Stocks have only done this 3 times in the last 100 years

5:05 PM ET Wed, 19 Nov 2014

If the market is trading at the current level or higher at the end of the year, it will only be the fourth time in the past 100 years that the S&P 500 has enjoyed had three consecutive years of double-digit percentage gains. Does that give investors reason to worry about the recent rally?