The S&P 500 has been above its 50-day moving average for 111 trading days, the longest streak since 2006. Some technicians have point to this fact as cause for concern and suggest the market is "due" for a correction. The historical data does not come to the same conculsion.
There have been eight other instances, since 1962, that the S&P 500 has remained above its 50-day moving average for at least 100 trading days. On average the S&P remains above its 50-day for another 37 trading days and gains, on average, another 2.6% in the next six months.