Israel says it is investigating claims that some investors may have known of Hamas’s attack on Israel before it took place on October 7.

An academic study suggests investors betting against the Israeli economy may have made large sums.

Researchers found significant short-selling in the run-up to the attacks.

Short-selling is when investors try to make money on shares, bonds, or other financial instruments that they think will fall in price.

They arrange to sell shares they do not yet own at the current price, hoping to buy them later at a cheaper price before the shares change hands, so they can then bank the difference.