Showing posts with label Holding period. Show all posts
Showing posts with label Holding period. Show all posts

Saturday, November 25, 2006

Are You Holding It Long Enough?

How many times have I read on one BLOG or another - "man - I sold that one too early" - for that matter how many times have I said that? At least once that I remember - - (actually more times than I care to remember).

Well let me tell you this about that - for every time you hear or read that statement there are probably 10 more times when someone says - "held it too long - lost all my gains."

I decided to test a premise or two regarding this idea of "holding too long/not long enough" and came up with some amazing results. The filtering software I use - stockfetcher.com - has the capability to do moderately sophisticated backtesting. One of the things it allows is for you to set-up a variety of exit criteria. I thought I'd take advantage of that capability.

I took a very simple filter that I am working on - one moving average crossing another that throws off a profit over time. (Actually it is an EMA crossing a simple moving average and it seems to have promise - if it proves out I'll publish it - I promise.) What I did was set up a simple exit criteria - a stop loss set at 10% coupled with three levels of profit for exit - 5%, 10% or 15%. In other words if I hit a profit at one the pre-selected levels I would close the trade. I kept my normal set-up regarding number of plays per day (1) and number of stocks in the portfolio (4) and number of days to hold maximum at 4.

Here are the results: 5% profit = $9746, 10% profit = $9479 and 15% profit = $4546

Amazing - by asking for a lower profit performance we actually achieved twice the amount of profits.

Ok a couple of things. First - the exact same set of stocks were selected and played in all three tests. Second - only closing values were used. In other words if any stock hit 15% intraday and then traded below that at the close - it was held another day and it might not have reached 15% again. Third all holdings regardless of their profit/loss status were sold on the fourth day of holding or on the last day of the test.

Bottom line of that - if a human were watching this they might have improved on the numbers a bit. But because the results at 5% are twice as good as 15% and the 10% result is nearly as good as the 5% I wouldn't expect great improvements - some maybe but not great ones and - by keeping the entire thing mechanical you can't second guess.

So it appears if you lower your profit target there is a possibility that you will increase your profitability. And that is always nice - isn't it?