Citadel Advisors (Ken Griffin) — MKSI Trade History
Quarter-by-quarter changes in the MKS INC. position · CUSIP 55306N104
Currently held · 1.3 YearsFirst seen: 2015 Q4
| Quarter | Filed | Activity | Shares | Δ Shares | Δ % | Value | % Port. |
|---|---|---|---|---|---|---|---|
| 2026 Q2 | 2026-09-02 | Reduce | 697,670 | -249,362 | -26.3% | $310.3M | 0.04% |
| 2026 Q1 | 2026-05-15 | Add | 947,032 | 489,159 | +106.8% | $217.6M | 0.04% |
| 2025 Q4 | 2026-02-17 | Add | 457,873 | 316,715 | +224.4% | $73.2M | 0.01% |
| 2025 Q3 | 2025-11-14 | Reduce | 141,158 | -4,880 | -3.3% | $17.5M | 0.00% |
| 2025 Q2 | 2025-08-14 | New | 146,038 | 146,038 | — | $14.5M | 0.00% |
| 2025 Q1 | 2025-05-15 | Sold out | — | -37,120 | -100.0% | — | — |
| 2024 Q4 | 2025-02-14 | Reduce | 37,120 | -64,463 | -63.5% | $3.9M | 0.00% |
| 2024 Q3 | 2024-11-14 | Add | 101,583 | 53,275 | +110.3% | $11.0M | 0.00% |
| 2024 Q2 | 2024-08-14 | New | 48,308 | 48,308 | — | $6.3M | 0.00% |
| 2024 Q1 | 2024-05-15 | Sold out | — | -27,638 | -100.0% | — | — |
| 2023 Q4 | 2024-02-14 | Add | 27,638 | 22,299 | +417.7% | $2.8M | 0.00% |
| 2023 Q3 | 2023-11-14 | Reduce | 5,339 | -93,789 | -94.6% | $462.0K | — |
| 2023 Q2 | 2023-08-14 | Add | 99,128 | 45,535 | +85.0% | $10.7M | 0.00% |
| 2023 Q1 | 2023-05-15 | Add | 53,593 | 52,259 | +3917.5% | $4.7M | 0.00% |
| 2022 Q4 | 2023-02-14 | Reduce | 1,334 | -5,344 | -80.0% | $113.0K | — |
| 2022 Q3 | 2022-11-14 | Reduce | 6,678 | -167,699 | -96.2% | $552.0K | — |
| 2022 Q2 | 2022-08-15 | New | 174,377 | 174,377 | — | $17.9M | 0.01% |
| 2022 Q1 | 2022-05-16 | — | — | — | — | — | — |
| 2021 Q3 | 2022-03-11 | Sold out | — | -20,233 | -100.0% | — | — |
| 2021 Q4 | 2022-02-14 | Reduce | 20,233 | -37,970 | -65.2% | $3.5M | 0.00% |
| 2021 Q2 | 2021-08-16 | Add | 58,203 | 44,030 | +310.7% | $10.4M | 0.00% |
| 2021 Q1 | 2021-05-21 | Reduce | 14,173 | -163,977 | -92.0% | $2.6M | 0.00% |
| 2020 Q4 | 2021-02-16 | Add | 178,150 | 71,589 | +67.2% | $26.8M | 0.01% |
| 2020 Q3 | 2020-11-16 | Add | 106,561 | 18,558 | +21.1% | $11.6M | 0.00% |
| 2020 Q2 | 2020-08-14 | Add | 88,003 | 39,302 | +80.7% | $10.0M | 0.00% |
| 2020 Q1 | 2020-05-15 | Add | 48,701 | 38,382 | +372.0% | $4.0M | 0.00% |
| 2019 Q4 | 2020-02-14 | New | 10,319 | 10,319 | — | $1.1M | — |
| 2019 Q2 | 2020-02-14 | — | — | — | — | — | — |
| 2018 Q4 | 2019-11-14 | — | — | — | — | — | — |
| 2019 Q3 | 2019-11-14 | — | — | — | — | — | — |
| 2018 Q2 | 2019-08-14 | — | — | — | — | — | — |
| 2018 Q3 | 2019-05-15 | Sold out | — | -6,466 | -100.0% | — | — |
| 2019 Q1 | 2019-05-15 | New | 6,466 | 6,466 | — | $602.0K | — |
| 2018 Q1 | 2019-02-14 | Sold out | — | -103,784 | -100.0% | — | — |
| 2017 Q4 | 2018-02-09 | Add | 103,784 | 28,174 | +37.3% | $9.8M | 0.01% |
| 2017 Q3 | 2017-11-09 | Reduce | 75,610 | -125,683 | -62.4% | $7.1M | 0.01% |
| 2017 Q2 | 2017-08-11 | Add | 201,293 | 166,813 | +483.8% | $13.5M | 0.01% |
| 2017 Q1 | 2017-05-12 | Add | 34,480 | 17,597 | +104.2% | $2.4M | 0.00% |
| 2016 Q4 | 2017-02-10 | Reduce | 16,883 | -78,424 | -82.3% | $1.0M | 0.00% |
| 2015 Q4 | 2017-01-31 | New | 95,307 | 95,307 | — | $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.