To amend my previous message: The way I see it: 1) If I use the Adjusted Close, I will also need to convert the weekly high and low data (the two other data points required in this trading system) in order to compare apples and apples 2) If I use the "actual" close, then I *will* need to adjust for splits. Either way, it sounds more complicated than it should be. All suggestions will be appreciated.

Thanks for the welcome! >>Are you wanting to know how Yahoo adjusts their closing price? I was assuming that I am not the first person to have to deal with this issue, so I hoped someone here would have some wisdom in this regard. >>Are you importing this data into MS for use? No. As I mentioned, I am looking at the data in Excel. >>Concerning your attached document, how does it relate to the Yahoo data question? I attached a copy of the system I wish to test simply as a FYI for anyone who's interested. >>I'm missing the point... and the permission and copyright notice for the TASC article that you are referencing. Now I'm the one who's confused ... I don't know what you're referring to here. I don't know what TASC or what article you say I am referencing. :?: Please let me know if my inquiry is inappropriate to this forum. I found the forum by searching google for "mechanical trading system forum".