By comparing two key metrics - Bitcoin ETF money flows (spot buying) and CME futures positions over 30 days, we can see an interesting pattern. When these numbers move similarly, it suggests institutional traders are using a specific strategy:

Buy Bitcoin through ETFs (long spot) 🟠
Sell Bitcoin futures on CME (short futures) 🔵
Profit from the price difference between spot and futures

This matching pattern indicates large players are actively using this "cash-and-carry" strategy to earn relatively safe yields, rather than just making directional bets on Bitcoin's price.