This bull market just passed the 3.6 year bull market of '62-'66 for the 8th longest since WWII. What matters here is how long those other bull markets that made it this far lasted. The other seven lasted an average of more than 7 total years. Image if this bull was only halfway over? Boy, that'll upset a lot of bears. ;)
The Standard & Poor’s 500 Index (S&P500) is a capitalization-weighted index of 500 stocks designed to measure performance of the broad domestic economy through changes in the aggregate market value of 500 stocks representing all major industries