Only 31 cryptocurrencies outperformed Bitcoin over the past 90 days, according to CryptoRank data. During this period, BTC gained 16.6%, while BTW led with a 219% surge, followed by QNT at 184%, NIGHT at 171%, and RAY at 151%. The narrow list of top performers highlights how difficult it has been for altcoins to beat Bitcoin's steady climb in recent months.