While the battle of whether stocks would finish the quarter up or down wasn’t settled till the final moments, one statistic was clear all day: the Standard & Poor’s 500 Index was destined for its worst first half to a year since 2010. The prospects for higher interest rates, a slowdown in economic growth and Greece’s travails have frozen a market that rose 47 percent between 2011 and 2013. “The returns we’ve all had in the past three to five years are in the rear-view mirror,” John Fox, director of research at Fenimore Asset Management in Cobleskill, New York, said by phone.