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OSI Systems Inc (OSIS) — Price History
As of 2026-10-16 — refreshed nightly from the Closelooknet data lake. Diary readings, not advice.
Daily prices
| Date | Open | High | Low | Close | Chg % | Volume |
|---|---|---|---|---|---|---|
| 2026-10-16 | 196.21 | 196.21 | 192.96 | 194.98 | -0.63% | 202,900 |
| 2026-10-15 | 192.99 | 197.42 | 190.94 | 196.21 | +1.83% | 135,100 |
| 2026-10-14 | 192.11 | 194.13 | 190.21 | 192.68 | -1.04% | 180,900 |
| 2026-10-13 | 195.54 | 197.70 | 194.05 | 194.70 | -0.32% | 176,700 |
| 2026-10-12 | 195.49 | 196.96 | 193.36 | 195.32 | +0.21% | 171,800 |
| 2026-10-09 | 193.72 | 195.52 | 190.07 | 194.91 | +0.80% | 134,800 |
| 2026-10-08 | 192.75 | 196.52 | 191.09 | 193.36 | -0.36% | 158,800 |
| 2026-10-07 | 195.53 | 197.41 | 191.09 | 194.05 | -2.27% | 224,300 |
| 2026-10-06 | 199.55 | 199.55 | 196.43 | 198.56 | +0.35% | 122,700 |
| 2026-10-05 | 197.73 | 199.53 | 194.24 | 197.87 | +0.55% | 198,900 |
| 2026-10-02 | 199.40 | 199.40 | 195.90 | 196.78 | +0.08% | 149,400 |
| 2026-10-01 | 195.00 | 199.39 | 190.24 | 196.62 | +1.16% | 174,900 |
| 2026-09-30 | 193.40 | 196.02 | 190.77 | 194.37 | +1.08% | 208,300 |
| 2026-09-29 | 192.86 | 193.02 | 190.44 | 192.30 | -0.38% | 174,300 |
| 2026-09-28 | 197.62 | 197.62 | 192.29 | 193.04 | -2.13% | 123,300 |
| 2026-09-25 | 202.48 | 202.93 | 195.37 | 197.24 | -2.02% | 197,200 |
| 2026-09-24 | 202.00 | 205.15 | 200.15 | 201.30 | -0.84% | 134,300 |
| 2026-09-23 | 200.83 | 203.78 | 198.93 | 203.00 | +1.08% | 213,300 |
| 2026-09-22 | 203.18 | 203.45 | 199.23 | 200.84 | +0.22% | 183,900 |
| 2026-09-21 | 199.20 | 202.06 | 196.43 | 200.40 | +1.36% | 162,900 |
| 2026-09-18 | 200.46 | 202.67 | 197.06 | 197.71 | -1.32% | 395,500 |
| 2026-09-17 | 206.06 | 206.06 | 198.14 | 200.35 | -0.69% | 205,400 |
| 2026-09-16 | 205.63 | 206.38 | 200.20 | 201.75 | -0.41% | 270,700 |
| 2026-09-15 | 198.26 | 202.80 | 195.32 | 202.59 | +1.32% | 282,600 |
| 2026-09-14 | 202.06 | 203.84 | 199.37 | 199.95 | -2.12% | 225,200 |
| 2026-09-11 | 203.11 | 205.44 | 200.83 | 204.29 | +1.51% | 236,100 |
| 2026-09-10 | 196.05 | 202.21 | 195.69 | 201.25 | +1.90% | 267,800 |
| 2026-09-09 | 202.75 | 205.77 | 195.76 | 197.49 | -3.31% | 381,500 |
| 2026-09-08 | 203.64 | 207.26 | 201.00 | 204.25 | +0.05% | 333,000 |
| 2026-09-04 | 206.23 | 207.49 | 201.43 | 204.15 | -1.20% | 204,900 |
| 2026-09-03 | 207.93 | 207.93 | 201.10 | 206.62 | -0.06% | 284,300 |
| 2026-09-02 | 208.52 | 210.80 | 206.11 | 206.75 | -0.85% | 199,200 |
| 2026-09-01 | 207.93 | 210.47 | 204.83 | 208.52 | +0.29% | 192,300 |
| 2026-08-31 | 207.16 | 210.62 | 205.22 | 207.91 | +0.61% | 248,200 |
