FYI: S&P Dow Jones Indices’ recent paper “The S&P MidCap 400®: Outperformance and Potential Applications” shows that mid-cap stocks have often been overlooked in favor of other size ranges in investment practice and in academic literature. This is despite the fact that the S&P MidCap 400 has outperformed the S&P 500® and the S&P SmallCap 600® at an annualized rate of 2.03% and 0.92%, respectively, since December 1994. While the mid-cap index was, on average, roughly 15% more volatile than its large-cap counterpart, its higher returns more than compensated over longer period
Regards,
Ted
https://www.indexologyblog.com/2019/07/22/get-to-know-mid-cap-u-s-equities/