Half the portfolio stays in cash. The other half follows a simple daily trend check on NVIDIA: if its 10‑day average price is above its 20‑day average, own NVDA; otherwise own XLY, a consumer‑discretionary ETF (Amazon, Tesla, retailers).

Every day, keep 50% in cash. For the other 50%: compare NVIDIA’s 10‑day average price to its 20‑day average (averages of recent days). - If the 10‑day is higher (uptrend), buy NVIDIA (NVDA). - Otherwise, buy XLY, a consumer‑discretionary fund (Amazon, Tesla, retailers). Rebalance daily.

AI-driven momentum with a 50% cash sleeve and NVDA/XLY rotation. Out-of-sample: 17.32% annualized return vs SPY 18.73%; Calmar ~0.50, Sharpe ~0.62. A transparent, rules-based growth strategy with explicit risk controls.