Bitcoin reached an intraday high of $79,500 on Aug. 21, putting it within striking distance of $80,000 as it entered the weekend. The move capped the cryptocurrency’s biggest weekly rally in two years, driven by the rare combination of a surprise Treasury intervention, roughly $1.6 billion in spot ETF inflows and billions of dollars in forced short liquidations. The ETF buying support was set to disappear over the weekend, according to the report.