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Where is the Market Going Tommorow? Its all about the Euro

November 29, 2010

The importance of common sense macroeconomic factors is something that all traders agree upon. What is less obvious is how to take this information and convert it into an actionable trading strategy. From my experience in system/algorithm design, starting with simple strategies that are long/short and always in the market is always the most effective solution. In this case what could be simpler than using the daily direction of the euro (symbol FXE – an exchange traded fund ) to predict the S&P500 (symbol SPY-an exchange traded fund). After all, the fear of Euro-zone problems and the magnitude of the consequences is ominously comparable to the real estate and financial markets in 2007. I mentioned this relationship earlier in the year as a factor worth watching since it was very successful at predicting the S&P500 early in the year. Clearly, the smart money is also watching this very carefully. In this case, using this simple strategy of buying the SPY on the close when the FXE is up today, and shorting the SPY on the close when the FXE is down today is highly profitable. Below shows the returns YTD in 2010 using this simple strategy. While this relationship has not always held true over the years, this is the first time that the Euro has been such a key logical driver of S&P500 returns. Intermarket factors are not like technical factors– they change all the time, and using a shorter window (60 days to 1-year) to track what is working best is often successful out of sample.

5 Comments leave one →
  1. November 30, 2010 7:01 pm

    Good work, as always David. Really enjoy your work. I, personally, would not have shared this one. Thanks again.

  2. December 1, 2010 9:43 am

    David, have you did any work in looking at how your edges fair after large pre-market jumps in both same and opposite direction? I.e assuming buying on the open. This is one area I am keenly tracking and will be running studies on soon.

    • david varadi permalink*
      December 3, 2010 6:30 pm

      hi curtis, thanks and so far I have not looked at what you are suggesting specifically in combination with this effect, though I have looked at it from a more general standpoint I don’t mind sharing this relationship because it won’t go away because I published it. the euro is just too big of a market and so is the S&P for that to happen.

  3. December 2, 2010 1:48 pm

    Nice work. Thanks for sharing your research.

  4. Samo permalink
    December 7, 2010 2:39 am

    Thanks for sharing this and other things on this blog.

    I have a very basic question: what are the fundamental reasons (what is the underlying econimic logic) that this relationship is/was working?

    Thanks in advance for your answer.

    Kind regards,

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