Vaporized! The Halloween horror story of MF Global

It's ten years today, but a story like this one sticks with you. Maybe because the mystery of the missing customer millions was never really solved?

Chicago. Halloween morning, 2011.

It was a bit chilly as the sun came up at 7:21 a.m. Traders in the futures and options pits at the Chicago Board of Trade arrive early since they’re always an hour behind New York.

In 2011 the CBOT live trading floors, like newsrooms, were full of Bloomberg terminals and thousands of computer monitors, ticking off the new…