By CHRISTINA REXRODENEW YORK (AP) â¿¿ Wells Fargo, the country's biggest mortgage lender, reported record earnings for the fourth quarter on Friday, beating analysts' expectations for both profit and revenue. The bank made more loans, gained deposits and enjoyed above-average returns from the investments made by its private equity business. In a call with analysts, bank officials also sounded a positive note on their crucial mortgage unit. The housing market, said CEO John Stumpf, began "a steady rebound" in 2012. "There is no doubt," he added, "that a corner was turned." But investors found the results underwhelming and sent Wells Fargo's stock lower. Although the bank is still funding more mortgages than at any time in 2011, investors were disappointed that the numbers had slipped compared to the previous quarter. Wells Fargo's stock was down 50 cents at $34.90 in midday trading. As the first major bank to report earnings, San Francisco-based Wells Fargo sets the tone for the rest of the industry. And as the biggest mortgage lender by far â¿¿ it makes about 30 percent of U.S. mortgage loans, according to the trade publication Inside Mortgage Finance â¿¿ it's a bellwether for the overall housing market. Wells Fargo said it funded $125 billion in mortgages in the fourth quarter, up from $120 billion in the same period a year ago. However, that was down from the record $139 billion it did in the third quarter. Mortgage applications were down over both the year and the quarter. "The absolute levels of each of these data points remains relatively healthy," Stifel Nicolaus analyst Christopher Mutascio wrote in a note to clients, "but they are showing indications that the refinance boom is losing steam." Seventy-two percent of the fourth-quarter mortgage applications came from customers who wanted to refinance their current mortgages, rather than buy new homes. Refinancing requests have made up at least 70 percent of the bank's mortgage applications in five of the last six quarters.