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Course: Case Studies - Short Iron Condor Strategies
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Case Studies - Short Iron Condor Strategies

Text lesson

My Correlation Matrices: ETF Correlation

To better understand the importance of diversification and the non-correlation between various ETFs and the SPX, let’s delve into the correlation matrices for a range of ETFs and their correlation to the SPX. Here’s a detailed breakdown of the correlations:

ETF Correlation to SPX:

  • SPX: 1 (self-correlated)
  • DIA: 0.95
  • QQQ: 0.916
  • IWM: 0.878
  • XLF: 0.851
  • XHB: 0.845
  • IYR: 0.835
  • SMH: 0.813
  • EEM: 0.744
  • EWJ: 0.734
  • XLU: 0.705
  • EWW: 0.701
  • IBB: 0.651
  • XBI: 0.589
  • EWZ: 0.587
  • XLE: 0.567
  • OIH: 0.525
  • FXE: 0.47
  • FXI: 0.427
  • SLV: 0.375
  • GDX: 0.374
  • RSX: 0.348
  • GLD: 0.283
  • USO: 0.279
  • FXY: 0.162
  • UNG: 0.135
  • VXX: -0.734
  • UVXY: -0.768

Key Observations:

  1. High Correlation ETFs:

    • DIA (0.95), QQQ (0.916), IWM (0.878): These ETFs are highly correlated with the SPX, meaning their price movements are closely tied to those of the SPX. Investing in these alone does not provide significant diversification.
    • XLF (0.851), XHB (0.845), IYR (0.835): These sector-specific ETFs also show high correlation with the SPX, indicating limited diversification benefits.
  2. Moderate Correlation ETFs:

    • SMH (0.813), EEM (0.744), EWJ (0.734): These ETFs have moderate correlation with the SPX. They provide some level of diversification but still move in similar trends as the SPX.
    • XLU (0.705), EWW (0.701), IBB (0.651): These offer more diversification potential compared to the highly correlated ETFs.
  3. Low Correlation ETFs:

    • XBI (0.589), EWZ (0.587), XLE (0.567): These have lower correlation with the SPX, offering better diversification.
    • OIH (0.525), FXE (0.47), FXI (0.427): These provide significant diversification benefits as their movements are less tied to the SPX.
  4. Very Low Correlation ETFs:

    • SLV (0.375), GDX (0.374), RSX (0.348): These are even less correlated with the SPX, making them good choices for diversifying a portfolio.
    • GLD (0.283), USO (0.279), FXY (0.162), UNG (0.135): These ETFs have very low correlation with the SPX, providing excellent diversification benefits.
  5. Negative Correlation ETFs:

    • VXX (-0.734), UVXY (-0.768): These ETFs have a negative correlation with the SPX, meaning they often move in the opposite direction. Including negatively correlated assets can hedge against market downturns and reduce overall portfolio risk.

Practical Application:

Understanding these correlations helps you construct a more resilient portfolio. For instance, if the SPX drops, ETFs like VXX and UVXY might increase in value, balancing out losses. Similarly, including ETFs like GLD, UNG, and FXI, which have low or negative correlations with the SPX, can help protect against market volatility and downturns.

When opening iron condor positions, it’s beneficial to diversify across these low or negatively correlated ETFs. This strategy minimizes risk and maximizes the potential for stable returns. For example, opening an iron condor on UNG when the SPX is volatile can provide stability to your overall portfolio.

By carefully selecting a mix of highly correlated, moderately correlated, and low or negatively correlated ETFs, you create a diversified portfolio that is better equipped to handle market fluctuations. This approach not only reduces risk but also enhances the potential for consistent returns, making your trading strategy more robust and resilient.

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