The S&P 500 pulled back slightly from its record high on Friday. But don't mistake a quiet session for a weak market. The index just posted its third consecutive weekly gain. And perhaps the most interesting number right now isn't the S&P 500. It's the VIX. At 14.25, volatility has fallen to its lowest level since December. Wall Street is almost… too comfortable. ANOTHER WEEK, ANOTHER GAIN $S&P 500(.SPX)$ : -0.17%. $NASDAQ(.IXIC)$ : -0.28% and Dow Jones: -0.20% But zoom out. The S&P 500 has now delivered three straight weeks of gains and remains close to record territory. More importantly, investors barely reacted to several potentially negative headlines. Retail sales unexpectedly decli