Markets are traditionally forward-looking, and the Bitcoin (BTC) Spot ETF proved to be no exception.

Interestingly, the cryptocurrencies that experienced the most significant gains after the ETF got the green light were not Bitcoin-related.

Notably, altcoins such as Xai (XAI), Ethereum Classic (ETC), Ethereum Name Service (ENS), and Galaxy Fox (GFOX) saw a surge.

Observing these altcoins could provide valuable insight into future market trends.