Residential mortgage production remained fairly strong in the second quarter thanks to an increase in retail-channel originations, which reached an all-time high of 64.6 percent in market share, according to a new analysis and ranking by Inside Mortgage Finance. The surge in retail production appears largely tied to ongoing strength in refinance activity. But lenders that are turning their attention to the purchase-mortgage market should consider that correspondents (34.8 percent) and brokers (22.0 percent) had higher concentrations of purchase loans than retail producers (19.3 percent) during the second quarter, based on Fannie/Freddie activity. Wells Fargo, as usual, continued...[Includes five data charts]