April 1, 2016 at 4:46 pm
The S&P 500  introduced its first stock index in 1923. From its inception until 1957, its primary stock market index was the S&P 90. This was a value weighted index based on 90 stocks. It was not until 1957 that the S&P became what we know today as the S&P 500. To get listed on [&he...Read More »