Citadel Advisors (Ken Griffin) — RARE Trade History
Quarter-by-quarter changes in the ULTRAGENYX PHARMACEUTICAL IN position · CUSIP 90400D108
Currently held · 4.5 YearsFirst seen: 2015 Q4
| Quarter | Filed | Activity | Shares | Δ Shares | Δ % | Value | % Port. |
|---|---|---|---|---|---|---|---|
| 2026 Q2 | 2026-09-02 | Reduce | 210,531 | -1,904,960 | -90.0% | $7.0M | 0.00% |
| 2026 Q1 | 2026-05-15 | Reduce | 2,115,491 | -210,634 | -9.1% | $44.3M | 0.01% |
| 2025 Q4 | 2026-02-17 | Add | 2,326,125 | 1,995,172 | +602.9% | $53.5M | 0.01% |
| 2025 Q3 | 2025-11-14 | Add | 330,953 | 293,326 | +779.6% | $10.0M | 0.00% |
| 2025 Q2 | 2025-08-14 | Reduce | 37,627 | -218,922 | -85.3% | $1.4M | — |
| 2025 Q1 | 2025-05-15 | Reduce | 256,549 | -29,630 | -10.4% | $9.3M | 0.00% |
| 2024 Q4 | 2025-02-14 | Add | 286,179 | 238,226 | +496.8% | $12.0M | 0.00% |
| 2024 Q3 | 2024-11-14 | Reduce | 47,953 | -125,995 | -72.4% | $2.7M | 0.00% |
| 2024 Q2 | 2024-08-14 | Reduce | 173,948 | -119,357 | -40.7% | $7.1M | 0.00% |
| 2024 Q1 | 2024-05-15 | Add | 293,305 | 93,251 | +46.6% | $13.7M | 0.00% |
| 2023 Q4 | 2024-02-14 | Add | 200,054 | 198,653 | +14179.4% | $9.6M | 0.00% |
| 2023 Q3 | 2023-11-14 | Reduce | 1,401 | -275,282 | -99.5% | $49.9K | — |
| 2023 Q2 | 2023-08-14 | Reduce | 276,683 | -281,133 | -50.4% | $12.8M | 0.00% |
| 2023 Q1 | 2023-05-15 | Add | 557,816 | 337,840 | +153.6% | $22.4M | 0.01% |
| 2022 Q4 | 2023-02-14 | Add | 219,976 | 36,970 | +20.2% | $10.2M | 0.00% |
| 2022 Q3 | 2022-11-14 | Reduce | 183,006 | -834,297 | -82.0% | $7.6M | 0.00% |
| 2022 Q2 | 2022-08-15 | Reduce | 1,017,303 | -297,729 | -22.6% | $60.7M | 0.02% |
| 2022 Q1 | 2022-05-16 | New | 1,315,032 | 1,315,032 | — | $95.5M | 0.02% |
| 2021 Q3 | 2022-03-11 | Sold out | — | -1,443,447 | -100.0% | — | — |
| 2021 Q4 | 2022-02-14 | Reduce | 1,443,447 | -413,032 | -22.2% | $121.4M | 0.03% |
| 2021 Q2 | 2021-08-16 | Add | 1,856,479 | 911,966 | +96.6% | $177.0M | 0.04% |
| 2021 Q1 | 2021-05-21 | Add | 944,513 | 438,003 | +86.5% | $107.5M | 0.03% |
| 2020 Q4 | 2021-02-16 | Add | 506,510 | 57,123 | +12.7% | $70.1M | 0.02% |
| 2020 Q3 | 2020-11-16 | Reduce | 449,387 | -207,833 | -31.6% | $36.9M | 0.01% |
| 2020 Q2 | 2020-08-14 | Reduce | 657,220 | -969,888 | -59.6% | $51.4M | 0.02% |
| 2020 Q1 | 2020-05-15 | Add | 1,627,108 | 128,466 | +8.6% | $72.3M | 0.03% |
| 2019 Q4 | 2020-02-14 | New | 1,498,642 | 1,498,642 | — | $64.0M | 0.03% |
| 2019 Q2 | 2020-02-14 | — | — | — | — | — | — |
| 2018 Q4 | 2019-11-14 | Sold out | — | -438,746 | -100.0% | — | — |
| 2019 Q3 | 2019-11-14 | New | 438,746 | 438,746 | — | $18.8M | 0.01% |
| 2018 Q2 | 2019-08-14 | — | — | — | — | — | — |
| 2018 Q3 | 2019-05-15 | Sold out | — | -974,072 | -100.0% | — | — |
| 2019 Q1 | 2019-05-15 | New | 974,072 | 974,072 | — | $67.6M | 0.03% |
| 2018 Q1 | 2019-02-14 | Sold out | — | -294,360 | -100.0% | — | — |
| 2017 Q4 | 2018-02-09 | Add | 294,360 | 269,271 | +1073.3% | $13.7M | 0.01% |
| 2017 Q3 | 2017-11-09 | Add | 25,089 | 20,746 | +477.7% | $1.3M | 0.00% |
| 2017 Q2 | 2017-08-11 | Reduce | 4,343 | -6,238 | -59.0% | $270.0K | — |
| 2017 Q1 | 2017-05-12 | Add | 10,581 | 7,074 | +201.7% | $717.0K | 0.00% |
| 2016 Q4 | 2017-02-10 | Reduce | 3,507 | -80,209 | -95.8% | $247.0K | — |
| 2015 Q4 | 2017-01-31 | New | 83,716 | 83,716 | — | $9.4M | 0.01% |
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.