BTC/ETH core rebalancing rules from 2026 to 2028

A speculative cryptocurrency core consisting of Bitcoin and Ethereum, each a spot pair, plus a US spot ETF sleeve, plus 10% Solana as a satellite. Cycle argument: The 52-week low of $57,748 (August 2026) is the cycle low after the high of $126,198; ETF flows in the third quarter shifted from -$5 billion to +$6.3 billion (Benzinga, 2026-10-01). Target weighting BTC 45% / IBIT 15% / ETH 20% / ETHA 10% / SOL 10%; once a component deviates from the target by more than 10 percentage points, it will be rebalanced quarterly. Failure: BTC weekly close below $57,700 = cycle low theory wrong, then core reduction to 50%. This is not a savings plan, it is not an altcoin bet, and it is not a leveraged product; historically, 50-70% drawdowns are normal in this space.