Seeing a spike in Cavium Networks (CAVM, news, chart, volatility) put activity today, with what looks like a reloading buyer of at-the-money June 10 Puts. By noon a total of 1335 have traded, 10x the normal volume at the hour, with most priced for $1.50 as shares trade near flat at 10.57. A seller of these puts was seen on Dec 15th, collecting $2 for 1000 contracts when shares were at the same level and may be closing his position.