US STOCKS-Wall St mostly gains on earnings; biotechs rally
* Apple rallies after results, boosting tech names
* Boeing falls despite profit rise, weighing on Dow
* Biotechs rally for fourth straight session
* Dow down 0.1 pct, S&P up 0.2 pct, Nasdaq up 0.4 pct (Updates to afternoon trading)
By Ryan Vlastelica
NEW YORK, July 23 (Reuters) - U.S. stocks were largely higher on Wednesday, with the S&P 500 hitting another record high after bullish results from tech giants Apple and Microsoft, though technical resistance and conflicts in Ukraine and the Gaza Strip kept gains in check.
Biotech stocks were among the biggest gainers of the day, boosted by some strong results and drug trial data. The Nasdaq Biotech index jumped 1.9 percent in its fourth straight day of gains.
The S&P information technology index rose 0.3 percent, one of the strongest sectors of the day. Apple Inc and Microsoft Corp rose following results posted late Tuesday, with Apple up 3 percent to a 22-month high as concerns faded about the iPhone maker's margins.
Dow component Microsoft was up 0.3 percent after it said it aimed to get its loss-making Nokia phone unit to break even within two years. Continuación...