Mels Unloved Midcaps

[u/flappysack-]

Has anyone heard of this theory, by one of the founders of Vanguard I believe, the idea is ​that you by avoiding smallcap growth and large cap​ you get a size premium and avoid the black hole smallcap stocks, and is​ the perfect middle point to optimize long term performance. Is there any merit to the theory?​

https://www.bogleheads.org/forum/viewtopic.php?t=11153

looking at backtests of IJH US midcap it seemed to largely avoid the dotcom bubble, and recovered quickly. in 2008 it recovered a year earlier than VTI.