DATE: 07/02/2012

RE: 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.

The OCC will adjust the start of day prices (ie. prior day’s settlement) by the amount of the dividend.

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.

Progress Energy, Inc. (“PGN/PGN1C/PGN1D”)
Merger complete with
Duke Energy Corporation (“DUK”)

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Duke Energy Corp. (“DUK/DUK1C/DUK1D”)
1-for-3 Reverse Stock Split
Ex-Distribution Date: 7/3/12

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Contract Delisting

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Human Genome Sciences, Inc. (“HGSI/HGSI1C/HGSI1D”)
Tender Offer by       **FURTHER EXTENDED**
GlaxoSmithKlein plc
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OneChicago Announces Trading Volumes for June 2012, Strongest Month in Five Years

-       Security futures volume topped 1 million for the third quarter in a row

 -       June volume is highest monthly total since February 2007

 Chicago – July 2, 2012 – OneChicago, an equity finance exchange, today announced that June 2012 volume of 868,512, was up 334% percent from May 2012, and up 121% percent year-over-year compared with June 2011.

June 2012 highlights include:

•   848,441 Exchange Futures for Physicals (EFPs) and blocks were traded. June 2012 EFPs and blocks activity represented $4.0 billion in notional value.
•  43% of June 2012 month-end open interest was in OCX.NoDivRisk^® products. The OCX.NoDivRisk^® product suite is an innovative equity finance tool, which removes dividend risk from the security futures.
•  161,476 of June 2012 futures valued at more than $804 million were taken to delivery, emphasizing the use of single stock futures as an equity finance product.
•  Open interest stood at 437,025 contracts on the equity finance exchange at the end of June 2012.

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ABOUT ONECHICAGO

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OneChicago (OCX) is the only US equity finance exchange for trading security futures and the related EFP. Regulated by the SEC and CFTC, OCX lists approximately 2,800 products, including ADRs, ETFs and OCX.NoDivRisk^® contracts. Contracts are cleared through the centralized counterparty, “AA+”-rated OCC. Security futures, a Delta One product, are utilized for synthetic equity strategies including equity swaps, equity repos and stock loan/borrow transactions. The OneChicago OCX.NoDivRisk^®, Exchange Futures for Physical transaction is economically equivalent to a Securities Lending Transaction.

OCX.NoDivRisk^® contracts are security futures with dividends removed from the pricing as the future’s price is adjusted down by the value of the dividend on Ex-date.

For more information, please visit our Website at: http://www.OneChicago.com or contact us at 312-424-8507.

P.F. Chang’s China Bistro, Inc. (“PFCB/PFCB1C/PFCB1D”)
Cash Merger COMPLETE with
WOK Parent LLC

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Re:  Information Update: Booking of EFP cash leg transactions to reflect fees.
Effective Date:  July 18, 2012

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Duke Energy Corp. (“DUK/DUK1C/DUK1D”)
ANTICIPTED 1-for-3 Reverse Stock Split   **UPDATE**
Ex-Distribution Date: 7/3/12???

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Progress Energy, Inc. (“PGN/PGN1C/PGN1D”)
Proposed merger with             ***UPDATE***
Duke Energy Corporation (“DUK”)

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