MKSI
MKS Inc. Common Stock
stockNASDAQ
Market OpenNov 6, 2026 11:45:13 AM EST
187.58USD+6.085%(+10.76)481,468
Pre-marketNov 6, 2026 9:27:30 AM EST
196.91USD+11.362%(+20.09)
As of 2026-10-15, there were 4,910,795 shares short with a short interest of 7.31%.
MKSI Short Interest - Official
MKSI Short Position Change - Official
MKSI Short Interest - Official
| Settlement Date1 | Short Interest % | Short Position | Days to Cover2 | Short Position Change | Short Position Change % | Shares Out | Shares Float |
|---|---|---|---|---|---|---|---|
| 2026-10-15 | 7.31 | 4,910,795 | 3.66 | -175,681 | -3.45 | 67,617,558 | 67,221,995 |
| 2026-09-30 | 7.58 | 5,086,476 | 4.22 | -988,103 | -16.27 | 67,617,558 | 67,135,487 |
| 2026-09-15 | 9.05 | 6,074,579 | 4.57 | -178,054 | -2.85 | 67,617,558 | 67,135,487 |
| 2026-08-31 | 9.31 | 6,252,633 | 4.95 | +766,067 | +13.96 | 67,617,558 | 67,135,487 |
| 2026-08-14 | 8.17 | 5,486,566 | 3.50 | -265,366 | -4.61 | 67,617,558 | 67,135,487 |
| 2026-07-31 | 8.57 | 5,751,932 | 4.02 | +593,333 | +11.50 | 67,544,129 | 67,135,487 |
| 2026-07-15 | 7.68 | 5,158,599 | 3.93 | +194,932 | +3.93 | 67,544,129 | 67,144,943 |
| 2026-06-30 | 7.39 | 4,963,667 | 2.76 | +376,239 | +8.20 | 67,544,129 | 67,144,943 |
| 2026-06-15 | 6.83 | 4,587,428 | 4.65 | +258,245 | +5.97 | 67,544,129 | 67,140,891 |
| 2026-05-15 | 6.45 | 4,329,183 | 2.86 | +766,875 | +21.53 | 67,544,129 | 67,095,636 |
| 2026-04-30 | 5.34 | 3,562,308 | 3.22 | +30,423 | +0.86 | 67,321,698 | 66,709,363 |
| 2026-04-15 | 5.29 | 3,531,885 | 3.97 | -210,738 | -5.63 | 67,321,698 | 66,709,363 |
| 2026-03-31 | 5.61 | 3,742,623 | 3.25 | +306,927 | +8.93 | 67,248,357 | 66,709,363 |
| 2026-03-13 | 5.15 | 3,435,696 | 2.62 | -406,863 | -10.59 | 67,248,357 | 66,709,363 |
| 2026-02-27 | 5.76 | 3,842,559 | 2.14 | +641,261 | +20.03 | 67,169,474 | 66,709,363 |
| 2026-02-13 | 4.80 | 3,201,298 | 1.68 | +252,948 | +8.58 | 67,169,474 | 66,709,363 |
| 2026-01-30 | 4.42 | 2,948,350 | 1.59 | -215,016 | -6.80 | 67,169,474 | 66,709,363 |
| 2026-01-15 | 4.74 | 3,163,366 | 3.40 | +210,643 | +7.13 | 67,169,474 | 66,709,363 |
| 2025-12-31 | 4.43 | 2,952,723 | 4.10 | +138,765 | +4.93 | 67,169,474 | 66,709,363 |
| 2025-12-15 | 4.22 | 2,813,958 | 3.06 | -89,616 | -3.09 | 67,169,474 | 66,709,363 |
| 2025-11-28 | 4.35 | 2,903,574 | 3.77 | -734,773 | -20.20 | 67,169,474 | 66,709,363 |
| 2025-11-14 | 5.46 | 3,638,347 | 3.00 | +164,531 | +4.74 | 67,169,474 | 66,697,273 |
Historical data is split-adjusted.
1 Data from Finra. Finra publishes an updated file every two weeks.
2 Days to Cover (DTC) is also called Short Ratio. This is the Short Position / Average Daily Trading Volume.