Legendary investor Jeremy Grantham speaks out about the rule changes the Nasdaq made to get SpaceX into the Nasdaq 100 quicker.

SpaceX joins Nasdaq-100 after IPO, bypassing traditional three-month trading rule for inclusion in the tech-heavy index.

"It will be amazing, by the way, if it doesn’t collapse," Grantham said.

Gary Black highlighted Jeremy Grantham's SpaceX warning after its Nasdaq 100 entry, saying he holds no position in the stock.

Legendary investor Jeremy Grantham speaks out about the rule changes the Nasdaq made to get SpaceX into the Nasdaq 100 quicker.