US research shows that 5 days before the Hamas attack on Israel, there was a very large increase in short-selling of Israeli company stock on the New York stock exchange, ie, people betting money that Israeli shares would drop significantly in value. Typically as a trader you would only short-sell a company if you happened to know in advance that something disastrous was about to happen to them.
The trading of 227,820 shares in the Israel Exchange Traded Fund was orders of magnitude higher on 2 October than the usual 2,000 shares.
So Hamas not only instigated a blood-soaked holocaust, it looks like they might have cleaned up on the stock market while they were at it.