You can't unwind the biggest asset bubble in history overnight—or even in a year. By Whitney Tilson, Contributing Editor and John Heins, Contributing Editor November 1, 2009 Signs of recovery are appearing everywhere in the housing sector. Existing-home prices rose month-over-month in May for the first time since mid 2006, and sales of existing homes in July rose at the highest rate in ten years. Does that mean the housing market's horrific collapse, which has caused pain worldwide, is finally behind us? In a word: No.As much as we'd like to believe otherwise, we expect housing prices to resume their decline well into 2010. As a result, financial companies exposed to the housing sector will endure substantially higher-than-normal losses for several more years. The first wave of the housing crisis began when risky loans made to speculators and subprime borrowers started to go bad. The problems these loans caused are now mostly behind us, and the low end of the housing market is stabilizing. Among homes once selling for about $200,000, prices have fallen dramatically—in some cases 70% or more—and first-time homeowners are stepping in, resulting in rising sales and even bidding wars. High-end woesThe market for midprice and expensive homes, however, is frozen. Buyers are looking for bargains, but sellers are still focusing on the housing values of a few years back and refusing to sell at prices buyers are willing to pay. Look at California, the largest market in the U.S., with 10% of the nation's homes. A year ago, at the rate houses were selling, it would have taken nine to 11 months to sell all the houses on the state's market. Today, California's inventory of unsold homes priced at less than $300,000 is a mere two months, but the backlog among homes listed at $1 million and up is 18 months. Wealthy homeowners can continue to make mortgage payments longer than poor ones can, but the weak economy and falling home prices at the high end of the market are clearly starting to take their toll. While foreclosures of lower-priced homes are declining, they're rising rapidly among homes in the higher ranges. That the number of actual foreclosures is only near 2008 levels is due to the dramatic increase in government-imposed mortgage modifications, which are artificially propping up the market and not allowing prices to reflect actual demand. Says Mark Hanson, of the Field Check Group, a real estate advisory firm: "The current modification policies of 'pretend and extend' only kick the can down the road and ensure that the housing market remains a dead asset class for years to come." Advertisement The implications for investors? Despite our concerns, we are not predicting economic Armageddon, thanks mainly to massive government intervention. But we're not out of the woods yet. We experienced the largest asset bubble in history, and it will simply take time to unwind it. Warren Buffett put it best when he said, "You can't produce a baby in one month by getting nine women pregnant." Thus, we see tepid growth and high unemployment for a number of years. Of course, we hope we're wrong, but this is the big-picture analysis we're employing as we evaluate individual stocks. We've been using the market rally as an opportunity to trim our more-aggressive positions, such as Borders Group (BGP), Huntsman (HUN) and Resource America (REXI), all of which have risen dramatically from their distressed lows earlier this year. At the same time, we've added some large-capitalization, cash-rich companies, such as eBay (EBAY), Microsoft (MSFT), Pfizer (PFE) and Yahoo (YHOO), which we believe will hold up well in a weak economy. Our least-favorite sectors are those that will suffer directly if the housing market turns down later this year, as we expect. Among those are homebuilders, bond insurers and regional banks. Despite the stock market's "clear skies ahead" message lately, we see plenty of storm clouds on the horizon for those industries. Columnists Whitney Tilson and John Heins co-edit Value Investor Insight and SuperInvestor Insight. Funds co-managed by Tilson hold positions all stocks mentioned in this article.