We highlight Credit Suisse Group AG (CS), Wells Fargo & Co. (WFC), Fannie Mae (FNM) and Freddie Mac (FRE).

Not Out of the Foreclosure Woods Yet

So you think we are out of the foreclosure woods? Don't bet on it. Take a look at the chart below, created by Credit Suisse . It shows the date of first reset or recast of various classes of adjustable-rate mortgages (ARMs). A reset refers to a change in the interest rate, a recast refers to a change in the payment.

For most "plain vanilla" ARM's they are the same thing, but for Option ARM's the payment can change without a change in the interest rate. Option ARM's (the yellow part of the bars) allow the borrower to pay less than the amount of interest on the loan early in the mortgage life, with the difference being added to the principal of the mortgage. Even in a flat housing price environment, this would cause the loan-to-value (LTV) ratio to rise over time. In a falling home price environment, with both the loan growing and the value falling, it happens much more quickly.

The vast majority of the homeowners with these "pick a payment" mortgages pay only the minimum payment. When it exceeds a set level, or at a set date in the future (whichever comes first), the mortgage holder has to start paying the fully amortizing payment of the now much larger mortgage. This can cause huge jumps in the monthly payment, with increases of over 50% not uncommon.

These are the ultimate in "exploding mortgages." The number of these recasts is relatively small right now -- at about $1 billion per month -- but that number is set to grow dramatically over the next few years, exceeding $8 billion per month in the fall of 2011. If the equity in your house is gone and your monthly mortgage payment suddenly jumps from $2000 per month to over $3000 per month, what do you think is going to happen? How about if one or both of the people in the household has been laid off?

This is going to be a huge problem, particularly for Wells Fargo (WFC).? The biggest writer of these abominations of housing finance vehicles was Golden West, which was bought by Wachovia, which was then absorbed into WFC. Unlike sub-prime mortgages, these were for the most part targeted at more upscale homeowners.