | $9.30 |
| Q1 2018 | +68,325 | Add 610.04% | 79,525 | $10.34 |
| Q4 2017 | +11,200 | New Buy | 11,200 | $12.77 |
| Q3 2017 | -20,100 | Sold Out | 0 | $0.00 |
| Q2 2017 | +20,100 | New Buy | 20,100 | $8.81 |
Renaissance Technologies (RenTech)'s AC Immune Investment FAQs
Renaissance Technologies (RenTech) first purchased AC Immune SA (ACIU) in Q2 2017, acquiring 20,100 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 AC Immune SA (ACIU) for 36 quarters since Q2 2017.
Renaissance Technologies (RenTech)'s largest addition to AC Immune SA (ACIU) was in Q1 2020, adding 677,311 shares worth $4.68 M.
According to the latest 13F filing for Q1 2026, Renaissance Technologies (RenTech)'s firm, Renaissance Technologies LLC, owns 624,367 shares of AC Immune SA (ACIU), valued at approximately $1.72 M.
As of the Q1 2026 filing, AC Immune SA (ACIU) 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 AC Immune SA (ACIU) was 828,321 shares, as reported at the end of Q2 2025.