Imagine this... 21% drawdown on just one trade, after doubling down time and time again to try an salvage the bad trade, rather than setting a stop (e.g., 5%), taking your losses, and starting a new trade. The net result of this purely Martingale strategy - a $70,841 loss on one trade alone! The only reason this person's strategy is still alive is because he's hyper-extending his leverage while doubling down on losing bets, then utilizing a pray-and-wait approach in hopes of a bounce-back. Though he makes money (so far), the risk is too great and the technique (Martingale) proven to result in disaster eventually.

Despite appearances and track record, this strategy is reckless and employs Martingale techniques to turn losers into winners... sometimes employing extremely high leverage and exposure. Rather than cutting losses and entering at a more favorable point later, the strategy simply "doubles down" multiple times, then waits for mean reversion. It will also enter a trade (a short on UVXY) on a Friday with no stop-loss, exposing the position through the weekend (and night market) to economic uncertainty. The developer is unresponsive when your question involves a losing trade.