A 90% cash + 10% high‑octane sleeve. It buys volatility when markets look too hot, buys 3× tech/stock funds when they look washed‑out, and otherwise toggles between 3× long, 3× short, or cash using simple trend and risk checks.

90% sits in T‑Bills (BIL). The other 10% swings aggressively: - RSI (a 0–100 “hot/cold” gauge): if big indexes/sectors look red‑hot (~80+), buy VXX (benefits when markets wobble). If washed‑out (~30), buy 3× bull funds (SOXL/TECL/UPRO). - Otherwise, switch among 3× long Nasdaq (TQQQ), 3× short (SQQQ), or cash using trend checks (200‑day line), recent drops (−12% in 60 days), and bond vs short‑S&P strength. Focus is tech/Nasdaq/semis.

Out-of-sample Sharpe 2.16 vs SPY 1.12; max drawdown 4.8% vs 18.8%; Calmar 3.32; annualized return 15.9% vs SPY 20.1%. Safer, risk-controlled exposure: 90% cash core + 10% tactical sleeve.