| 2026-08-28 | 210.27 | 212.21 | 205.70 | 206.64 | -2.02% | 215,100 |
| 2026-08-27 | 211.31 | 213.00 | 207.79 | 210.89 | -0.07% | 313,400 |
| 2026-08-26 | 203.92 | 211.43 | 203.67 | 211.04 | +3.42% | 347,900 |
| 2026-08-25 | 207.11 | 208.99 | 202.85 | 204.07 | +0.01% | 485,400 |
| 2026-08-24 | 206.44 | 209.99 | 202.00 | 204.05 | -1.30% | 857,500 |
| 2026-08-21 | 196.00 | 207.82 | 186.50 | 206.73 | -5.21% | 1,289,800 |
| 2026-08-20 | 219.32 | 221.40 | 214.17 | 218.09 | -1.28% | 381,300 |
| 2026-08-19 | 221.00 | 223.73 | 217.97 | 220.92 | +1.00% | 163,500 |
| 2026-08-18 | 226.47 | 226.65 | 218.52 | 218.73 | -4.85% | 162,600 |
| 2026-08-17 | 232.21 | 234.73 | 226.59 | 229.87 | +0.70% | 125,500 |
| 2026-08-14 | 228.56 | 232.91 | 226.98 | 228.27 | -0.13% | 132,300 |
| 2026-08-13 | 234.35 | 236.83 | 226.95 | 228.56 | -1.30% | 149,300 |
| 2026-08-12 | 236.80 | 236.80 | 228.55 | 231.57 | -0.70% | 196,500 |
| 2026-08-11 | 235.09 | 236.92 | 231.50 | 233.20 | +0.25% | 170,500 |
| 2026-08-10 | 236.06 | 239.07 | 231.62 | 232.61 | -1.53% | 210,700 |
| 2026-08-07 | 238.77 | 239.00 | 234.26 | 236.23 | -0.37% | 93,900 |
| 2026-08-06 | 236.26 | 240.90 | 233.70 | 237.10 | +0.85% | 96,600 |
| 2026-08-05 | 236.24 | 237.25 | 233.52 | 235.09 | -0.64% | 133,400 |
| 2026-08-04 | 228.82 | 237.46 | 225.30 | 236.60 | +4.89% | 159,000 |
| 2026-08-03 | 222.37 | 227.13 | 221.04 | 225.57 | +1.89% | 206,000 |
| 2026-07-31 | 222.07 | 223.90 | 218.62 | 221.39 | +0.67% | 198,800 |
| 2026-07-30 | 215.96 | 220.38 | 212.08 | 219.92 | +2.76% | 107,400 |
| 2026-07-29 | 219.27 | 224.03 | 213.55 | 214.02 | -3.00% | 142,400 |
| 2026-07-28 | 217.30 | 222.57 | 217.30 | 220.64 | +1.54% | 128,400 |
| 2026-07-27 | 217.95 | 220.34 | 213.08 | 217.30 | +0.28% | 134,700 |
| 2026-07-24 | 214.55 | 218.23 | 210.40 | 216.70 | +1.08% | 181,200 |
| 2026-07-23 | 208.00 | 214.68 | 205.87 | 214.39 | +2.19% | 187,400 |
| 2026-07-22 | 210.14 | 212.23 | 208.29 | 209.79 | -0.22% | 141,900 |
| 2026-07-21 | 211.92 | 213.00 | 208.02 | 210.25 | -0.11% | 238,181 |
| 2026-07-20 | 212.66 | 215.93 | 209.90 | 210.48 | -1.03% | 230,217 |
| 2026-07-17 | 213.35 | 218.01 | 210.00 | 212.66 | -1.65% | 217,200 |
| 2026-07-16 | 217.30 | 223.33 | 213.06 | 216.22 | -0.95% | 131,000 |
| 2026-07-15 | 211.69 | 218.76 | 211.01 | 218.29 | +3.42% | 134,800 |
| 2026-07-14 | 214.94 | 220.20 | 211.05 | 211.07 | -1.00% | 161,800 |
| 2026-07-13 | 214.95 | 216.25 | 211.30 | 213.20 | -1.53% | 279,900 |
| 2026-07-10 | 218.54 | 223.69 | 215.99 | 216.51 | -0.06% | 211,600 |
| 2026-07-09 | 217.35 | 217.98 | 213.10 | 216.65 | -0.35% | 159,400 |
| 2026-07-08 | 218.22 | 220.04 | 213.27 | 217.42 | -0.59% | 180,400 |
