According to @caprioleio, a rules-based strategy that only buys BTC when Bitcoin ETF net purchases exceed the network’s daily supply achieved a 127% cumulative return with lower risk in backtests, source: X post by @caprioleio on 2025-08-19 and Capriole live chart capriole.com/charts/?chart=…. The signal times entries by comparing ETF net flow to estimated daily issuance, offering a data-driven filter for BTC exposure, source: @caprioleio and Capriole live chart capriole.com/charts/?chart=…. Traders can monitor the live chart to align positions with periods of ETF demand dominance over supply, which the source highlights as historically favorable in the backtest, source: @caprioleio and Capriole live chart capriole.com/charts/?chart=….