OSI Systems (OSIS) shares rallied 4.9% in the last trading session to close at $284.57. This move can be attributable to notable volume, with a higher number of shares being traded than in a typical session. This compares to the stock's 3.3% gain over the past four weeks.OSI Systems is benefiting from strong revenue growth across its Security, Optoelectronics, and Healthcare divisions, driven by robust service revenues and global demand for advanced security technologies.This airport security and full-body ...