| 2026-07-07 | 219.89 | 221.00 | 213.85 | 218.72 | -0.96% | 194,800 |
| 2026-07-06 | 222.13 | 224.90 | 216.20 | 220.83 | -0.42% | 227,300 |
| 2026-07-02 | 217.00 | 221.93 | 213.87 | 221.76 | +3.19% | 172,900 |
| 2026-07-01 | 218.39 | 223.07 | 214.41 | 214.90 | -1.74% | 234,200 |
| 2026-06-30 | 214.74 | 221.00 | 214.04 | 218.70 | +2.56% | 284,200 |
| 2026-06-29 | 217.59 | 219.34 | 210.79 | 213.24 | -2.31% | 241,600 |
| 2026-06-26 | 216.28 | 219.70 | 212.88 | 218.29 | -0.29% | 645,600 |
| 2026-06-25 | 217.09 | 220.18 | 213.03 | 218.93 | +2.44% | 244,200 |
| 2026-06-24 | 213.95 | 219.11 | 212.30 | 213.72 | -0.90% | 340,700 |
| 2026-06-23 | 217.31 | 220.59 | 213.32 | 215.66 | -1.64% | 152,600 |
| 2026-06-22 | 221.30 | 228.00 | 219.06 | 219.26 | -1.58% | 165,100 |
| 2026-06-18 | 222.51 | 227.29 | 216.28 | 222.78 | +2.42% | 286,100 |
| 2026-06-17 | 222.69 | 231.39 | 216.60 | 217.51 | -1.45% | 219,000 |
| 2026-06-16 | 222.05 | 224.67 | 219.09 | 220.70 | -0.44% | 178,800 |
| 2026-06-15 | 229.48 | 232.04 | 220.12 | 221.68 | -1.71% | 204,900 |
| 2026-06-12 | 231.02 | 233.44 | 224.19 | 225.53 | -2.38% | 304,300 |
| 2026-06-11 | 220.27 | 232.54 | 220.20 | 231.02 | +5.99% | 317,900 |
| 2026-06-10 | 214.96 | 223.35 | 212.36 | 217.96 | +1.19% | 428,900 |
| 2026-06-09 | 213.73 | 218.86 | 207.89 | 215.39 | +2.33% | 267,700 |
| 2026-06-08 | 199.75 | 211.46 | 198.00 | 210.49 | +6.45% | 346,800 |
| 2026-06-05 | 211.10 | 213.55 | 197.27 | 197.73 | -7.00% | 230,000 |
| 2026-06-04 | 216.00 | 216.00 | 210.13 | 212.61 | -0.41% | 250,900 |
| 2026-06-03 | 213.14 | 215.25 | 211.44 | 213.48 | +0.69% | 164,900 |
| 2026-06-02 | 214.61 | 216.16 | 211.00 | 212.01 | -0.64% | 229,800 |
| 2026-06-01 | 214.61 | 217.39 | 212.03 | 213.37 | -1.56% | 278,200 |
| 2026-05-29 | 221.95 | 222.51 | 216.52 | 216.75 | -1.99% | 326,800 |
| 2026-05-28 | 217.30 | 222.63 | 215.03 | 221.16 | +1.69% | 204,200 |
| 2026-05-27 | 221.16 | 222.65 | 216.03 | 217.48 | -1.58% | 187,000 |
| 2026-05-26 | 222.62 | 223.10 | 216.33 | 220.97 | -0.51% | 250,700 |
| 2026-05-22 | 208.98 | 224.82 | 208.98 | 222.10 | +6.85% | 461,600 |
| 2026-05-21 | 214.37 | 214.37 | 203.45 | 207.86 | -1.66% | 351,000 |
| 2026-05-20 | 210.50 | 212.47 | 208.06 | 211.37 | +1.13% | 413,000 |
| 2026-05-19 | 206.28 | 211.95 | 206.08 | 209.01 | +0.60% | 322,100 |
| 2026-05-18 | 205.41 | 209.13 | 204.33 | 207.77 | +1.15% | 270,100 |
| 2026-05-15 | 211.18 | 214.05 | 204.94 | 205.40 | -4.85% | 364,700 |
| 2026-05-14 | 222.23 | 224.09 | 215.06 | 215.86 | -1.20% | 402,800 |
| 2026-05-13 | 229.24 | 229.24 | 213.88 | 218.49 | -3.92% | 386,300 |
| 2026-05-12 | 230.64 | 232.76 | 221.44 | 227.41 | -1.94% | 580,000 |
