“Last year, the amount of institutional investors activity exploded. What you’re seeing now is the natural digestion of that exponential growth. That means maybe a slowdown in how many home they acquire, it may mean letting go employees in areas where it doesn’t make sense.”

These investors are moving their focus from acquisition to profitability, hoping to show Wall Street that the business model is not only feasible but highly profitable. The American Home now boasts 2,500 homes in Atlanta; Nashville, Tenn.; Orlando and Tampa, Fla.; and Charlotte, N.C.

Edelheit said rental demand is tremendous, and management is working well, but the model is still too green for the larger investment community. “You look at the stock prices of the companies that are public, and it’s pretty clear that Wall Street remains unconvinced in the single family rental model, and I think it’s natural for these firms to start right sizing and make sure that they are profitable.”

That could mean consolidation, with some of the larger firms that have stronger management structures buying up smaller players. Large-scale investors are still a relatively small segment of the 14 million single family rental market, but it appears they are here to stay, despite the recent volatility. Smaller investors, however, may be moving on, having exhausted their cash and their credit opportunities.

(Read more: Home prices across the US defy gravity)

Last spring, Redfin was running seminars for small “armchair” investors on how to buy and manage single family rentals. The classrooms were packed.

“There was a surge because people read the papers—in March, April, there was a bull market in housing. Suddenly at every cocktail party somebody wanted to make a killing in real estate,” Kelman said. “Some wanted to ride the wave, but some just caught it late.”

—By CNBC’s Diana Olick. Follow her on Twitter @Diana_Olick.

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Article source: http://www.cnbc.com/id/100988740