All-in daily rotation. Default: VT (global stocks). If QQQ is very hot, hedge with VXX; if very cold, swing to TQQQ (3x QQQ). If the market is in a downtrend, use GLD only when tech is also weak; otherwise stay in VT.

Each day it checks a few simple signals: 1) If Nasdaq-100 (QQQ) looks extremely “hot” over ~2 weeks (RSI>79), switch to VXX (a fear/volatility play). 2) If QQQ looks extremely “cold” (RSI<32), buy TQQQ (a 3x bounce bet). 3) Otherwise, if the S&P 500 is below its 200‑day average, go defensive: hold GLD only if QQQ is also weak short‑term; else hold VT. 4) In all other cases, hold VT (global stocks).

Out-of-sample edge: higher risk-adjusted returns. Sharpe 2.61 vs 2.50, annualized return ~30.5% vs ~29.3%, Calmar ~9.64. Similar drawdowns; a simple rules-based rotation that tends to beat the S&P 500.