Bitcoin Dominance Tests Key Support as Traders Watch for Altcoin Rotation

Bitcoin (BTC) dominance is at 58.55%, testing the floor of a range that has held since August 2025; a confirmed breakdown would target about 55.5%, a level many traders tie to the start of a broad altcoin rotation. According to BeInCrypto, BTC dominance broke its long-term ascending channel in August 2025, was rejected near 61% in May 2026, and is now back below the 0.236 Fibonacci level at 59.63%, with weekly downside targets at 55.66%, 52.44% and 49.23%. Sentiment remains cautious, with the Crypto Fear and Greed Index at 19 and the Altcoin Season Index neutral at 45.