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)
OSIS Off Exchange & Dark Pool Summary
Today’s Off Exchange & Dark Pool volume is 66,097, which is 41.06% of today’s total volume. Today’s Lit volume is 94,896 (58.94%). Over the past 30 days, the average Off Exchange & Dark Pool volume has been 42.76%, and the average Lit volume 57.24%.
| Exchange | Day % | Volume | 30D % |
|---|---|---|---|
| Nasdaq GSM | 41.14% | 66,226 | 35.69% |
| Off Exchange1 | 41.06% | 66,097 | 42.76% |
| IEX | 4.79% | 7,706 | 4.75% |
| NYSE Arca | 4.09% | 6,584 | 6.83% |
| Cboe BZX | 2.87% | 4,615 | 3.13% |
| Cboe EDGX | 1.35% | 2,176 | 1.94% |
| NYSE | 1.00% | 1,617 | 1.21% |
| Nasdaq BX | 0.85% | 1,368 | 0.39% |
| Cboe BYX | 0.83% | 1,332 | 0.83% |
| MEMX | 0.61% | 986 | 0.68% |
| Nasdaq PHLX | 0.50% | 809 | 0.38% |
| Cboe EDGA | 0.44% | 716 | 0.36% |
| NYSE National | 0.20% | 314 | 0.51% |
| MIAX Pearl | 0.19% | 301 | 0.28% |
| CHX | 0.08% | 122 | 0.09% |
| TXSE | 0.01% | 20 | 0.01% |
| NYSE American | 0.00% | 4 | 0.12% |
OSIS Volume by Exchange
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OSIS Volume by Exchange
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OSIS Volume by Exchange · History
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| Date | Nasdaq GSM | Off Exchange1 | IEX | NYSE Arca | Cboe BZX | Cboe EDGX | NYSE | Nasdaq BX | Cboe BYX | MEMX | Nasdaq PHLX | Cboe EDGA | NYSE National | MIAX Pearl | CHX | TXSE | NYSE American | 24X National | LTSE |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-10-20 | 41.14 | 41.06 | 4.79 | 4.09 | 2.87 | 1.35 | 1.00 | 0.85 | 0.83 | 0.61 | 0.50 | 0.44 | 0.20 | 0.19 | 0.08 | 0.01 | 0.00 | 0.00 | 0.00 |
| 2026-10-19 | 33.73 | 47.83 | 6.46 | 4.84 | 2.26 | 1.18 | 0.46 | 0.22 | 0.68 | 0.68 | 0.18 | 0.56 | 0.21 | 0.51 | 0.07 | 0.00 | 0.14 | 0.00 | 0.00 |
| 2026-10-16 | 28.27 | 48.24 | 7.15 | 10.99 | 1.53 | 1.01 | 0.52 | 0.19 | 0.57 | 0.43 | 0.11 | 0.35 | 0.14 | 0.44 | 0.03 | 0.00 | 0.03 | 0.00 | 0.00 |
| 2026-10-15 | 33.49 | 45.10 | 5.48 | 4.71 | 3.90 | 1.79 | 0.91 | 0.31 | 3.06 | 0.39 | 0.21 | 0.14 | 0.23 | 0.19 | 0.01 | 0.00 | 0.08 | 0.00 | 0.00 |
| 2026-10-14 | 32.72 | 48.09 | 5.05 | 5.62 | 2.33 | 1.82 | 0.92 | 0.44 | 0.77 | 0.60 | 0.27 | 0.16 | 0.25 | 0.11 | 0.61 | 0.00 | 0.24 | 0.00 | 0.00 |
| 2026-10-13 | 37.48 | 42.85 | 3.40 | 6.81 | 2.42 | 1.80 | 0.89 | 0.72 | 0.19 | 0.16 | 1.81 | 0.21 | 1.10 | 0.07 | 0.07 | 0.00 | 0.02 | 0.00 | 0.00 |
| 2026-10-12 | 40.44 | 41.97 | 2.66 | 5.51 | 1.72 | 1.64 | 0.59 | 0.68 | 0.14 | 0.32 | 0.70 | 0.90 | 2.41 | 0.06 | 0.16 | 0.00 | 0.10 | 0.00 | 0.00 |
| 2026-10-09 | 35.82 | 42.58 | 6.82 | 4.69 | 3.54 | 2.16 | 1.38 | 0.18 | 0.57 | 0.60 | 0.27 | 0.33 | 0.24 | 0.26 | 0.29 | 0.00 | 0.26 | 0.00 | 0.00 |
