Back in July, when I first wrote about suspicious trading in a futures contract tied to the performance of the S&P 500 index, there was nary a peep. Maybe everyone was at the beach? Then, in October, I wrote a second story about the trading in these same futures contracts, known as e-minis, and about how it sure seemed like some people who were placing the bets on them at the Chicago Mercantile Exchange were benefitting from exquisite timing, (or something more nefarious) putting themselves in a position to reap millions of dollars in profit, assuming they sold when their future contracts were in the money.

This time, the crowd went wild. My tweet about the story garnered nearly 1 million “impressions” and more than 100,000 “total engagements,” which for someone with around 11,000 followers seemed pretty remarkable. Two congressmen asked the FBI, the Securities and Exchange Commission, and the Commodity Futures Trading Commission to investigate the suspicious trading; a group of Democratic senators also asked for an investigation. Predictably, the CEO of Chicago Mercantile Exchange said there was nothing suspicious going on. These were not the droids you were looking for. There were a bunch of critics, eager to bat down the story. And then Bloomberg reported that the investigators found nothing suspicious either. But my sources remained convinced that the trades were suspect.

Then came the U.S. drone strike that killed Qasem Soleimani at around 1 a.m. local time in Baghdad on Friday, January 3. That was around 5 p.m. in Washington. It took the Pentagon another five hours or so—just before 10 p.m.—before it released its official statement telling the world that Soleimani had been killed. E-minis stop trading on the CME atabout 4 p.m. New York time (3 p.m. Chicago time) each day. There is then an hour of what’s known as aftermarket trading. Then there is a one-hour break in trading. Night trading in E-minis begins at 6 p.m. New York time, hours before the Pentagon made its official announcement about Soleimani’s killing. For the first two and a half hours of the night trading on January 2, the volume in the E-mini market was around 1,000 contracts every 10 minutes, according to the trading records from that night made available to me. Nothing particularly remarkable.

But then, around 8:30 p.m. ET, or still some 90 minutes before the Pentagon made its announcement, trading picked up considerably. The S&P 500 index was then at 3260. Suddenly, a trader or group of traders—but most likely not a single trade or trader—began making big bets that the S&P index would fall by selling the March 2020 E-mini futures contract. At 8:30 p.m. ET, 2,250 E-mini contracts were sold; at 8:40 p.m. ET, 5,790 E-mini contracts were sold; 10 minutes later, 7,113 E-mini contracts were sold. In sum, in the 70 minutes between 8:30 p.m. ET and 9:40 p.m. ET, 76,000 E-mini contracts were sold. By then, the S&P 500 index had dropped to 3236. After the attack was announced, the S&P 500 index dropped to 3206, a drop of around 50 points. A 50-point drop in the index generates a profit of $2,500 per contract, assuming those contracts were sold short, which in this case they were. 76,000 contracts sold short, at a gain of around $2,500 per contract, equals some $190 million in profit—on paper anyway—for whomever, or group of whomevers, was clever enough or lucky enough or informed enough about the impending bombshell news out of the Pentagon that the important Iranian leader had been killed. “Did someone or a group foresee the execution of top general of Iran?” an E-mini trader wondered in an email sent to me the other day. “…When volume goes from 1,000 every 10 minutes and jumps to as high as almost 17,000 in 10 minutes, something is going on.”