Weighted Average Cost

The average cost you have bought an asset at.

REMARKS

Weighted Average Cost of Capital

All capital sources (stock, preferred stock, bonds and any other long-term debt)

This is calculated by multiplying the cost of each capital component by its proportional weight and then summing.

An average that takes into account the proportional relevance of each component, rather than treating each component equally. (This can be calculated in Excel using SUMPRODUCT)

Companies create value for investors by earning a return on the invested capital that is above the cost of that capital

WACC is expressed as a percentage (similar to interest)