"It's very reminiscent of 1999," says Billionaire Sam Zell on the #WSB reddit rally. "What's going on is a giant game of I can get out before it falls…I'll bet you an awful lot of that stimulus money ended up being speculated in this casino." pic.twitter.com/R8JKioMgXJ This is the aggregate volume for US stocks today. Just about 4x its historical average while at record prices.