The paper said talks of the move have been circulating among investors and hedge-fund consultants over the past few days.
Walthour left Aksia, a New York-based investment-consulting firm, in December, according to the paper.
Citadel could not be immediately reached for comment by Reuters outside regular U.S. business hours.
Kenneth Griffin, long considered one of the industry's best managers, delivered gains of 62 percent to investors in Citadel's flagship Kensington and Wellington funds in 2009, an investor told Reuters in December.
(Reporting by Ajay Kamalakaran in Bangalore; Editing by Anshuman Daga)

![Helen Mirren: Dying Boy, Oliver Burton, Gets His Last Wish Thanks To Actress Dressed As Queen Elizabeth [PHOTOS] Helen Mirren: Dying Boy, Oliver Burton, Gets His Last Wish Thanks To Actress Dressed As Queen Elizabeth [PHOTOS]](http://s1.ibtimes.com/sites/www.ibtimes.com/files/styles/v2_multimedia/public/2013/05/22/helen-mirren-visits-dying-boy_1.jpg)


![Oklahoma Tornado 2013: Photos And Footage Of The Twister's Devastation [PICTURES, VIDEO] Oklahoma Tornado 2013: Photos And Footage Of The Twister's Devastation [PICTURES, VIDEO]](http://s1.ibtimes.com/sites/www.ibtimes.com/files/styles/v2_multimedia/public/2013/05/20/oklahoma-tornado_1.png)

![Billboard Music Awards 2013: All The Fashion On The Billboards Red (Er, Blue) Carpet [PHOTOS] Billboard Music Awards 2013: All The Fashion On The Billboards Red (Er, Blue) Carpet [PHOTOS]](http://s1.ibtimes.com/sites/www.ibtimes.com/files/styles/v2_medium/public/2013/05/20/keha-givenchy.jpg)














![5 Incredible Future Campuses For The World's Tech Giants [PHOTOS] 5 Incredible Future Campuses For The World's Tech Giants [PHOTOS]](http://s1.ibtimes.com/sites/www.ibtimes.com/files/styles/v2_small/public/2013/05/22/amazons-biodome_0.jpg)






Like or Follow us for updates on the biggest stories!