> "In reality you'd be one of thousands of people holding HTZ calls or TSLA puts in your Robinhood account." Yes, but of those people, a lot of them probably h

> "In reality you'd be one of thousands of people holding HTZ calls or TSLA puts in your Robinhood account." Yes, but of those people, a lot of them probably have a history of buying TSLA puts because they are generally bearish on the stock. Or a history of buying calls on HTZ. And they've lost a lot of money in the past over this, because TSLA keeps going up and HTZ keeps going down. In other words, I can look at all buyers of HTZ and TSLA stocks and most likely eliminate those with histories of buying puts or calls on these stocks. So now I have a smaller pool of people who suddenly bought HTZ or TSLA puts/calls. Of those, I can probably eliminate anyone with small positions. This isn't worth risking for a profit of a few thousand dollars. Sure I can get a few friends together to invest from their accounts, but the more people i involve, the more i risk. Plus, i can't just do family members or friends who live nearby (unless i'm in a major city), because it'll look strange if a group of people who are related or live close to each other are running the same trades at the same time. So now they have whittled it down quite a bit. So i bring in the FBI and I start investigating my much smaller list and I target it towards people with computer savviness. It's can probably eliminate accountants and many others who most likely don't have skills to hack twitter. So it's a smaller group of people and the chances of getting caught are no longer so small (not to say it's impossible to get away with it though).