| 2026-05-11 | 230.00 | 237.32 | 226.50 | 231.92 | +0.47% | 415,500 |
| 2026-05-08 | 241.11 | 242.47 | 230.31 | 230.83 | -4.26% | 321,900 |
| 2026-05-07 | 239.90 | 244.77 | 233.05 | 241.11 | +0.35% | 568,000 |
| 2026-05-06 | 235.01 | 240.60 | 225.00 | 240.27 | +2.36% | 477,000 |
| 2026-05-05 | 276.89 | 276.89 | 232.50 | 234.74 | -17.01% | 1,227,000 |
| 2026-05-04 | 280.42 | 286.49 | 274.32 | 282.87 | +0.13% | 237,300 |
| 2026-05-01 | 287.80 | 289.40 | 279.43 | 282.50 | -1.54% | 232,100 |
| 2026-04-30 | 284.71 | 287.62 | 279.61 | 286.92 | +1.80% | 297,800 |
| 2026-04-29 | 287.71 | 293.52 | 279.98 | 281.84 | -1.90% | 194,300 |
| 2026-04-28 | 290.94 | 292.21 | 281.89 | 287.30 | -1.39% | 242,200 |
| 2026-04-27 | 292.61 | 295.50 | 284.15 | 291.34 | -0.43% | 221,800 |
| 2026-04-24 | 285.87 | 295.36 | 284.69 | 292.61 | +2.19% | 259,600 |
| 2026-04-23 | 295.62 | 308.56 | 285.97 | 286.35 | -2.11% | 390,000 |
| 2026-04-22 | 300.39 | 304.22 | 290.28 | 292.52 | -1.46% | 226,200 |
| 2026-04-21 | 309.08 | 311.72 | 293.56 | 296.84 | -3.99% | 247,000 |
| 2026-04-20 | 307.28 | 310.43 | 302.28 | 309.19 | -0.16% | 269,700 |
| 2026-04-17 | 306.47 | 311.27 | 304.27 | 309.68 | +2.86% | 190,900 |
| 2026-04-16 | 305.88 | 307.16 | 299.85 | 301.08 | -1.58% | 175,100 |
| 2026-04-15 | 301.87 | 309.73 | 301.00 | 305.90 | +3.05% | 248,000 |
| 2026-04-14 | 298.11 | 300.72 | 296.70 | 296.86 | -0.20% | 131,500 |
| 2026-04-13 | 293.66 | 300.31 | 290.87 | 297.45 | +1.38% | 190,900 |
| 2026-04-10 | 296.19 | 297.22 | 292.48 | 293.39 | -0.37% | 131,000 |
| 2026-04-09 | 288.80 | 295.98 | 288.80 | 294.48 | +2.08% | 182,500 |
| 2026-04-08 | 283.60 | 293.23 | 283.60 | 288.47 | +4.69% | 236,800 |
| 2026-04-07 | 272.99 | 275.71 | 266.84 | 275.55 | +0.44% | 201,700 |
| 2026-04-06 | 268.69 | 275.59 | 268.69 | 274.33 | +2.32% | 206,300 |
| 2026-04-02 | 258.65 | 272.59 | 255.12 | 268.11 | +1.72% | 260,400 |
| 2026-04-01 | 269.02 | 271.88 | 262.15 | 263.58 | -0.73% | 369,900 |
| 2026-03-31 | 265.95 | 270.55 | 261.50 | 265.51 | +0.30% | 389,100 |
| 2026-03-30 | 278.33 | 278.33 | 263.96 | 264.71 | -2.80% | 394,500 |
| 2026-03-27 | 271.88 | 278.65 | 269.95 | 272.33 | -0.86% | 288,100 |
| 2026-03-26 | 280.86 | 284.00 | 272.77 | 274.70 | -3.47% | 227,100 |
| 2026-03-25 | 288.14 | 288.30 | 279.68 | 284.57 | -0.25% | 166,200 |
| 2026-03-24 | 285.79 | 289.49 | 279.74 | 285.27 | -1.34% | 308,300 |
| 2026-03-23 | 279.34 | 295.70 | 279.34 | 289.13 | +5.35% | 591,400 |
| 2026-03-20 | 282.99 | 285.07 | 270.20 | 274.45 | -3.54% | 692,800 |
| 2026-03-19 | 265.67 | 289.85 | 265.67 | 284.53 | +5.40% | 392,100 |
| 2026-03-18 | 269.44 | 275.29 | 264.70 | 269.95 | +0.32% | 271,200 |
