The Motley Fool Discussion Boards

Previous Page

Investing/Strategies / Mechanical Investing


Subject:  Re: New screen - votes needed Date:  2/11/2013  2:21 AM
Author:  TopLineFirst Number:  241536 of 263495

Robbie pointed out that you can count the number of stocks passing steps without screener mode by checking the "count" option. Download the spreadsheet for daily details. I did this for Robbie's simplified screen and processed the information to examine how often the target depth of 10 was satisfied by year. The results are presented in the tables at the bottom.

The interpretation has to do with the way the GTR1 backtester considers all possible start dates. Since there are roughly 252 trading days per year, the maximum number of stocks that can pass in a year at the target depth 10 is roughly 252*10 or 2520. To illustrate, consider 1998:
1 time only 2 stocks passed,
1 time only 3 stocks passed,
3 times only 4 stocks passed,
3 times only 5 stocks passed
2 times only 6 stocks passed
4 times only 7 stocks passed, and
1 time only 9 stocks passed, and<