OSIS
OSI Systems Inc
stockNASDAQ
At CloseOct 20, 2026 3:59:54 PM EDT
194.96USD+0.510%(+0.99)161,006
After-hoursOct 20, 2026 4:32:30 PM EDT
194.86USD-0.051%(-0.10)
As of 2026-09-30, there were 2,086,464 shares short with a short interest of 13.41%.
OSIS Short Interest - Official
OSIS Short Position Change - Official
OSIS Short Interest - Official
| Settlement Date1 | Short Interest % | Short Position | Days to Cover2 | Short Position Change | Short Position Change % | Shares Out | Shares Float |
|---|---|---|---|---|---|---|---|
| 2026-09-30 | 13.41 | 2,086,464 | 10.26 | -35,107 | -1.65 | 15,941,968 | 15,557,046 |
| 2026-09-15 | 13.64 | 2,121,571 | 8.23 | +69,774 | +3.40 | 15,941,968 | 15,557,046 |
| 2026-08-31 | 13.19 | 2,051,797 | 5.01 | +18,457 | +0.91 | 15,941,968 | 15,557,046 |
| 2026-08-14 | 13.07 | 2,033,340 | 13.26 | -57,432 | -2.75 | 16,482,890 | 15,557,046 |
| 2026-07-31 | 13.44 | 2,090,772 | 12.44 | -46,100 | -2.16 | 16,482,890 | 15,556,552 |
| 2026-07-15 | 13.73 | 2,136,872 | 11.01 | -148,054 | -6.48 | 16,482,890 | 15,561,167 |
| 2026-06-30 | 14.68 | 2,284,926 | 8.37 | -89,678 | -3.78 | 16,482,890 | 15,567,430 |
| 2026-06-15 | 15.25 | 2,374,604 | 8.94 | +150,058 | +6.75 | 16,482,890 | 15,567,430 |
| 2026-05-15 | 14.29 | 2,224,546 | 4.82 | +161,633 | +7.84 | 16,482,890 | 15,567,430 |
| 2026-04-30 | 12.85 | 2,062,913 | 8.51 | -641 | -0.03 | 16,472,549 | 16,057,163 |
| 2026-04-15 | 12.85 | 2,063,554 | 9.63 | -65,261 | -3.07 | 16,472,549 | 16,057,163 |
| 2026-03-31 | 13.26 | 2,128,815 | 6.06 | -118,715 | -5.28 | 16,472,549 | 16,057,163 |
| 2026-03-13 | 14.00 | 2,247,530 | 8.26 | +19,869 | +0.89 | 16,472,549 | 16,057,163 |
| 2026-02-27 | 13.87 | 2,227,661 | 10.20 | +195,076 | +9.60 | 16,472,549 | 16,057,163 |
| 2026-02-13 | 12.66 | 2,032,585 | 7.84 | +60,295 | +3.06 | 16,472,549 | 16,057,163 |
| 2026-01-30 | 12.28 | 1,972,290 | 7.08 | +83,519 | +4.42 | 16,472,549 | 16,057,163 |
| 2026-01-15 | 11.76 | 1,888,771 | 7.06 | -141,837 | -6.98 | 16,977,873 | 16,057,163 |
| 2025-12-31 | 12.65 | 2,030,608 | 8.43 | +28,054 | +1.40 | 16,977,873 | 16,057,163 |
| 2025-12-15 | 12.45 | 2,002,554 | 10.13 | -4,254 | -0.21 | 16,977,873 | 16,085,007 |
| 2025-11-28 | 12.44 | 2,006,808 | 4.11 | +116,050 | +6.14 | 16,977,873 | 16,128,979 |
| 2025-11-14 | 11.71 | 1,890,758 | 8.85 | -4,877 | -0.26 | 16,977,873 | 16,144,769 |
| 2025-10-31 | 11.98 | 1,895,635 | 11.63 | -12,689 | -0.66 | 16,977,873 | 15,829,482 |
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.