You know why he did that though don't you?
https://www.bloomberg.com/news/features/2018-06-25/brexit-big-short-how-pollsters-helped-hedge-funds-beat-the-crash
The scumbag.
I recall the night of the completely ill advised referendum. At about 11pm Betfair had Leave at 15s. I ALMOST stuck £100 on just so that whatever happend I could wake up happy in some way. I didn't.
I've ignored odds since.