[Planet Money](https://www.npr.org/sections/money/2015/10/14/448718171/episode-657-the-tale-of-the-onion-king https://www.npr.org/sections/money/2015/10/14/4487

[Planet Money](https://www.npr.org/sections/money/2015/10/14/448718171/episode-657-the-tale-of-the-onion-king https://www.npr.org/sections/money/2015/10/14/448718171/epis...) had an episode a few years ago but I don’t think they covered the box office futures ban bolted on during Dodd-Frank.