INO.com. ESZ10 is currently trading at 1,210.25 -3.75 (-0.31%) tonight. Cisco ($CSCO) was down 12% in after hours trading after "forecasts fall short of estimates" [Bloomberg.com].
Also, an interesting trade occurred in the iShares MSCI Emerging Markets Index ETF ($EEM). It closed at $48.03 and traders bought a March 2011 46-41 put spread. According to Crimson Mind, investors bought 43,500 March 2011 $46 puts for $2.44 (avg) and sold 43,500 March 2011 $41 puts for $1.08. Andrew Wilkinson, senior market analyst at Interactive Brokers Group, mentioned this as well at Seeking Alpha (21,700 on each side). This insurance (or spec) would make the most money if EEM fell to $41 by March 2011 expiration. Also there were put trades in the Hong Kong ETF (EWH), read at Optionmonster. The S&P hasn't broken down yet, but hedging a potential downside catalyst makes sense.