Fair Isaac is trading 10.53% lower at $729.47 after announcing a flat $10 price for participating lenders using Classic FICO and FICO Score 10T on every application. - Investors and analysts appear concerned this may limit future pricing upside as VantageScore competes for mortgage business. - Wells Fargo downgraded shares to Equal Weight from Overweight and cut its price target to $735 from $800; other firms also reduced targets. - Broader market indexes were higher; the decline is company-specific.