Traders in the Chicago pits have been watching these kinds of wagers with an increasing mixture of shock and awe since the start of the Trump presidency. They are used to rapid fluctuations in the S&P 500 index; volatility is common, of course. But the precision and timing of these trades, and the vast amount of money being made as a result of them, make the traders wonder if all this is on the level. Are the people behind these trades incredibly lucky, or do they have access to information that other people don’t have about, say, Trump’s or Beijing’s latest thinking on the trade war or any other of a number of ways that Trump is able to move the markets through his tweeting or slips of the tongue? Essentially, do they have inside information? “There Is Definite Hanky-Panky Going On”: The Fantastically Profitable Mystery of the Trump Chaos Trades | Vanity Fair https://www.vanityfair.com/news/2019/10/the-mystery-of-the-trump-chaos-trades
I haven't read the linked articles, so apologies if I'm repeating something. I don't know what the lag is in publishing a tweet. Presumably it has to go through twitter servers somewhere. Is it far-fetched to think that some high frequency firms or twitter insiders may be getting an advance look at that?
Oh come on now, this is Trump's economy so he IS the market and if the president does it then it is not illegal. Of course he is insider trading, Putin the world's richest man is his idol.