The cryptocurrency market is currently displaying signs of a textbook rotation phase. Following an early May breakout where Bitcoin dominance (BTC.D) reached 61.2%, the metric has faced four consecutive days of downward pressure.

Signs of an Altcoin Rotation

In less than 24 hours, the Altcoin Season Index has climbed by more than 10 points. This surge reinforces a classic market setup where capital shifts from Bitcoin into various altcoins.

Historically, altcoin rallies struggle to maintain momentum unless Ethereum, the largest altcoin, shows strength against Bitcoin. A robust ETH/BTC ratio is often necessary to facilitate deeper capital flow across the broader market.

Ethereum's Influence on Market Momentum

Currently, the ETH/BTC ratio has seen a rebound of approximately 0.7% following four consecutive weeks of decline. This suggests that the potential rotation may be expanding beyond Bitcoin.

Liquidity Drivers and On-Chain Signals

A key driver behind this rotation is the decline in USDT dominance. This trend implies that investors may be hesitant to allocate further funds into Bitcoin and are instead gradually rotating capital elsewhere.

On-chain data supports this movement, with USDT flows recording their largest exchange outflow in roughly three months. If this trend holds, the rebound in the Altcoin Season Index could indicate that altcoin selling pressure is reaching exhaustion.

While several signals are lining up for a potential altcoin rally, market momentum remains the critical variable to watch.