Stocks of major US lenders sank at the open, following European banks lower as Credit Suisse Group AG plunged by a record. Regional banks are also dropping. First Republic Bank was downgraded to junk by S&P. Kailey Leinz reports. Follow Bloomberg for business news & analysis, up-to-the-minute market data, features, profiles and more: http://www.bloomberg.com Connect with us on... Twitter: https://twitter.com/business Facebook: https://www.facebook.com/bloombergbusiness/ Instagram: https://www.instagram.com/quicktake/?hl=en