Written by Mark DeCambre Five years in the making. That is the time it has taken for the S&P 500 stock index to travel from its previous thousand-point plateau to an intraday milestone of 3,000 for the first time in its history. It remains to be seen if the benchmark can close at that level, but the sojourn above that mark may hold some importance. The stock gauge first closed at 2,000 on Aug. 26, 2014, according to Dow Jones Market Data. Although it may be just another number for some on Wall Street, for others the move for the broad-market benchmark reflects a round-number level that investors consider bullish for market sentiment. “Momentum could continue to push markets higher in the next few days now [that] the Fed’s stance is more clear,” wrote Adrian Lowcock, head of personal investing at investment platform Willis Owen, in a Wednesday note. The S&P 500’s