Volume Spike Investor

SanDisk Corp. (Nasdaq: SNDK) shares are down more than 6 percent to $17.70 in very early premarket trading around 7:30 a.m., on volume of less than 5,000 shares. The stock was among the most active after hours, after it beat EPS expectations and returned to profitability, but guided cautiously. The company expects third-quarter revenue in the range of $725 million to 775 million, short of analyst expectations of $776 million. — Mike Tarsala