Also, it was difficult to figure out how to create a new application... Put a box around the "Create New" button to make it more obvious that that is a button.
Overall, the concept has merit... You need to make clear that this is a PROGRAMMABLE stock tracking website, since that seems to be the innovation here. Might be something I would use, once it's more polished.
Note that you app somewhat limits users to "programmers who are also stock traders", which could be a smallish niche... The barrier to adoption of your tool are high as well- Steep learning curve. Also, many such folks may not trust you enough to store their trading strategies on your site.
...You're going to have to create a _fantastic_ implementation of your idea before a critical mass of people will spend the time to learn the system- Long way to go.
But I can see what your trying to do and I think there is potential in this direction.