Why match fixing is criminal — but trading on geopolitics isn’t

Minutes before Donald Trump posted a market-moving message on Iran, trading volumes in S&P 500 futures and oil markets suddenly surged.

The spike was sharp, concentrated, and unusually well-timed. To outside observers, it raised an obvious question. Was this some kind of fluke, sharp analysis, or something closer to inside information?

Just minutes before Trump's announcement of talks with Iran, massive trades hit the market.

In one move, $1.5 billion in S&P 500 futures were purchased.