| 2026-03-17 | 279.65 | 280.17 | 262.59 | 269.08 | -3.33% | 323,200 |
| 2026-03-16 | 274.00 | 282.20 | 272.89 | 278.35 | +2.74% | 232,000 |
| 2026-03-13 | 277.02 | 278.00 | 265.85 | 270.92 | -1.66% | 172,500 |
| 2026-03-12 | 278.35 | 279.93 | 272.08 | 275.50 | -1.42% | 366,200 |
| 2026-03-11 | 276.30 | 279.97 | 267.29 | 279.47 | +0.16% | 188,100 |
| 2026-03-10 | 283.90 | 287.00 | 276.26 | 279.01 | -1.12% | 284,388 |
| 2026-03-09 | 260.62 | 282.81 | 256.55 | 282.16 | +5.57% | 444,380 |
| 2026-03-06 | 267.60 | 272.69 | 264.00 | 267.28 | -2.46% | 186,300 |
| 2026-03-05 | 283.80 | 287.77 | 269.72 | 274.03 | -5.04% | 325,100 |
| 2026-03-04 | 287.33 | 292.25 | 281.40 | 288.58 | +0.59% | 275,400 |
| 2026-03-03 | 279.78 | 291.48 | 276.00 | 286.90 | +0.08% | 210,900 |
| 2026-03-02 | 282.01 | 290.75 | 281.43 | 286.67 | +0.52% | 280,300 |
| 2026-02-27 | 287.10 | 288.93 | 280.40 | 285.20 | -1.63% | 144,400 |
| 2026-02-26 | 296.80 | 304.07 | 285.45 | 289.92 | -1.81% | 150,500 |
| 2026-02-25 | 301.66 | 302.99 | 290.38 | 295.26 | -0.88% | 210,600 |
| 2026-02-24 | 294.41 | 306.12 | 294.41 | 297.87 | +1.44% | 299,900 |
| 2026-02-23 | 292.15 | 295.89 | 288.23 | 293.65 | +0.26% | 325,900 |
| 2026-02-20 | 286.29 | 294.84 | 281.03 | 292.89 | +2.38% | 318,300 |
| 2026-02-19 | 273.55 | 286.08 | 271.78 | 286.07 | +4.42% | 374,000 |
| 2026-02-18 | 265.76 | 276.05 | 264.47 | 273.97 | +3.55% | 187,400 |
| 2026-02-17 | 268.60 | 271.90 | 262.76 | 264.58 | -1.50% | 219,300 |
| 2026-02-13 | 267.99 | 273.12 | 264.77 | 268.61 | +1.37% | 139,471 |
| 2026-02-12 | 268.75 | 275.55 | 261.15 | 264.98 | -0.83% | 184,820 |
| 2026-02-11 | 278.26 | 279.93 | 264.00 | 267.20 | -2.52% | 204,382 |
| 2026-02-10 | 276.62 | 277.74 | 268.12 | 274.10 | -0.24% | 191,776 |
| 2026-02-09 | 271.79 | 278.75 | 270.55 | 274.76 | +1.29% | 177,388 |
| 2026-02-06 | 263.97 | 273.63 | 263.77 | 271.26 | +5.07% | 295,387 |
| 2026-02-05 | 253.28 | 262.14 | 249.92 | 258.16 | +2.00% | 388,436 |
| 2026-02-04 | 259.60 | 267.07 | 252.29 | 253.10 | -1.13% | 332,433 |
| 2026-02-03 | 253.94 | 257.62 | 248.94 | 255.99 | +1.29% | 238,797 |
| 2026-02-02 | 247.15 | 256.65 | 243.42 | 252.72 | +1.03% | 455,096 |
| 2026-01-30 | 264.34 | 278.13 | 248.17 | 250.14 | -7.27% | 653,380 |
| 2026-01-29 | 271.95 | 281.00 | 266.31 | 269.74 | -0.61% | 350,077 |
| 2026-01-28 | 279.14 | 282.02 | 269.51 | 271.39 | -2.01% | 315,881 |
| 2026-01-27 | 276.32 | 277.89 | 273.09 | 276.97 | +0.72% | 143,409 |
| 2026-01-26 | 276.85 | 283.56 | 271.57 | 274.99 | +0.00% | 314,703 |
| 2026-01-23 | 287.03 | 293.24 | 272.49 | 274.99 | -4.34% | 251,423 |
| 2026-01-22 | 289.70 | 293.93 | 281.97 | 287.46 | -0.77% | 256,827 |