| 2026-10-08 | 30.73 | 49.59 | 4.92 | 6.37 | 2.06 | 2.26 | 1.07 | 0.38 | 0.51 | 0.96 | 0.22 | 0.18 | 0.37 | 0.28 | 0.04 | 0.00 | 0.08 | 0.00 | 0.00 |
| 2026-10-07 | 29.91 | 54.15 | 5.15 | 4.86 | 2.01 | 1.48 | 0.94 | 0.13 | 0.30 | 0.44 | 0.16 | 0.12 | 0.07 | 0.13 | 0.11 | 0.01 | 0.03 | 0.00 | 0.00 |
| 2026-10-06 | 37.04 | 37.34 | 3.30 | 6.53 | 2.54 | 4.13 | 0.93 | 0.32 | 4.70 | 0.86 | 0.76 | 0.41 | 0.30 | 0.55 | 0.19 | 0.00 | 0.11 | 0.00 | 0.00 |
| 2026-10-05 | 50.60 | 34.29 | 2.32 | 4.28 | 3.18 | 2.23 | 0.99 | 0.18 | 0.38 | 0.29 | 0.16 | 0.22 | 0.29 | 0.41 | 0.04 | 0.06 | 0.07 | 0.00 | 0.00 |
| 2026-10-02 | 36.48 | 40.64 | 5.31 | 5.23 | 4.30 | 1.88 | 2.27 | 0.23 | 0.58 | 0.57 | 0.18 | 0.21 | 1.61 | 0.15 | 0.18 | 0.07 | 0.11 | 0.00 | 0.00 |
| 2026-10-01 | 27.11 | 59.02 | 3.83 | 4.22 | 1.67 | 1.25 | 0.88 | 0.28 | 0.39 | 0.47 | 0.11 | 0.16 | 0.16 | 0.18 | 0.08 | 0.00 | 0.06 | 0.06 | 0.05 |
| 2026-09-30 | 35.73 | 48.21 | 5.81 | 3.10 | 2.98 | 1.19 | 0.74 | 0.20 | 0.33 | 1.00 | 0.03 | 0.27 | 0.03 | 0.10 | 0.08 | 0.00 | 0.12 | 0.00 | 0.10 |
| 2026-09-29 | 40.39 | 34.08 | 7.50 | 5.95 | 3.35 | 1.68 | 1.86 | 0.51 | 1.29 | 0.96 | 0.27 | 0.72 | 0.57 | 0.50 | 0.11 | 0.00 | 0.22 | 0.00 | 0.05 |
| 2026-09-28 | 46.28 | 33.27 | 2.90 | 7.40 | 4.33 | 2.31 | 1.16 | 0.08 | 0.29 | 0.61 | 0.19 | 0.52 | 0.13 | 0.48 | 0.02 | 0.00 | 0.01 | 0.00 | 0.02 |
| 2026-09-25 | 29.58 | 42.34 | 6.94 | 5.45 | 4.74 | 2.56 | 1.76 | 0.76 | 1.60 | 1.19 | 0.53 | 1.00 | 0.17 | 0.78 | 0.07 | 0.00 | 0.46 | 0.00 | 0.08 |
| 2026-09-24 | 36.51 | 38.23 | 3.44 | 9.15 | 4.79 | 2.34 | 1.61 | 1.16 | 0.85 | 0.80 | 0.04 | 0.18 | 0.70 | 0.10 | 0.00 | 0.00 | 0.03 | 0.00 | 0.08 |
| 2026-09-23 | 30.67 | 42.05 | 5.47 | 7.65 | 4.59 | 2.84 | 1.46 | 0.45 | 0.51 | 0.53 | 0.81 | 0.38 | 2.17 | 0.20 | 0.01 | 0.01 | 0.13 | 0.00 | 0.08 |
| 2026-09-22 | 38.00 | 46.27 | 3.07 | 5.29 | 2.45 | 2.08 | 1.35 | 0.22 | 0.57 | 0.13 | 0.15 | 0.10 | 0.05 | 0.21 | 0.00 | 0.00 | 0.05 | 0.00 | 0.00 |
| 2026-09-21 | 36.49 | 40.66 | 4.31 | 6.74 | 4.32 | 2.38 | 1.37 | 0.44 | 1.53 | 0.48 | 0.29 | 0.36 | 0.11 | 0.23 | 0.05 | 0.00 | 0.22 | 0.00 | 0.00 |
| 2026-09-18 | 68.86 | 23.24 | 2.55 | 2.37 | 1.06 | 0.89 | 0.29 | 0.03 | 0.23 | 0.11 | 0.08 | 0.08 | 0.03 | 0.05 | 0.00 | 0.00 | 0.02 | 0.00 | 0.09 |
| 2026-09-17 | 32.54 | 50.53 | 5.07 | 3.77 | 2.63 | 1.95 | 0.87 | 0.58 | 0.63 | 0.33 | 0.27 | 0.41 | 0.05 | 0.20 | 0.05 | 0.00 | 0.11 | 0.00 | 0.00 |
| 2026-09-16 | 28.28 | 50.53 | 5.80 | 5.58 | 2.43 | 1.90 | 1.38 | 0.24 | 1.23 | 0.46 | 0.58 | 0.67 | 0.18 | 0.09 | 0.23 | 0.00 | 0.41 | 0.00 | 0.03 |
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| Level | Trades | Volume | Premium ▼ |
|---|---|---|---|
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| Date | Time | Price | Size | Premium ▼ | Side | Exchange | Conditions | |
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