Approximating Duration, Modified Duration, and Convexity with Option Free Bonds

The use of Excel’s PRICE function can eliminate much of the math required to understand how modified duration and convexity can be used to predict the price change in option-free bonds. The spreadsheet for this post is called “Option Free” and like all of my spreadsheets, it can be downloaded for free. The sheet is […]

30/360 Present and Future Values with Dates

In my very first post back in August of last year titled “No XNFV Excel Function?” I showed formulas for calculating present value and future values when cash flows with dates are given. These formula were calculated based upon actual days between dates and a 365 day base year. I lamented that Excel has a function that calculates present values with dates […]