Unusual Options Activity Report 3.19.2013

Chart Sp500 emini OptionsPaper sold 5000 ERIC April 13 Puts for $.70 (4.6 times usual volume) when stock was trading $12.81
Paper bought 3683 ALTR June 34 Calls for $2.55 (2.8 times usual volume) when stock was trading $35.04
Paper bought 19,108 EA June 23 Calls for $.10 (12.7 times usual volume) when stock was trading $17.03
Paper bought 1500 SSRI June 10 Calls for $1.30 (21.4 times usual volume)when stock was trading $10.41
Paper bought 20,562 MU April 10 Calls for $.31 when stock was trading $9.34