The stock market saw losses today as ugly earnings reports and continued uncertainty over the banking sector soured investor confidence, the Wall Street Journal reports. Bank of America, off 10.6%, was that sector’s big casualty; a grim forecast pushed Costco down 6.8%. The Dow fell 121.70 to 7,956.66. The Nasdaq lost 1.25, to 1,515.05, and the S&P 500 dropped 6.28 to close at 832.23. (More Dow Jones stories.)