Citadel Advisors (Ken Griffin) — REGN Trade History
Quarter-by-quarter changes in the REGENERON PHARMACEUTICALS position · CUSIP 75886F107
Currently held · 4.5 YearsFirst seen: 2015 Q4
| Quarter | Filed | Activity | Shares | Δ Shares | Δ % | Value | % Port. |
|---|---|---|---|---|---|---|---|
| 2026 Q2 | 2026-09-02 | Add | 57,604 | 9,917 | +20.8% | $35.9M | 0.00% |
| 2026 Q1 | 2026-05-15 | Reduce | 47,687 | -97,283 | -67.1% | $36.8M | 0.01% |
| 2025 Q4 | 2026-02-17 | Reduce | 144,970 | -85,257 | -37.0% | $111.9M | 0.02% |
| 2025 Q3 | 2025-11-14 | Reduce | 230,227 | -450,278 | -66.2% | $129.4M | 0.02% |
| 2025 Q2 | 2025-08-14 | Add | 680,505 | 605,603 | +808.5% | $357.3M | 0.06% |
| 2025 Q1 | 2025-05-15 | Reduce | 74,902 | -117,444 | -61.1% | $47.5M | 0.01% |
| 2024 Q4 | 2025-02-14 | Add | 192,346 | 122,086 | +173.8% | $137.0M | 0.02% |
| 2024 Q3 | 2024-11-14 | Reduce | 70,260 | -39,296 | -35.9% | $73.9M | 0.01% |
| 2024 Q2 | 2024-08-14 | Add | 109,556 | 30,978 | +39.4% | $115.1M | 0.02% |
| 2024 Q1 | 2024-05-15 | Reduce | 78,578 | -206,013 | -72.4% | $75.6M | 0.01% |
| 2023 Q4 | 2024-02-14 | Add | 284,591 | 220,135 | +341.5% | $250.0M | 0.05% |
| 2023 Q3 | 2023-11-14 | Add | 64,456 | 24,730 | +62.3% | $53.0M | 0.01% |
| 2023 Q2 | 2023-08-14 | Reduce | 39,726 | -251,520 | -86.4% | $28.5M | 0.01% |
| 2023 Q1 | 2023-05-15 | Add | 291,246 | 214,170 | +277.9% | $239.3M | 0.05% |
| 2022 Q4 | 2023-02-14 | Add | 77,076 | 58,926 | +324.7% | $55.6M | 0.01% |
| 2022 Q3 | 2022-11-14 | Add | 18,150 | 8,956 | +97.4% | $12.5M | 0.00% |
| 2022 Q2 | 2022-08-15 | Reduce | 9,194 | -8,803 | -48.9% | $5.4M | 0.00% |
| 2022 Q1 | 2022-05-16 | New | 17,997 | 17,997 | — | $12.6M | 0.00% |
| 2021 Q3 | 2022-03-11 | Sold out | — | -99,920 | -100.0% | — | — |
| 2021 Q4 | 2022-02-14 | Add | 99,920 | 42,152 | +73.0% | $63.1M | 0.01% |
| 2021 Q2 | 2021-08-16 | Add | 57,768 | 38,085 | +193.5% | $32.3M | 0.01% |
| 2021 Q1 | 2021-05-21 | Reduce | 19,683 | -19,338 | -49.6% | $9.3M | 0.00% |
| 2020 Q4 | 2021-02-16 | Add | 39,021 | 23,016 | +143.8% | $18.9M | 0.01% |
| 2020 Q3 | 2020-11-16 | New | 16,005 | 16,005 | — | $9.0M | 0.00% |
| 2020 Q2 | 2020-08-14 | Sold out | — | -23,514 | -100.0% | — | — |
| 2020 Q1 | 2020-05-15 | Reduce | 23,514 | -372,365 | -94.1% | $11.5M | 0.01% |
| 2019 Q4 | 2020-02-14 | New | 395,879 | 395,879 | — | $148.6M | 0.06% |
| 2019 Q2 | 2020-02-14 | — | — | — | — | — | — |
| 2018 Q4 | 2019-11-14 | Sold out | — | -155,361 | -100.0% | — | — |
| 2019 Q3 | 2019-11-14 | New | 155,361 | 155,361 | — | $43.1M | 0.02% |
| 2018 Q2 | 2019-08-14 | — | — | — | — | — | — |
| 2018 Q3 | 2019-05-15 | Sold out | — | -178,390 | -100.0% | — | — |
| 2019 Q1 | 2019-05-15 | New | 178,390 | 178,390 | — | $73.3M | 0.04% |
| 2018 Q1 | 2019-02-14 | Sold out | — | -185,086 | -100.0% | — | — |
| 2017 Q4 | 2018-02-09 | Add | 185,086 | 177,431 | +2317.8% | $69.6M | 0.04% |
| 2017 Q3 | 2017-11-09 | Reduce | 7,655 | -152,085 | -95.2% | $3.4M | 0.00% |
| 2017 Q2 | 2017-08-11 | Add | 159,740 | 53,698 | +50.6% | $78.5M | 0.07% |
| 2017 Q1 | 2017-05-12 | Reduce | 106,042 | -279,618 | -72.5% | $41.1M | 0.04% |
| 2016 Q4 | 2017-02-10 | Add | 385,660 | 384,290 | +28050.4% | $141.6M | 0.14% |
| 2015 Q4 | 2017-01-31 | New | 1,370 | 1,370 | — | $744.0K | 0.00% |
Share counts are split-adjusted. Time held counts consecutive quarters ending with the latest filing; more than ten years shows as ">10 Years".
13F data shows quarter-end positions, is delayed by up to 45 days and covers only long positions in US-listed securities; short positions, most derivatives and non-US assets are not reported.