S&p 500 Unofficially Closes down 19.80 Points, or 0.95 Percent, at 2,064.59

Dow Jones Unofficially Closes down 215.45 Points, or 1.20 Percent, at 17,712.90

U.s. Stocks Extend Fall, Nasdaq down 1.00 Pct

Brazil's Central Bank Calls Auction for 20,000 Reverse Currency Swaps Later on Wednesday

Rpt-Nigerian Vice President says Question of Naira Devaluation Remains Ongoing Debate