Bitcoin's market dominance has surpassed 60% for the first time in 2026, reaching 60.10% on April 24 before slightly retracing to 59.8%. This shift indicates a defensive capital rotation towards Bitcoin as altcoin participation weakens. Ethereum maintains a stable position between 10.7% and 12%, but lacks the momentum to challenge Bitcoin's lead. Stablecoin supply remains steady, suggesting capital is rotating within the market rather than exiting. Bitcoin's valuation stands at approximately $1.55 trillion within a $2.6 trillion market, highlighting its relative strength driven by selective demand. Institutional interest is evident with over $2 billion in ETF inflows in April, reinforcing Bitcoin's market control. Meanwhile, altcoins struggle to attract sustained inflows, with the Altcoin Season Index dropping to around 41, indicating weak momentum and limited market rotation. The current market structure reflects a Bitcoin-led phase, with altcoins under pressure due to weak follow-through and limited liquidity conditions. This suggests an incomplete cycle progression, where Bitcoin's dominance persists while altcoin strength remains delayed.