Duke Energy 2011 Annual Report Download - page 53

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PART II
Stock Performance Graph
The performance graph below illustrates a five year comparison of cumulative total returns based on an initial investment of $100 in Duke
Energy Corporation common stock, as compared with the Standard & Poor’s (S&P) 500 Stock Index and the Philadelphia Utility Index for the
five-year period 2006 through 2011.
This performance chart assumes $100 invested on December 31, 2006, in Duke Energy common stock, in the S&P 500 Stock Index and
in the Philadelphia Utility Index and that all dividends are reinvested.
$0
$50
$100
$150
$200
2006 2007 2008 2009 2010 2011
Duke Energy Corporation S&P 500 Index Philadelphia Utility Index
NYSE CEO Certification
Duke Energy has filed the certification of its Chief Executive Officer and Chief Financial Officer pursuant to Section 302 of the Sarbanes-
Oxley Act of 2002 as exhibits to this Annual Report on Form 10-K for the year ended December 31, 2011. In May 2011, Duke Energy’s Chief
Executive Officer, as required by Section 303A.12(a) of the NYSE Listed Company Manual, certified to the NYSE that he was not aware of any
violation by Duke Energy of the NYSE’s corporate governance listing standards.
33