Deliberate mistake: Eddie is reported in the newspaper as being a mystery trader getting incredible returns. By whom? He is using an online account, so not a broker who can blab to others. The brokerage would not say anything or they would face massive privacy breach fines from the SEC.
Limitless (2011)
1 deliberate mistake - chronological order
Directed by: Neil Burger
Starring: Robert De Niro, Bradley Cooper, Abbie Cornish
Plot hole: If Bradley Cooper was able to "quintuple" his money every day in the market as he claims to have done, he would have been able to earn the $100k he borrowed from a loan shark within a few days, starting from $800. Alternatively, he is shown in one scene winning a pot in poker where he could presumably also make a large amount of "seed" money from gambling. There was no need to borrow such a small sum of money from a loan shark, making the entire sub-plot unnecessary.
Carl Van Loon: You do not know what I know because you have not earned those powers. You're careless with those powers, you flaunt them and you throw them around like a brat with his trust-fund. You haven't had to climb up all the greasy little rungs. You haven't been bored blind at the fundraisers. You haven't done the time and that first marriage to the girl with the right father. You think you can leap over all in a single bound. You haven't had to bribe or charm or threat your way to a seat at that table. You don't know how to assess your competition because you haven't competed. Don't make me your competition.
More questions & answers from Limitless
Suggested correction: The main character says he did quintuple his money four days in a row, not that he could continue to do so. "Presumably" he could do anything, like robbing a bank. Gambling is not a secure source of income, even with knowledge of the odds and every tell, he could also lose a lot of money.
He takes the seed money and then goes on to make a couple million with it on the stock market. There's really no reason he couldn't have just done that with the $800 seed money (also what the hell happened to that $10-20k stack of cash he took from Vernon's apartment? Somehow that was dwindled down to only $800?). The time constraint was totally artificial. He didn't need to conquer the world in 2 months except for the needs of the plot.