Friday's Tech Winners & Losers

Shares of SanDisk(SNDK Quote) were among technology's biggest losers Friday, plunging 20% after worries about the flash memory company's pricing overshadowed better-than-expected third-quarter results.

SanDisk posted earnings of $103.2 million, or 51 cents a share, down from $107.4 million, or 55 cents a share, a year earlier. Excluding items, SanDisk earned 61 cents a share, surpassing Wall Street estimates of 57 cents. Sales surged 27% to $751 million. Analysts expected a top line of $737 million.

SanDisk said, however, that there was a 60% drop in average selling price per megabyte, a rate of decline that was faster than expected. Both Citigroup and Oppenheimer cut their ratings on the stock, and shares were sliding $12.23 to $49.50 on extremely heavy volume.

Shares of Google(GOOG Quote) rose 7% after the Internet search giant posted third-quarter results that blew by estimates. The company earned $733.4 million, or $2.36 a share, on revenue of $2.69 billion. Excluding stock-based compensation costs and stripping out commissions that Google pays to its ad partners, the company earned $812.3 million, or $2.62 a share, on revenue of $1.86 billion. Analysts polled by Thomson First Call expected earnings of $2.42 a share and revenue of $1.81 billion. In last year's third quarter, Google earned $381.2 million, or $1.32 a share, on total revenue of $1.58 billion. Shares were up $29.43 to $455.49.