management 2019s discussion and analysis balance sheet analysis and metrics as of december 2013 , total assets on our consolidated statements of financial condition were $ 911.51 billion , a decrease of $ 27.05 billion from december 2012 . this decrease was primarily due to a decrease in financial instruments owned , at fair value of $ 67.89 billion , primarily due to decreases in u.s . government and federal agency obligations , non-u.s