As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of NRG Energy: Jefferies Financial Group Inc., Wolverine Trading LLC, Squarepoint Ops LLC, Nomura Holdings Inc., Millennium Management LLC, Jefferies Financial Group Inc., Group One Trading LLC, D. E. Shaw & Co. Inc., Cubist Systematic Strategies LLC, Capstone Investment Advisors LLC, Citadel Advisors LLC, Jane Street Group LLC, Tudor Investment Corp ET AL, Parallax Volatility Advisers L.P., Concourse Financial Group Securities Inc., Marshall Wace LLP, PEAK6 LLC, Walleye Trading LLC, Walleye Capital LLC, Capital Fund Management S.A., Bank of Montreal Can, JPMorgan Chase & Co., Twin Tree Management LP, Wolverine Asset Management LLC, Genus Capital Management Inc., Caas Capital Management LP, Portman Square Capital LLP, and JPMorgan Chase & Co.. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission.