Here is a listing of my mathematica notebooks. The most recent of any of these notebooks can all be obtained from my github Mathematica repository.
The Wolfram CDF player can also be used to view a number of these notebooks after download.
Plotting last couple weeks of IBM stock history.
For a given stock symbol, and some number of weeks, compute a least squares linear fit from the 'close, low and high' values for the days in that range. Plot the difference from that linear fit for the date range. Also plot the unscaled values of 'close, low, high' against the linear fit.
Experiment with plotting some hypothetical transactions against stock history with Tooltips for PV and MV
A monthly compounded interest calculator
Generate some monthly compounded interest tables