U.S. stocks fell Friday as investors grappled with headwinds facing Deutsche Bank (DB) - Get Report . At least ten hedge funds are scaling back business with the bank, according to news reports. Deutsche Bank faces a $14 billion fine from the U.S. Justice Department from activities stemming back to the financial crisis. Meanwhile, oil prices lost steam, with enthusiasm fading for this week's OPEC agreement to cut production. Reports suggest Iraq is skeptical of the production figures OPEC uses. More details about the deal are set to be announced at OPEC's November meeting. Costco (COST) - Get Report shares rose after reporting a 1.6% increase in quarterly profit to $779 million. Earnings of $1.77 a share beat estimates of $1.73. Same-store sales showed no growth in its most recent quarter, but rose 3% when stripping out currency headwinds. TheStreet's Ruben Ramirez reports from Wall Street.