Regime-switching between Nasdaq levers and defensive bets: when SPY is above its 200-day average, use a 50/50 Nasdaq bet (QQQ and 2x QLD). When SPY is below the 200-day average, buy QLD if SPY RSI(10) is under 30; otherwise split 50/50 between XLP (defensive) and QID (inverse Nasdaq). No rebalancing; backtested through 7/13/2006. Leverage implies higher upside and risk.

- The strategy uses SPY to judge the market regime. If SPY price is above its 200-day moving average, it is treated as a bullish regime. In this regime, the strategy allocates to Nasdaq assets: ProShares Ultra QQQ (QLD, 2x Nasdaq) and Invesco QQQ Trust (QQQ, Nasdaq-100) with equal weights (50% each). This levered Nasdaq stance aims to amplify Nasdaq upside when the market is positive. - If SPY price is not above the 200-day moving average (bearish regime), the approach switches. It first checks if SPY is oversold by looking at the 10-day RSI. If SPY RSI(10) < 30 (oversold), the strategy bets on a bounce by putting 100% of capital into QLD (levered Nasdaq bet again). - If SPY RSI(10) >= 30 (not oversold), the strategy shifts to a defensive/hedged posture: it allocates 50% to XLP (Consumer Staples, a defensive sector) and 50% to QID (Inverse Nasdaq, -2x). - There is no periodic rebalancing in this model (rebalance = none); once the regime-based allocation is chosen, those positions stay in place for the backtest period unless the regime decision path changes (although the provided structure uses a single decision at start). - Tickers involved and what they represent: SPY (broad market ETF), QQQ (Nasdaq-100 ETF), QLD (2x Nasdaq levered ETF), QID (Inverse Nasdaq, -2x), XLP (Consumer Staples sector ETF). The idea is to capture Nasdaq strength with leverage in uptrends, and to hedge or opportunistically dip-buy during downturns with defensive or inverse Nasdaq plays.

Out-of-sample annualized return 34.28% vs SPY 23.12%, with Calmar ~1.38 and Sharpe ~1.26, offering superior upside from Nasdaq-levered bets in uptrends and protective dip-buy/defense in downturns, for stronger long-term growth than the S&P 500.