Financial stocks sank Monday, as worries over the impact of the fast-spreading coronavirus out of China on economic growth sent Treasury yields to multi-month lows. The SPDR Financial Select Sector ETF /zigman2/quotes/209660484/composite XLF +1.92% slumped 1.8% toward a 7-week low. Among the more active components in premarket trading, shares of Bank of America Corp. /zigman2/quotes/200894270/composite BAC +1.59% slid 2.7%, Citigroup Inc. /zigman2/quotes/207741460/composite C +2.81% shed 2.5%, J.P. Morgan Chase & Co. /zigman2/quotes/205971034/composite JPM +2.53% dropped 2.2%, Wells Fargo & Co. /zigman2/quotes/203790192/composite WFC +0.59% gave up 1.9% and Berkshire Hathaway Inc. /zigman2/quotes/200060694/composite BRK.B +2.18% declined 1.6%. Meanwhile, futures for the Dow Jones Industrial Average /zigman2/quotes/210598065/realtime DJIA +1.78% were down 430 points, or 1.5%. The yield on the 10-year Treasury note /zigman2/quotes/211347051/realtime BX:TMUBMUSD10Y -0.72% fell 6.3 basis points to a 3 1/2-month low of 1.618%. Lower long-term interest rates could hurt bank profits, as the spread between what they could earn on longer-term liabilities, such as loans, which are funded by shorter-term assets.