Currently, about half the coins in the top 50 have outperformed BTC over the past 90 days. This makes sense as there has not been a strong move and mainly choppy price action after the initial big sell off this year. The last proper altcoin outperformance was right before the high in September/October. Currently, the index is pretty much in the middle of nowhere and alts are awaiting BTC's next move.(Daan Crypto Trades)