| 2026-01-21 | 291.17 | 294.93 | 284.46 | 289.68 | +0.58% | 235,961 |
| 2026-01-20 | 285.55 | 291.95 | 278.61 | 288.00 | -1.37% | 127,982 |
| 2026-01-16 | 290.89 | 293.43 | 287.97 | 291.99 | +0.41% | 161,070 |
| 2026-01-15 | 288.08 | 293.22 | 284.96 | 290.80 | +1.45% | 139,719 |
| 2026-01-14 | 274.07 | 289.45 | 272.74 | 286.65 | +4.36% | 247,133 |
| 2026-01-13 | 270.27 | 278.12 | 270.27 | 274.68 | +2.07% | 170,655 |
| 2026-01-12 | 278.72 | 278.72 | 268.24 | 269.12 | -3.51% | 179,712 |
| 2026-01-09 | 279.29 | 283.70 | 278.45 | 278.92 | -0.25% | 202,417 |
| 2026-01-08 | 273.49 | 279.62 | 271.35 | 279.61 | +1.79% | 226,650 |
| 2026-01-07 | 284.52 | 286.63 | 273.21 | 274.69 | -3.47% | 408,952 |
| 2026-01-06 | 269.07 | 285.79 | 264.85 | 284.57 | +4.86% | 521,764 |
| 2026-01-05 | 257.47 | 273.70 | 256.82 | 271.38 | +6.18% | 299,067 |
| 2026-01-02 | 258.02 | 260.84 | 252.73 | 255.58 | +0.20% | 291,087 |
| 2025-12-31 | 262.72 | 264.13 | 254.63 | 255.06 | -3.00% | 253,620 |
| 2025-12-30 | 268.64 | 272.83 | 261.31 | 262.95 | -2.67% | 358,296 |
| 2025-12-29 | 270.49 | 277.03 | 263.55 | 270.16 | +0.13% | 253,050 |
| 2025-12-26 | 268.46 | 270.74 | 267.68 | 269.82 | +0.05% | 63,084 |
| 2025-12-24 | 269.10 | 270.51 | 266.47 | 269.68 | +1.04% | 73,167 |
| 2025-12-23 | 274.55 | 276.88 | 266.02 | 266.91 | -3.01% | 226,958 |
| 2025-12-22 | 266.85 | 277.46 | 266.85 | 275.19 | +4.03% | 247,596 |
| 2025-12-19 | 265.54 | 273.25 | 262.19 | 264.53 | -0.92% | 422,873 |
| 2025-12-18 | 265.47 | 270.88 | 264.21 | 266.98 | +1.77% | 304,411 |
| 2025-12-17 | 262.84 | 266.37 | 259.18 | 262.34 | -0.12% | 252,552 |
| 2025-12-16 | 264.10 | 264.38 | 260.77 | 262.65 | +0.10% | 207,513 |
| 2025-12-15 | 262.30 | 262.93 | 258.25 | 262.38 | +1.13% | 144,480 |
| 2025-12-12 | 264.81 | 264.81 | 257.62 | 259.44 | -2.41% | 161,768 |
| 2025-12-11 | 264.56 | 266.73 | 259.62 | 265.85 | +1.31% | 161,545 |
| 2025-12-10 | 259.57 | 264.54 | 257.40 | 262.40 | +0.80% | 183,782 |
| 2025-12-09 | 263.37 | 266.33 | 260.07 | 260.32 | -0.87% | 253,387 |
| 2025-12-08 | 269.05 | 269.05 | 261.56 | 262.61 | -1.27% | 191,436 |
| 2025-12-05 | 270.63 | 272.05 | 263.39 | 266.00 | -1.85% | 188,990 |
| 2025-12-04 | 272.83 | 275.33 | 270.06 | 271.01 | -0.80% | 204,075 |
| 2025-12-03 | 266.15 | 275.65 | 264.78 | 273.19 | +2.64% | 260,540 |
| 2025-12-02 | 270.00 | 271.38 | 266.03 | 266.17 | -0.83% | 158,612 |
| 2025-12-01 | 268.94 | 274.70 | 266.19 | 268.39 | -0.91% | 278,731 |
| 2025-11-28 | 273.46 | 274.68 | 268.05 | 270.85 | -0.26% | 181,795 |
| 2025-11-26 | 266.91 | 275.50 | 266.91 | 271.56 | +1.59% | 311,053 |
| 2025-11-25 | 258.12 | 269.15 | 253.31 | 267.32 | +4.28% | 379,922 |
