iShares Russell 2000 ETF - small cap proxy (updates every 15 min)
Why: Russell 2000 small cap proxy. Small cap outperformance signals broad risk appetite.
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).