“Despite the decline in our mortgage portfolio this quarter, we had our most active quarter for new business in 12 months,” Goodall said. The weighted average interest rate on the mortgage portfolio fell to 8.69% at June 30 from 8.86% at March 31. At quarter-end, 80.9% of Atrium’s mortgage portfolio carried floating interest rates, with most loans subject to interest-rate floors. Because the overall portfolio was smaller, the allowance represented 3.5% of the mortgage portfolio, up from 3.32% at Dec. 31. The company generates its revenue from mortgage interest and fees.