Dow Jones Unofficially Closes down 185.62 Points, or 1.05 Percent, at 17,534.88

U.s. Vice President Biden in Call With Ukraine's Poroshenko says united States Is prepared to Sign Third $1 Bln Loan Guarantee Agreement - White House

Brent Crude Futures Settle at $47.83/bbl, down 25 Cents, 0.52 Pct

Cftc-Speculators Increase CBOT US 5-Year Treasury Futures Net Short Position by 57,254 Contracts to 246,113 in Week on may 10

Cftc-Speculators Trim CBOT US 10-Year Treasury Futures Net Short Position by 2,760 Contracts to 79,260 in Week on may 10