13G Filing: Citadel Investment Group and Peabody Energy Corp (BTU)

CUSIP No. 704549104

13G

Page 6 of 10 Pages

Item 1(a)

Name of Issuer

Peabody Energy Corporation

Item 1(b)

Address of Issuer’s Principal Executive Offices

701 Market Street, St. Louis, Missouri 63101-1826

Item 2(a)

Name of Person Filing

This Schedule 13G is being jointly
filed by Citadel Advisors LLC (“Citadel Advisors”), Citadel Advisors Holdings II LP (“CAH2”), Citadel GP
LLC (“CGP”) and Mr. Kenneth Griffin (collectively with Citadel Advisors, CAH2 and CGP, the “Reporting Persons”)
with respect to shares of common stock (and options to purchase common stock) of the above-named issuer owned by Citadel Global
Equities Master Fund Ltd., a Cayman Islands limited company (“CG”), Surveyor Capital Ltd., a Cayman Islands limited
company (“SC”), and Citadel Securities LLC, a Delaware limited liability company (“Citadel Securities”).

Citadel Advisors is the portfolio
manager for CG and SC. CAH2 is the managing member of Citadel Advisors. CALC III LP, a Delaware limited partnership (“CALC3”),
is the non-member manager of Citadel Securities. CGP is the general partner of CALC3 and CAH2. Mr. Griffin is the President and
Chief Executive Officer of, and owns a controlling interest in, CGP.

The filing of this statement shall
not be construed as an admission that any of the Reporting Persons is the beneficial owner of any securities covered by the statement
other than the securities actually owned by such person (if any).

Item 2(b)

Address of Principal Business Office

The address of the principal business
office of each of the Reporting Persons is c/o Citadel LLC, 131 S. Dearborn Street, 32nd Floor, Chicago, Illinois 60603.

Item 2(c)

Citizenship

Each of Citadel Advisors and CGP
is organized as a limited liability company under the laws of the State of Delaware. CAH2 is organized as a limited partnership
under the laws of the State of Delaware. Mr. Griffin is a U.S. citizen.

Item 2(d)

Title of Class of Securities

Common stock, $0.01 par value

Item 2(e)

CUSIP Number

704549104