All-in, daily. If SPY is up or down big, buy the single best performer among mega-cap tech, SPY, or SPXL (3x S&P 500). If SPY is only slightly down, hold BIL (T-bills). Very concentrated, tech-heavy, high turnover and risk.

Each day it checks how the S&P 500 (SPY) moved. If SPY was up, it puts 100% into whichever of SPY, SPXL (3x S&P 500), AAPL, MSFT, GOOGL, AMZN, TSLA, NVDA had the best 1‑day gain. If SPY was slightly down (~0% to -1%), it parks in BIL (T-bills). If SPY fell more than ~1%, it again picks the single best name from that same list. Rebalanced daily.

Out-of-sample, this strategy shows 46.79% annualized return vs SPY's 21.85%, Sharpe 1.285 vs 1.026, and Calmar 1.847—delivering superior risk-adjusted growth for investors who can tolerate higher drawdowns (≈25.34% vs 16.62%).