Invesco QQQ Trust - proxy for Nasdaq 100 index (updates every 15 min)
Why: Nasdaq 100 proxy. Tech-heavy index most correlated with Bitcoin during risk-on periods.
Category: macro. Macro economic indicators track monetary policy, liquidity conditions, and traditional market positioning. Changes in these metrics often lead Bitcoin price moves by days or weeks.
Source: Finnhub. Updated: Every 15 min (market hours).