OSI Systems (OSIS) Shares Cross Below 200 DMA By: Market News Video June 20, 2017 at 16:32 PM EDT In trading on Tuesday, shares of OSI Systems, Inc. (OSIS) crossed below their 200 day moving average of $73.02, changing hands as low as $72.91 per share.. Read More >> Related Stocks: O S I Systems Inc S&P Tech Hardware Et SPDR