Here are the posts on the Fidelity Select System.
Try as I might, I cannot replicate the results posted in Part 4. When I run the test now, I get a compound annual rate of ~11% with a final equity of ~$1.2 million. The new equity curve is very similar to the one in Part 4, but with a difference from previous tests in final equity of over $2 million, there is definitely something strange happening.
Keep in mind, as I have tried to replicate the results, I have consulted the code and settings for all of the previous tests. Every test I run saves the code and the settings for future reference. I am 100% positive that I am using the same code and the same settings.
The only thing that has changed is that I overwrote the original data from yahoo with the same data from yahoo. There was no particular reason for doing this except that I was just playing around with the AmiQuote data downloader. Theoretically, the data should not be different, just overwritten.
At this point, my primary suspicion is that a change was made to the yahoo data, but it is entirely possible that I have changed something and have not discovered it yet.
If anyone else out there has been playing around with this system and using yahoo data, I would be interested in hearing if you have noticed anything similar.