Corporate Event Notice CE12-160

OCX.NoDivRisk® Adjustments

The securities listed below will be trading ex-dividend on the Ex-Date noted. Corresponding OCX.NoDivRisk SSF will be adjusted by the following amounts.

Business Date

Name

Underlying Symbol

Underlying ID

Futures Symbol

Adjustment Amount

Ex-Date

2012-07-05

Enerplus Corporation

ERF

292766102

ERF1D

-0.0877

2012-07-06

2012-07-05

Focus Media Holding Ltd

FMCN

34415V109

FMCN1D

-0.1360

2012-07-06

The OCC will reduce the start of day prices (i.e. prior day’s settlement) by the amount of the dividend so as no variation pay/collect occurs.

Questions regarding this memo can be addressed to OneChicago at info@OneChicago.com or 312.424.8507. This and all other OneChicago corporate event circulars can be accessed from the OneChicago Web site at www.OneChicago.com

THE ABOVE IS AN UNOFFICIAL SUMMARY OF INFORMATION CURRENTLY AVAILABLE: THIS INFORMATION IS SUBJECT TO CHANGE. ONECHICAGO, LLC ACCEPTS NO RESPONSIBILITY FOR ITS ACCURACY OR COMPLETENESS.