Early on in this project I made a strategic decision to get the data for LOSE YOUR BROKER NOT YOUR MONEY from free websites like MSN and Yahoo! I did this to demonstrate that you don't need to pay high brokerage fees to get this information. The free sites provide everything required to be a successful investor -- though it might not be 100% accurate.
Luckily perfection isn't required to be a successful investor. What you need is superior construction and 15-51 methodology delivers that. Guaranteed. So when I made my data decision I knew that any data flaw slipping past my due diligence efforts wouldn't change the story, nor would it impune the superiority of 15-51 methodology. For that reason I maintained my approach not to pay for stock price data.
That was then and this is now.
Now I have a website and a technology team to verify and compile stock data that I purchase from a supplier. Armed with this new arsenal of information and capability, I've learned that the performance of the 15-51 Indicator (15-51i) was better than I originally calculated. I previously reported that the
15-51i's return on investment was 273% for the 13 year period from 1995 through 2008 -- but it actually advanced 329% during this time. It gained 802% from year ended 1995 to current. Here's the picture.
15-51 methodology -- It is that good.