Citadel Advisors (Ken Griffin) — WDC Trade History
Quarter-by-quarter changes in the WESTERN DIGITAL CORP position · CUSIP 958102105
Currently held · 4.5 YearsFirst seen: 2015 Q4split-adjusted
| Quarter | Filed | Activity | Shares | Δ Shares | Δ % | Value | % Port. |
|---|---|---|---|---|---|---|---|
| 2026 Q2 | 2026-09-02 | Add | 657,878 | 392,010 | +147.4% | $420.2M | 0.05% |
| 2026 Q1 | 2026-05-15 | Reduce | 265,868 | -1,053,898 | -79.9% | $71.9M | 0.01% |
| 2025 Q4 | 2026-02-17 | Reduce | 1,319,766 | -2,407,840 | -64.6% | $227.4M | 0.03% |
| 2025 Q3 | 2025-11-14 | Add | 3,727,606 | 212,003 | +6.0% | $447.5M | 0.07% |
| 2025 Q2 | 2025-08-14 | Reduce | 3,515,603 | -381,329 | -9.8% | $225.0M | 0.04% |
| 2025 Q1 | 2025-05-15 | Add | 3,896,932 | 75,789 | +2.0% | $157.6M | 0.03% |
| 2024 Q4 | 2025-02-14 | Add | 3,821,143 | 1,720,933 | +81.9% | $172.2M | 0.03% |
| 2024 Q3 | 2024-11-14 | Reduce | 2,100,210 | -4,168,538 | -66.5% | $108.4M | 0.02% |
| 2024 Q2 | 2024-08-14 | Reduce | 6,268,748 | -1,394,411 | -18.2% | $359.0M | 0.07% |
| 2024 Q1 | 2024-05-15 | Reduce | 7,663,159 | -1,464,685 | -16.0% | $395.3M | 0.08% |
| 2023 Q4 | 2024-02-14 | Add | 9,127,844 | 2,150,416 | +30.8% | $361.3M | 0.07% |
| 2023 Q3 | 2023-11-14 | Add | 6,977,428 | 4,916,923 | +238.6% | $240.7M | 0.05% |
| 2023 Q2 | 2023-08-14 | Add | 2,060,505 | 969,965 | +88.9% | $59.1M | 0.01% |
| 2023 Q1 | 2023-05-15 | Reduce | 1,090,540 | -1,493,845 | -57.8% | $31.1M | 0.01% |
| 2022 Q4 | 2023-02-14 | Add | 2,584,385 | 1,044,336 | +67.8% | $61.6M | 0.01% |
| 2022 Q3 | 2022-11-14 | Add | 1,540,049 | 816,122 | +112.7% | $37.9M | 0.01% |
| 2022 Q2 | 2022-08-15 | Reduce | 723,927 | -1,577,281 | -68.5% | $24.5M | 0.01% |
| 2022 Q1 | 2022-05-16 | New | 2,301,208 | 2,301,208 | — | $86.4M | 0.02% |
| 2021 Q3 | 2022-03-11 | Sold out | — | -93,916 | -100.0% | — | — |
| 2021 Q4 | 2022-02-14 | Reduce | 93,916 | -2,864,526 | -96.8% | $4.6M | 0.00% |
| 2021 Q2 | 2021-08-16 | Add | 2,958,442 | 1,346,814 | +83.6% | $159.1M | 0.04% |
| 2021 Q1 | 2021-05-21 | Add | 1,611,628 | 629,209 | +64.0% | $81.3M | 0.02% |
| 2020 Q4 | 2021-02-16 | Add | 982,419 | 354,354 | +56.4% | $41.1M | 0.01% |
| 2020 Q3 | 2020-11-16 | Add | 628,065 | 271,732 | +76.3% | $17.4M | 0.01% |
| 2020 Q2 | 2020-08-14 | Reduce | 356,333 | -1,401,378 | -79.7% | $11.9M | 0.00% |
| 2020 Q1 | 2020-05-15 | Reduce | 1,757,711 | -807,484 | -31.5% | $55.3M | 0.03% |
| 2019 Q4 | 2020-02-14 | New | 2,565,195 | 2,565,195 | — | $123.1M | 0.05% |
| 2019 Q2 | 2020-02-14 | — | — | — | — | — | — |
| 2018 Q4 | 2019-11-14 | Sold out | — | -3,835,893 | -100.0% | — | — |
| 2019 Q3 | 2019-11-14 | New | 3,835,893 | 3,835,893 | — | $172.9M | 0.08% |
| 2018 Q2 | 2019-08-14 | — | — | — | — | — | — |
| 2018 Q3 | 2019-05-15 | Sold out | — | -21,356 | -100.0% | — | — |
| 2019 Q1 | 2019-05-15 | New | 21,356 | 21,356 | — | $776.0K | — |
| 2018 Q1 | 2019-02-14 | Sold out | — | -1,861,620 | -100.0% | — | — |
| 2017 Q4 | 2018-02-09 | Reduce | 1,861,620 | -1,910,675 | -50.7% | $111.9M | 0.07% |
| 2017 Q3 | 2017-11-09 | Add | 3,772,295 | 83,284 | +2.3% | $246.4M | 0.19% |
| 2017 Q2 | 2017-08-11 | Reduce | 3,689,011 | -532,023 | -12.6% | $247.0M | 0.21% |
| 2017 Q1 | 2017-05-12 | Add | 4,221,034 | 3,416,626 | +424.7% | $263.3M | 0.24% |
| 2016 Q4 | 2017-02-10 | Add | 804,408 | 729,628 | +975.7% | $41.3M | 0.04% |
| 2015 Q4 | 2017-01-31 | New | 74,780 | 74,780 | — | $3.4M | 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.