If you invested $1000 in OSI Systems, Inc. (OSIS) 10 years ago, it would be worth $2,919.64 as of October 22, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $2,071.86, while $1000 invested 1 year ago would be worth $809.78. This corresponds to total returns of 191.96%, 107.19%, -19.02%, respectively, with annualized returns of 11.31%, 15.67%, -19.02%.
Custom investment amounts or purchase dates can also be explored using the Stoculator calculator. Past performance does not guarantee future results.
Date Range:
| Date | Open | Close | Adj Close | High | Low | Volume |
|---|---|---|---|---|---|---|
| October 21, 2026 | 196.24 | 196.93 | 196.93 | 198.79 | 195.62 | 183,974 |
| October 20, 2026 | 194.04 | 194.86 | 194.86 | 196.42 | 192.24 | 161,011 |
| October 19, 2026 | 195 | 193.97 | 193.97 | 196 | 192.01 | 160,712 |
| October 16, 2026 | 196.21 | 194.98 | 194.98 | 196.21 | 192.96 | 202,868 |
| October 15, 2026 | 192.99 | 196.21 | 196.21 | 197.42 | 190.94 | 134,531 |
| October 14, 2026 | 192.11 | 192.68 | 192.68 | 194.13 | 190.21 | 167,722 |
| October 13, 2026 | 195.54 | 194.7 | 194.7 | 197.7 | 194.05 | 163,423 |
| October 12, 2026 | 195.49 | 195.32 | 195.32 | 196.96 | 193.36 | 171,832 |
| October 09, 2026 | 193.72 | 194.91 | 194.91 | 195.52 | 190.07 | 134,839 |
| October 08, 2026 | 192.75 | 193.36 | 193.36 | 196.52 | 191.09 | 158,797 |
| October 07, 2026 | 195.53 | 194.05 | 194.05 | 197.41 | 191.09 | 224,250 |
| October 06, 2026 | 199.55 | 198.56 | 198.56 | 199.55 | 196.43 | 121,898 |
| October 05, 2026 | 197.73 | 197.87 | 197.87 | 199.53 | 194.24 | 198,892 |
| October 02, 2026 | 199.4 | 196.78 | 196.78 | 199.4 | 195.9 | 149,351 |
| October 01, 2026 | 195 | 196.62 | 196.62 | 199.39 | 190.24 | 174,917 |
| September 30, 2026 | 193.4 | 194.37 | 194.37 | 196.02 | 190.77 | 208,336 |
| September 29, 2026 | 192.86 | 192.3 | 192.3 | 193.02 | 190.44 | 174,284 |
| September 28, 2026 | 197.62 | 193.04 | 193.04 | 197.62 | 192.29 | 123,326 |
| September 25, 2026 | 202.48 | 197.24 | 197.24 | 202.93 | 195.37 | 197,155 |
| September 24, 2026 | 202 | 201.3 | 201.3 | 205.15 | 200.15 | 134,204 |
| September 23, 2026 | 200.83 | 203 | 203 | 203.78 | 198.93 | 213,289 |
| September 22, 2026 | 203.18 | 200.84 | 200.84 | 203.45 | 199.23 | 183,913 |
| September 21, 2026 | 199.2 | 200.4 | 200.4 | 202.06 | 196.43 | 162,896 |
| September 18, 2026 | 200.46 | 197.71 | 197.71 | 202.67 | 197.06 | 395,503 |
| September 17, 2026 | 206.06 | 200.35 | 200.35 | 206.06 | 198.14 | 205,367 |
| September 16, 2026 | 205.63 | 201.75 | 201.75 | 206.38 | 200.2 | 270,656 |
| September 15, 2026 | 198.26 | 202.59 | 202.59 | 202.8 | 195.32 | 282,529 |
| September 11, 2026 | 203.11 | 204.29 | 204.29 | 205.44 | 200.83 | 236,129 |
| September 10, 2026 | 196.05 | 201.25 | 201.25 | 202.21 | 195.69 | 267,760 |
| September 09, 2026 | 202.75 | 197.49 | 197.49 | 205.77 | 195.76 | 360,731 |
| September 08, 2026 | 203.64 | 204.25 | 204.25 | 207.26 | 201 | 332,833 |
| September 04, 2026 | 206.23 | 204.15 | 204.15 | 207.49 | 201.43 | 202,070 |
| September 03, 2026 | 207.93 | 206.62 | 206.62 | 207.93 | 201.1 | 284,326 |
| September 02, 2026 | 208.52 | 206.75 | 206.75 | 210.8 | 206.11 | 199,204 |
| September 01, 2026 | 207.93 | 208.52 | 208.52 | 210.47 | 204.83 | 192,270 |
| August 31, 2026 | 207.16 | 207.91 | 207.91 | 210.62 | 205.22 | 248,235 |
| August 28, 2026 | 210.27 | 206.64 | 206.64 | 212.21 | 205.7 | 215,090 |
| August 27, 2026 | 211.31 | 210.89 | 210.89 | 213 | 207.79 | 313,366 |
| August 26, 2026 | 203.92 | 211.04 | 211.04 | 211.43 | 203.67 | 347,866 |
| August 25, 2026 | 207.11 | 204.07 | 204.07 | 208.99 | 202.85 | 485,353 |
| August 24, 2026 | 206.44 | 204.05 | 204.05 | 209.99 | 202 | 857,522 |
| August 21, 2026 | 196 | 206.73 | 206.73 | 207.82 | 186.5 | 1.29M |
| August 20, 2026 | 219.32 | 218.09 | 218.09 | 221.4 | 214.17 | 353,612 |
| August 19, 2026 | 221 | 220.92 | 220.92 | 223.73 | 217.97 | 163,433 |
| August 18, 2026 | 226.47 | 218.73 | 218.73 | 226.65 | 218.52 | 162,580 |
| August 17, 2026 | 232.21 | 229.87 | 229.87 | 234.73 | 226.59 | 125,486 |
| August 14, 2026 | 228.56 | 228.27 | 228.27 | 232.91 | 226.98 | 132,263 |
| August 13, 2026 | 234.35 | 228.56 | 228.56 | 236.83 | 226.95 | 149,316 |
| August 12, 2026 | 236.8 | 231.57 | 231.57 | 236.8 | 228.55 | 196,513 |
| August 11, 2026 | 235.09 | 233.2 | 233.2 | 236.92 | 231.5 | 170,453 |
| August 10, 2026 | 236.06 | 232.61 | 232.61 | 239.07 | 231.62 | 210,667 |
| August 07, 2026 | 238.77 | 236.23 | 236.23 | 239 | 234.26 | 93,877 |
| August 06, 2026 | 236.26 | 237.1 | 237.1 | 240.9 | 233.7 | 96,612 |
| August 05, 2026 | 236.24 | 235.09 | 235.09 | 237.25 | 233.52 | 133,439 |
| August 04, 2026 | 228.82 | 236.6 | 236.6 | 237.46 | 225.3 | 159,010 |
| August 03, 2026 | 222.37 | 225.57 | 225.57 | 227.13 | 221.04 | 206,001 |
| July 31, 2026 | 222.07 | 221.39 | 221.39 | 223.9 | 218.62 | 198,804 |
| July 30, 2026 | 215.96 | 219.92 | 219.92 | 220.38 | 212.08 | 107,436 |
| July 29, 2026 | 219.27 | 214.02 | 214.02 | 224.03 | 213.55 | 142,418 |
| July 28, 2026 | 217.3 | 220.64 | 220.64 | 222.57 | 217.3 | 128,404 |