According to a report from the Wall Street Journal, stocks of both NetApp and VMware have been trading at unusual volumes yesterday. Trading in NetApp spiked to four times the normal level, with investors picking up 38,000 calls that allow them to buy the company’s stock and 5,000 puts that allow them to sell it. NetApp shares closed at $25.55, up 6.1%. Fueling activity in VMW trading was the recent chatter that Cisco could be interested in acquiring VMware...