That was a good read, and that's also a huge profit he made after the Napoleon battles (at the time) from 500K pounds to 1 million pounds, but I was referring to Black Wednesday in 1992 when Britain took the pound out of the ERM because of speculators.
I would like to point out he did not invest 45000 he spent 45000 out of pocket. He took a loan of 405,000 and if the market decided to fully tank
he would lose the 45000 and part of or maybe all of the 405000 he borrowed.
So it is misleading to say he turned 45000 into 85000 since he was responsible for a 405000 loan.
That equates to 405,000 (9x) + 45000 (1x) = 450,000 traded at 10x leverage, and the amount he hedged with his own money was very risky since the loan was so big no exchange will ensure that entire amount. It's also ironic that high leverage is a selling point of many exchanges that you see them advertise but if someone were to trade with that high leverage and lose, the exchange itself can lose a lot of money even with average sized user funds.