Wells Fargo tilted the top-heavy FHA lending sector even more in the first quarter, increasing its market share to 15.9 percent of total FHA originations in the quarter. That share is up from just 9.2 percent at the end of 2009 and 8.3 percent from year-ago levels, when Bank of America was the top FHA lender. Wells was the largest mortgage lender in 2009 in the overall market, as well. Wells’ $11.48 billion...