Programming note: Money Stuff will be off tomorrow, back on Wednesday.
The story is: Jane Street Group, the proprietary trading firm, found some clever and counterintuitive trading strategy and made a lot of money doing it. Then some of the guys who did the trade left Jane Street for Millennium Management, where Jane Street thinks they are doing the same trade. Now Jane Street is making less money doing the trade, and is unhappy about this. So it sued the guys, and Millennium, for theft of trade secrets. We discussed the lawsuit last week.
