Altcoins are currently outperforming Ethereum (ETH) in their ETH pairs, a trend expected to continue until ETH touches its 21-week Exponential Moving Average (EMA). Once ETH tags the 21W EMA, Altcoins will likely begin to underperform ETH again. Investors should monitor ETH's price action relative to its 21W EMA for a potential shift in Altcoin performance.