The ideal bagholder is one who adds more on every downturn (buy the dip) and who refuses to sell (diamond hands), holding on for the inevitable Fed-fueled rally to new highs.
Old hands on Wall Street have been wary of being bearish for one reason, and no, it's not the Federal Reserve: the old hands have been waiting for retail--the individual investor-- to go all-in stocks. After 13 long years, this moment has finally arrived: retail is all in.
If you doubt this, just look at record highs in investor sentiment, margin debt and the Buffett Indicator (see chart below). Current valuations are so extreme that the previous extreme in the 2000 dot-com bubble now looks modest in comparison.