By Michael Ashbaugh, MarketWatch
U.S. stocks are higher early Wednesday, rising as the major benchmarks build on a strong February start.
In the process, the S&P 500 and Nasdaq Composite have challenged their respective record closes — S&P 3,855 and Nasdaq 13,636 — as they vie to register their latest records. Both benchmarks have extended a bullish reversal from relatively well-defined support.
