Time Frame: Short-Term | Update Schedule: Daily | Source: SentimenTrader
Construction:
The Short-Term Combined Model is an ensemble models consisting of fourteen short-term sentiment indicators. The indicators used to create this ensemble model are:
- STEM.MR Model
- Short-term Optimism Index (Optix)
- SPY Optix
- OEX Put/Call Ratio
- ISE Call/Put Ratio
- ISE Equity Call/Put Ratio
- S&P 500 Price Oscillator
- NYSE TICK
- Rydex Beta Chase Index
- Rydex Bull/Bear RSI Spread
- SPY Fund Flow
- SPY Breadth (% > 10 Day Avg)
- Short-Term Risk Levels
- ISE Index Call/Put Ratio
As with most of our indicators, signals work best when going counter to the trend. For example, buying when the model drops below -10 when stocks are in a general uptrend is more likely to work out than when stocks are in a downtrend (say, below the 200-day moving average).
Also, failures contain good information. If stocks cannot rally after the model drops below -10 or, even more meaningfully, below -12, then there is heavy supply and stocks will likely continue their downtrend in the weeks ahead.
Model’s general rules
- 1.) Consider going long the S&P 500 when the Short Term Combined model reading is below -10.
- 2.) When the Short Term Combined model reading is above 13.5, SELL.
You can do 1 of 5 things when you SELL:
- Model: Shift into 100% cash
- Model (Multi-Asset Aggregate Bonds): Buy and hold a Aggregate Bond ETF (AGG)
- Model (Multi-Asset Corporate Bonds): Buy and hold a US Corporate Bond ETF (LQD)
- Model (Multi-Asset Treasury Bonds): Buy and hold a US Treasury Bond ETF (TLT)
- Model (Gold): Buy and hold a Gold ETF (GLD)
Performance
- Last updated April 2026
- Backtest timeframe: 2006-07-01 to 2026-04-30. NOTE: These dates were chosen to provide the same coverage across all signals and ETF's used in those signals and are dependant on ETF start dates.
- For all backtests shown, we used active and accessible ETF's (e.g., SPY, QQQ, TLT, LQD, etc). The prices of these ETF's are split and dividend adjusted.
- Shorting is performed by buying inverse ETFs. For these backtests, we used SH to short the S&P500 and PSQ to short the NASDAQ. Using leveraged ETFs like SSO (2x) and UPRO (3x) may increase your returns and drawdowns. NOTE: For the REIT Trading Model, no shorting is done as their isn't an ETF with enough history and activity to cover the timeframe.
- Historical returns shown below include transaction fees of $1.5 per order (e.g., $3 per round-trip) but does not include slippage.
Model's average annual returns
- Model: 10.47%
- Model (long/short) - SH: 18.04%
- Model (long/short) - PSQ: 9.12%
- Model (Multi-Asset Aggregate Bonds) - AGG: 11.33%
- Model (Multi-Asset Corporate Bonds) - LQD: 12.59%
- Model (Multi-Asset Treasury Bonds) - TLT: 13.04%
- Model (Gold) - GLD: 17.89%