BuggedOut said:
Is anyone familiar with the Martingale betting system :-
https://en.wikipedia.org/wiki/Martingale_(betting_system)
This is what leon is playing. Works great for like 99% of the time while ever you keep "doubling down"...until of course you have such a bad run that you run out of money and can't afford to double down that one last time....
That won't be an issue here if leon isn't really trading or is using monopoly money. Therefore it is the perfect system for leon to scratch out a "winning record" and build up a forum fan club.
I am genuinely afraid for anyone who legitimately follows his trades. To do so would be
highly irresponsible.
Martingale system is designed for a 1:1 risk reward (i.e. blackjack tables) not shorting stocks. Martingale was a gambler and if the system truly worked than we should all forget learning anything and just go to the casinos.
The reason it fails is due to poor risk management. Let's say you lose 7 "bets" in a row and started with $1,000. That is 1K, 2K, 4K, 8K, 16K, 32K, 64K for a total of 127K lost you would also have to have a bank roll of 255K just to make that 8th winning bet (128K plus 127K) all to win $1,000.
Example: if you had a win streak of 7 bets you would make 7K, but if you then had the same streak of losses then see above loss amount.
If you are wanting to learn more about risk management I recommend Optimal f as a book to read. But basically it says never to risk more than 3% of your bank roll on any trade.