Checkout leading quant strategies which are can be backtested and deployed for live trading.
Monthly asset rotation between Stocks (SPY), Gold (GLD) and Bonds (TLT)
Mean reversion based on smoothed RSI threshold crosses
Seasonality strategy: buy Nth-last trading day, exit after N calendar days
Mean reversion using Money Flow Index: buy when smoothed MFI is oversold, exit on momentum or time stop.
ATR band strategy: buy when price drops below band
Monthly cycle: buy after chosen date, sell next month open