| 2025-11-24 | 251.29 | 258.25 | 250.00 | 256.34 | +2.09% | 240,716 |
| 2025-11-21 | 233.74 | 254.37 | 233.74 | 251.10 | +7.32% | 361,789 |
| 2025-11-20 | 243.43 | 248.32 | 231.66 | 233.97 | -1.62% | 602,001 |
| 2025-11-19 | 250.79 | 259.95 | 236.41 | 237.82 | -5.35% | 405,421 |
| 2025-11-18 | 267.47 | 269.00 | 250.08 | 251.26 | -5.91% | 1,511,523 |
| 2025-11-17 | 257.56 | 268.55 | 257.56 | 267.03 | -2.38% | 423,673 |
| 2025-11-14 | 270.14 | 276.38 | 262.45 | 273.55 | +0.25% | 183,544 |
| 2025-11-13 | 280.66 | 283.28 | 268.29 | 272.87 | -3.74% | 205,851 |
| 2025-11-12 | 287.33 | 292.34 | 282.20 | 283.48 | -1.21% | 232,313 |
| 2025-11-11 | 283.37 | 288.33 | 282.89 | 286.96 | +0.50% | 226,700 |
| 2025-11-10 | 286.10 | 288.10 | 283.15 | 285.53 | +0.24% | 175,357 |
| 2025-11-07 | 279.60 | 288.64 | 276.75 | 284.86 | +0.92% | 245,190 |
| 2025-11-06 | 278.92 | 285.00 | 274.61 | 282.27 | +0.23% | 213,203 |
| 2025-11-05 | 280.36 | 283.23 | 274.06 | 281.63 | +1.47% | 109,022 |
| 2025-11-04 | 274.92 | 282.96 | 271.46 | 277.54 | -1.27% | 173,873 |
| 2025-11-03 | 278.28 | 282.58 | 273.30 | 281.10 | +0.95% | 384,030 |
| 2025-10-31 | 251.50 | 282.54 | 246.46 | 278.46 | +14.21% | 644,213 |
| 2025-10-30 | 247.02 | 249.70 | 243.25 | 243.82 | -2.23% | 137,501 |
| 2025-10-29 | 252.93 | 256.78 | 244.79 | 249.37 | -0.63% | 140,520 |
| 2025-10-28 | 252.92 | 254.76 | 249.75 | 250.94 | -1.20% | 129,458 |
| 2025-10-27 | 253.03 | 255.98 | 251.95 | 254.00 | +1.15% | 126,116 |
| 2025-10-24 | 250.14 | 255.34 | 249.44 | 251.11 | +1.45% | 80,578 |
| 2025-10-23 | 244.36 | 248.49 | 241.46 | 247.53 | +1.78% | 65,814 |
| 2025-10-22 | 251.66 | 251.66 | 242.60 | 243.19 | -3.44% | 110,307 |
| 2025-10-21 | 253.12 | 256.98 | 241.24 | 251.86 | -0.88% | 134,837 |
| 2025-10-20 | 248.48 | 257.19 | 248.48 | 254.10 | +3.93% | 137,426 |
Most recent 250 sessions, newest first.
Seasonal returns
Best month historically: Oct (+13.35%). Worst month: May (-12.80%). Based on 2 years of daily data (2025–2026).
FAQ · from the current price data · as of 2026-10-16
Quick answers
What is OSI Systems Inc's (OSIS) latest close?
194.98 on 2026-10-16, from the Closelook data lake's daily price record.
What is OSIS's 52-week high and low?
311.72 high and 186.50 low over the trailing 52 weeks, as of 2026-10-16.
What is OSI Systems Inc's strongest and weakest month historically?
Historically, OSIS's strongest calendar month has been Oct (average +13.35%) and its weakest May (average -12.80%), based on 2 years of daily data (2025–2026).
How many years of seasonality does this cover?
2 years (2025–2026), computed from 449 daily bars in the Closelook data lake.