To put things in perspective, over the previous four instances where BTC margin longs (bulls) significantly increased, investors had one profitable trade, two that were mostly neutral and one considerable loss.
Some might say odds still favor those tracking the indicator, but one must remember that whales and arbitrage desks could easily crash the market when closing their positions. In such cases, those following the strategy might arrive late to the party and come out at a loss.
Will the current Bitfinex margin longs increase result in extreme profits? It might depend on how traditional markets, mainly tech stocks, perform over the next couple of weeks.