OSIS – OSI Systems, Inc. – Options volume on OSI Systems today is well above the average daily level for the stock, with upwards of 7,500 contracts in play as of midday in New York versus average daily volume of 57 contracts. The surge in options trading on OSI Systems coincides with a 40% decline in the price of the underlying shares to $39.00 today, the lowest level since October of 2011. The company provided an update on a recent $60 million order cancellation by the Transportation Security Administration (TSA). Call options are more active than puts, with the call/put ratio hovering near 2.0 as of 12:40 p.m. EST. Some traders appear to be selling out of the money December and January 2014 expiry calls, while others step in to buy the contracts perhaps in the expectation that shares rebound in the near future.