The Essex Boys: How Nine Traders Hit a Gusher with Negative Oil Prices (2020)

* https://archive.is/https://www.bloomberg.com/news/features/2...

* https://archive.is/6ZXMq

Fourteen minute video on the topic:

* https://www.youtube.com/watch?v=F7_WXUMFM_w

Also from 2020, "The day oil was worth less than $0 — and nobody wanted it":

* https://www.cbc.ca/news/business/oil-negative-price-1.553899...