I always like to go back and analyze the previous year's data to see if there is something I can learn from what happened. I like to see if new information I've learned helps or hinders my trading. Most of the time, any new information causes me to perform poorly.
Last year was no exception. Although it was a pretty good year, I still didn't manage to outperform any of my screens. What that means is that all of my labor, sweat, knowledge, and effort created no advantage over a simple mechanical stock screen. I could have spent 15 minutes a week and created the same (or even better) results than I did with constant monitoring, reading, thinking and planning.
Don't get me wrong--I enjoyed every minute of all that hard work because I absolutely love what the market has to offer. I love reading about it, watching it, analyzing it and trading it. But I do think that I could spend a lot of the time that I spend on the market on other more productive things.
To give you an example, one of the things I've really studied this year is timing the market--going to cash when things suck and going crazy when things are going well. I put together several indicators that I think really capture the "underbelly" of the market and allow me to accurately predict the short-term direction of the market.
I went back and applied what I learned to my stock screens to see if I could utilize my timing models to capture the upswings and sit out the downswings. The results kind of shocked me. I expected to at least double my theoretical return. Instead, I cut it in half. For my style of trading and screening, market timing is counterproductive (at least over 2007 it was).
So, I'm back to the conclusion that I had at the end of 2006. If I stick to a mechanical plan in the good times and the bad, I have a very good chance of soundly beating the market.