For Bank of America (NYSE:BAC) and Wells Fargo (NYSE:WFC), or even the government-sponsored entities such as Freddie Mac (NASDAQOTH:FMCC), mortgage lending is big business. 

It's true across the industry, for institutions large or small. And that's why the current supply and demand outlook for good-quality mortgage loans is scary. 

In the following video, Fool contributor Jay Jenkins walks us through a supply-and-demand chart he created from recently released data from the Federal Reserve. As he demonstrates, while supply may be stable, the sharp rise in interest rates over the past several months has done some serious damage to the demand side.

Fool contributor Jay Jenkins has no position in any stocks mentioned. The Motley Fool recommends and owns shares of Bank of America and Wells Fargo. Try any of our Foolish newsletter services free for 30 days. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.