U.S. equities closed Tuesday trading with only moderate gains -- not one stock index closed more than 0.2% higher than where it began for the day -- and yet, the mild increases were good enough to set some new records. Buoyed by positive economic data at home and optimism over Greece's debt talks abroad, the Nasdaq Composite closed at a new all-time high and the S&P 500 hit a level not seen in several weeks.