According to Cas Abbé, market liquidity typically flows from Bitcoin to Ethereum before fueling significant altcoin rallies. Citing recent market movements, Abbé notes that liquidity has now started entering Ethereum, which historically precedes a major upward trend in altcoins. Traders should monitor ETH price action and on-chain liquidity metrics to identify early altcoin opportunities, as the current shift suggests the next phase of the crypto bull cycle may be underway (source: Cas Abbé on Twitter, May 13, 2025).