Crypto trader Ali Martinez predicts a possible decline to $2,300 for Ethereum, followed by a rebound towards $4,000.Institutional inflow and Ethereum's DeFi volumes could contribute to the altcoin's potential surge to $4,000.Altcoins like XRP, Solana, and Cardano are showing positive momentum and gains in the past 24 hours.While a recovery in Bitcoin's price may benefit other assets, meme coins are attempting a slight recovery.