This movie had included footage of a crowd cheering the Donald Trump mugshot release, when the movie took place before that.
The nurse bought call options that were set to expire on January 16th. Since GME dropped after January 25, she would have made a large profit automatically and not lost her $560,000+ paper profits.
Both Gill and Griffin are served Congressional subpoenas for hearing testimony by commercial process servers in spite of Congress not using commercial process servers and no evidence that either had refused to appear voluntarily without a subpoena.
Jennifer is seen making a future options trade in the dark after hours which is impossible. You can only trade or place options orders during regular market hours which end at 4pm EST.
The University of Texas at Austin students are shown partying at a bar in Austin with zero Covid-19 restrictions, despite classes being shifted to virtual and many students staying in their parents home, not locally.
Hamm's Beer originated in St. Paul Minnesota (the Hamm's building is in downtown St. Paul) not Milwaukee, Wisconsin.
The rise and fall of GME was actually a pump and dump scheme pulled off by Keith Gill aka "Roaring Kitty". This is debatable. Consensus is that it was mainly a "short squeeze" brought about by retail investors battling hedge funds over differing views of the company's fundamentals. This is also the version that's portrayed in the movie.
Keith's trade account shows he has 50,000 shares of Game Stop and that it's value is $17,334,114. But the same page also shows the stock's current price of S41.28 which means the value is just $2,064,000. He then buys 50,000 more shares without the money to do it, and while the market is closed.
A comment from a Reddit user named "Eatther!ch_" was displayed during the live broadcast, but exclamation mark is not allowed in Reddit username.
Gabe's laptop is an M1 Pro/Max 16-inch MacBook Pro which wasn't released until October 2021, ten months after the film is set.
The opening scene on the subway captions "Boston, Massachusetts." The actual subway train is part of the PATH system (Port Authority Trans-Hudson) and arrives at The Journal Square stop in Jersey City, NJ. Boston uses MBTA.
The Austin college bar resembles no bar in Austin, and clearly looks like an Northeastern Ivy League student hangout.