Cliff Asness's RGEN Position Overview
Cliff Asness (via Aqr Capital Management LLC) currently holds 8,648 shares of Repligen Corporation (RGEN) worth $1.42 M, representing 0.00% of the portfolio. First purchased in 2013-Q3, this long-term strategic position has been held for 41 quarters.
Based on 13F filings since 2013, Cliff Asness has maintained a long-term strategic position in RGEN, representing a significant commitment to this investment thesis. Largest addition occurred in Q1 2014, adding 125,800 shares. Largest reduction occurred in Q3 2014, reducing 90,200 shares.
Analysis based on 13F filings available since 2013 Q2
Cliff Asness's Repligen Corporation (RGEN) Holding Value Over Time
Track share changes against reported price movement
Quarterly Repligen Corporation (RGEN) Trades by Cliff Asness
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q4 2025 | -568 | Reduce 6.16% | 8,648 | $163.86 |
| Q3 2025 | +9,216 | New Buy | 9,216 | $127.55 |
| Q2 2025 | -2,062 | Sold Out | 0 | $0.00 |
| Q1 2025 | +2,062 | New Buy | 2,062 | $127.24 |
| Q3 2023 | -10,161 | Sold Out | 0 | $0.00 |
| Q2 2023 | +10,161 | New Buy | 10,161 | $141.46 |
| Q1 2022 | -6,601 | Sold Out | 0 | $0.00 |
| Q4 2021 | +89 | Add 1.37% | 6,601 | $264.51 |
| Q3 2021 | -4,441 | Reduce 40.55% | 6,512 | $289.00 |
| Q2 2021 | -2,237 | Reduce 16.96% | 10,953 | $199.58 |
| Q1 2021 | -1,202 | Reduce 8.35% | 13,190 | $192.49 |
| Q4 2020 | +5,290 | Add 58.12% | 14,392 | $189.13 |
| Q3 2020 | -64,802 | Reduce 87.68% | 9,102 | $147.55 |
| Q2 2020 | -15,342 | Reduce 17.19% | 73,904 | $122.31 |
| Q1 2020 | -21,438 | Reduce 19.37% | 89,246 | $96.54 |
| Q4 2019 | -31,463 | Reduce 22.13% | 110,684 | $92.50 |
| Q3 2019 | +7,599 | Add 5.65% | 142,147 | $76.69 |
| Q2 2019 | +17,892 | Add 15.34% | 134,548 | $85.95 |
| Q1 2019 | +17,836 | Add 18.05% | 116,656 | $59.08 |
| Q4 2018 | +18,806 | Add 23.50% | 98,820 | $52.74 |
| Q3 2018 | -6,023 | Reduce 7.00% | 80,014 | $55.47 |
| Q2 2018 | -59,270 | Reduce 40.79% | 86,037 | $47.04 |
| Q1 2018 | -44,500 | Reduce 23.44% | 145,307 | $36.18 |
| Q4 2017 | +31,962 | Add 20.25% | 189,807 | $36.28 |
| Q3 2017 | +84,457 | Add 115.08% | 157,845 | $38.32 |
| Q2 2017 | +35,500 | Add 93.70% | 73,388 | $41.45 |
| Q1 2017 | -8,424 | Reduce 18.19% | 37,888 | $35.21 |
| Q4 2016 | -21,331 | Reduce 31.53% | 46,312 | $30.81 |
| Q3 2016 | +13,382 | Add 24.66% | 67,643 | $30.20 |
| Q2 2016 | -928 | Reduce 1.68% | 54,261 | $27.37 |
| Q1 2016 | +34,692 | Add 169.25% | 55,189 | $26.82 |
| Q4 2015 | -51,824 | Reduce 71.66% | 20,497 | $28.30 |
| Q3 2015 | -23,590 | Reduce 24.60% | 72,321 | $27.85 |
| Q2 2015 | -42,326 | Reduce 30.62% | 95,911 | $41.28 |
| Q1 2015 | -63,505 | Reduce 31.48% | 138,237 | $30.36 |
| Q4 2014 | -85,383 | Reduce 29.74% | 201,742 | $19.80 |
| Q3 2014 | -90,200 | Reduce 23.91% | 287,125 | $19.91 |
| Q2 2014 | -55,700 | Reduce 12.86% | 377,325 | $22.79 |
| Q1 2014 | +125,800 | Add 40.95% | 433,025 | $12.86 |
| Q4 2013 | +81,378 | Add 36.03% | 307,225 | $13.64 |
| Q3 2013 | +225,847 | New Buy | 225,847 | $11.09 |
Cliff Asness's Repligen Corporation Investment FAQs
Cliff Asness first purchased Repligen Corporation (RGEN) in Q3 2013, acquiring 225,847 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Cliff Asness has held Repligen Corporation (RGEN) for 41 quarters since Q3 2013.
Cliff Asness's largest addition to Repligen Corporation (RGEN) was in Q3 2013, adding 225,847 shares worth $2.5 M.
According to the latest 13F filing for Q4 2025, Cliff Asness's firm, Aqr Capital Management LLC, owns 8,648 shares of Repligen Corporation (RGEN), valued at approximately $1.42 M.
As of the Q4 2025 filing, Repligen Corporation (RGEN) represents approximately 0.00% of Cliff Asness's publicly disclosed stock portfolio, making it one of their key holdings.
Cliff Asness's peak holding in Repligen Corporation (RGEN) was 433,025 shares, as reported at the end of Q1 2014.