Stock indexes drifted to a mixed finish on Wall Street Thursday, as some heavyweight technology and communications sector stocks offset gains elsewhere in the market. The S&P 500 fell less than 0.1% after spending the day wavering between small gains and losses.

Many Wall Street bears have retreated in the face of this year's blistering stock rally. The few that remain see a steep correction on the horizon.

The S&P 500 climbed 0.7% in morning trading after erasing an initial drop. The Dow Jones Industrial Average was up 311 points, or 0.7%, as of 10:40 a.m. Eastern time, while the Nasdaq composite gained 0.7%.