The Dow Jones Industrial Average rallied 50.22 points to end at 14,447.29, finishing at a fresh high, led by Boeing and Merck. The blue-chip index is up more than 10 percent for the year and on track for its biggest quarterly gain since the fourth quarter of 2011.

The S&P 500 edged up 5.04 points to finish at 1,556.22. The index is nearly 0.5 percent from its record closing high of 1,565.15, hit on October 09, 2007. The Nasdaq rose 8.51 points to close at 3,252.87.

The CBOE Volatility Index (VIX), widely considered the best gauge of fear in the market, ended below 12 for the first time since April 2007.

(Read More: The Big Bet That the S&P Will Soon Make an All-Time High)



Most key S&P sectors ended higher, led by financials, while telecoms finished in the red.