Shares of 99 Cents Only Stores (NYSE:

) are lower on the session by 0.64%, trading at $20.24. Overall put volume is now running at 7.20x the daily average, with 15% of all puts traded being purchases on the offer. 1,835 contracts have traded on the session so far. 99 Cents Only Stores is a retailer of primarily consumable general merchandise. As of March 27, 2010, the company operated 275 retail stores with 206 in California, 32 in Texas, 25 in Arizona, and 12 in Nevada.