Retail investors flocked to the single-family rental market during the pandemic. Now, even people who can’t afford a down payment are getting an invitation. Roofstock, an online marketplace for single-family rental properties, will start a fractionalization service this year after testing it in 2019, aiming to capture a slice of the surge in retail demand, Roofstock founder and CEO Gary Beasley said. Investors will be able to wager as little as $5,000. “The idea is