Amkor (AMKR, news, chart, volatility) is up 59 cents to $3.16 and options volume is running at 15 times the usual levels amid increasing interest in March 2.5 calls. 6,300 have traded in lots of 750 and fewer contracts. With 84 percent trading offerside and existing open interest of 2,285, looks like opening call buying, perhaps on hopes the rally in the chipmaker can continue.