Why bitcoin’s ‘500-day rule’ faces its biggest test yet

AI Summary The so-called ‘500-day rule’ says buying BTC roughly 500 days before a bitcoin halving and selling it about 500 days after would have produced profits in prior cycles. fulltext: 167 chars | fulltext source: rss-fallback | summary method: extractive Original: https://www.coindesk.com/markets/2026/08/05/why-bitcoin-s-500-day-rule-faces-its-biggest-test-yet Source: CoinDesk