Below tool (Search/Navigation box) will help you gain insights regarding the operating expenses (OPEX) of various companies. Currently, you will be able to find reports for about 6000+ USA listed companies.
Every report will contain 4 sections. First two sections will discuss the yearly and monthly values. Towards the end you will find best and worst quarters as far as operating expenses are concerned.
How To Use The Above Search/Navigation Box
Just begin typing the company symbol or name. For example, let us say you want to analyze the operating expenses history of APPLE INC. In that case, you will be typing APPLE INC. As you type, you will see options that match the typed characters.