Tech stocks continue their deep slide on Wednesday, with only a few bright spots in an otherwise grim day of trading. The Nasdaq was off 81 points, or 4.8%, to close at 1616. AT&T ( T) shares also fell, by 7.6% to $23.78 after it missed Wall Street estimates for third-quarter earnings due to Apple's ( AAPL) high upfront costs of its iPhone 3G and its own weak results of its wireline. Meanwhile, Apple shares were up 5.9% to $96.87 after posting a 26% increase in fourth-quarter profit. Revenue rose to $7.9 billion from $6.22 billion in the same period last year. Shares of SanDisk ( SNDK) plunged 31.6% to $10.09 after Samsung yanked its $5.85 billion offer to buy the chipmaker. The news comes two days after SanDisk reported another large quarterly loss and said it would sell 30% of its chip manufacturing capacity to Toshiba. EMC ( EMC) shares were up 3% to $9.98 after posting a 13% increase in sales but a 17% drop in profit in the third quarter. The storage specialist said its fourth-quarter results may come in at the low end of Wall Street's estimates. Shares of Yahoo!> ( YHOO) were up 2.7% to $12.39 after it posted third-quarter results that were in line with analysts' expectations but fell short on revenue. The company said it was cutting 10% of its workforce, or about 1,500 jobs, in the fourth quarter.