system
A chat on subreddit /r/wallstreetbets
human
Tell that to the Big Short autist. 
  
 Yes, they're called funds, but they function differently than mutual funds. (When you enter a sell order for a mutual fund, it executes at the close of next day's NAV, ie a wrapper)

gpt
For market moving purposes, how the hell is buying an ETF different than buying the underlying? If the ETF is bid up, an AP will buy the underlying and sell the ETF, keeping valuations in line. 
  
 I have no clue why you're bringing up mutual funds. The NAV pricing has nothing to do with the fact that it's a wrapper.