Calls Days until expiration: 10
Symbol & Strike Last Chng %Chng High Low Bid Ask Volume Open Int
CHS Feb 20 2010 2.50 10.10 -0.36 -3.44 10.10 10.10 11.00 11.60 1 1
CHS Feb 20 2010 5.00 9.30 2.05 28.28 9.30 9.30 8.50 9.10 5 81
CHS Feb 20 2010 7.50 5.70 -0.80 -12.31 5.70 5.70 6.00 6.60 1 94
CHS Feb 20 2010 10.00 3.72 -0.28 -7.00 3.72 3.70 3.70 4.00 7 1,404
CHS Feb 20 2010 12.50 1.45 0.39 36.79 1.45 1.45 1.40 1.50 2 3,504
CHS Feb 20 2010 15.00 0.10 0.04 66.67 0.15 0.05 0.05 0.15 550 11,404
CHS Feb 20 2010 17.50 0.05 — — 0.05 0.05 0.05 0.05 4 1,626
CHS Feb 20 2010 20.00 0.05 — — 0.05 0.05 0.05 0.05 15 253
Puts Bold and highlighted options are "At the Money"
Symbol & Strike Last Chng %Chng High Low Bid Ask Volume Open Int
CHS Feb 20 2010 2.50 — — — — — — 0.05 — —
CHS Feb 20 2010 5.00 0.05 -0.15 -75.00 0.05 0.05 0.05 0.05 1 141
CHS Feb 20 2010 7.50 0.05 — — 0.05 0.05 0.05 0.05 10 329
CHS Feb 20 2010 10.00 0.05 -0.05 -50.00 0.05 0.05 0.05 0.05 10 2,478
CHS Feb 20 2010 12.50 0.15 -0.05 -25.00 0.15 0.15 0.05 0.15 1 2,630
CHS Feb 20 2010 15.00 1.70 -0.05 -2.86 1.70 1.70 1.15 1.30 2 481
CHS Feb 20 2010 17.50 3.78 -0.92 -19.57 3.78 3.78 3.40 3.90 2 117
CHS Feb 20 2010 20.00 6.20 — — 6.20 6.20 5.90 6.50 15 15
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