Here at the Fool, we preach long-term investing in the very best companies and brands. It doesn't matter if the business is a manufacturer, distributor, retailer, or even a megabank. 

The hard part for many investors is knowing where to start. How do you know if Bank of America (BAC -1.71%), JPMorgan Chase (JPM -0.06%), or Wells Fargo (WFC -0.58%) is the best bank for your portfolio? Throw in regional banks such as BB&T (TFC -2.24%) or a custodial bank such as Bank of New York Mellon (BK -1.04%), and the number of choices can be downright overwhelming. 

In the following video and instruction guide, Motley Fool contributor Jay Jenkins presents one tool he uses to seed ideas for his bank investments. To him, the search starts locally and is confirmed by market share.

Massive gains in banks
Have you missed out on the massive gains in bank stocks over the past few years? There's good news: It's not too late. Bargains of a lifetime are still available, but you need to know where to look. The Motley Fool's new report "Finding the Next Bank Stock Home Run" will show you how and where to find these deals. It's completely free -- click here to get started.

How to generate a report for your city

Step 1: Follow this link to the FDIC's Summary of Deposit's report page.

Step 2: Beside "Report," select "Metropolitian Statistical Area (MSA)."

Step 3: Select your local city or area.

Step 4: Click "Continue."

Step 5: Voila! The FDIC will present an easy-to-read table with market share data for the area you selected.