US STOCKS-S&P, Dow hit record highs, Nasdaq turns positive for 2016
* Alcoa up after better-than-expected profit
* Oil price bounce boosts energy, materials stocks
* Seagate gains on strong preliminary results
* Indexes up: Dow 0.47 pct, S&P 0.54 pct, Nasdaq 0.62 pct (Adds details, comments, updates prices)
By Yashaswini Swamynathan
July 12 (Reuters) - The S&P 500 and the Dow hit record intraday highs on Tuesday, while the Nasdaq wiped out its losses for the year, buoyed by increasing prospects of global economic health and with Alcoa getting the U.S. earnings season off to a promising start.
The S&P 500 hit 2,151.96 shortly after the open, breaking past its previous record on Monday. The Dow hit an all-time high of 18,353.76.
Alcoa reported a smaller-than-expected drop in quarterly profit, sending the aluminum producer's shares up 4.7 percent and helping boost optimism about the earnings season.
Investors appetite for equities has increased after strong economic data and low returns on government bonds, while easing political tensions in Britain and Japan have reduced some global uncertainties. Continuación...