Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  HOHN CHRISTOPHER
 2. Date of Event Requiring Statement (Month/Day/Year)
09/22/2008		 3. Issuer Name and Ticker or Trading Symbol
CSX CORP [CSX]
(Last)
(First)
(Middle)
C/O THE CHILDREN'S INVESTMENT FUND MGMT, 7 CLIFFORD ST		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) __X__ Other (specify below)
See Remarks
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

LONDON, X0 W1S 2WE		 6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock, $1.00 par value 17,796,998
I
See footnote (1)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Equity Swap (obligation to buy) 01/09/2008 05/16/2011 Common Stock, $1.00 par value 1,000 $ 44.3 I See footnote (1)
Equity Swap (obligation to buy) 01/09/2008 12/16/2008 Common Stock, $1.00 par value 1,000 $ 44.23 I See footnote (1)
Equity Swap (obligation to buy) 01/14/2008 01/02/2009 Common Stock, $1.00 par value 28,410,100 $ 43.48 I See footnote (1)
Equity Swap (obligation to buy) 01/23/2008 01/22/2018 Common Stock, $1.00 par value 1,000 $ 44.14 I See footnote (1)
Equity Swap (obligation to buy) 01/23/2008 01/28/2015 Common Stock, $1.00 par value 1,000 $ 44.1 I See footnote (1)
Equity Swap (obligation to buy) 01/23/2008 12/31/2008 Common Stock, $1.00 par value 10,000 $ 43.26 I See footnote (1)
Equity Swap (obligation to buy) 01/24/2008 01/25/2010 Common Stock, $1.00 par value 1,000 $ 44.48 I See footnote (1)
Equity Swap (obligation to buy) 01/28/2008 12/31/2008 Common Stock, $1.00 par value 17,974,900 $ 42.63 I See footnote (1)
Equity Swap (obligation to buy) 02/06/2008 02/27/2009 Common Stock, $1.00 par value 1,000 $ 44.33 I See footnote (1)

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
HOHN CHRISTOPHER
C/O THE CHILDREN'S INVESTMENT FUND MGMT
7 CLIFFORD ST
LONDON, X0 W1S 2WE		   X     See Remarks
Childrens Investment Fund Management (UK) LLP
7 CLIFFORD STREET
LONDON, X0 W1S 2WE		       See Remarks
CHILDREN'S INVESTMENT FUND MANAGEMENT (CAYMAN) LTD.
PO BOX 309GT UGLAND HOUSE
SOUTH CHURCH STREET, GEORGE TOWN
GRAND CAYMAN, E9 BWI		       See Remarks
CHILDREN'S INVESTMENT MASTER FUND
PO BOX 309GT UGLAND HOUSE
SOUTH CHURCH STREET, GEORGE TOWN
GRAND CAYMAN, E9 BWI		       See Remarks

Signatures

/s/ Christopher Hohn 09/29/2008
**Signature of Reporting Person Date
/s/ The Children's Investment Fund Management (UK) LLP, by Christopher Hohn, Managing Partner 09/29/2008
**Signature of Reporting Person Date
/s/ The Children's Investment Fund Management (Cayman) Ltd., by David de Rosa, Director 09/29/2008
**Signature of Reporting Person Date
/s/ The Children's Investment Master Fund, by David de Rosa, Director 09/29/2008
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) The Children's Investment Fund Management (Cayman) Ltd., a Cayman Islands exempted company ("TCIF") and The Children's Investment Fund Management (UK) LLP, an English limited liability partnership ("TCIF UK") serve as management companies for The Children's Investment Master Fund, a Cayman Islands exempted company (the "TCI Fund"). Christopher Hohn is the managing partner of TCIF UK and the 100% owner of TCIF, and therefore is in a position to determine the investment and voting decisions made by the TCI Fund. The Reporting Persons disclaim beneficial ownership of any and all securities reported herein in excess of their respective pecuniary interest therein and this report shall not be deemed an admission that the Reporting Persons are the beneficial owners of such securities for purposes of Section 16 or for any other purpose. Mr. Hohn is a director of the Issuer.
 
Remarks:
TCIF UK, TCIF and the TCI Fund may be deemed to be directors by deputization by virtue of the fact that Mr. Hohn, the
 managing partner of TCIF UK and the 100% owner of TCIF, serves on the board of directors of the Issuer.

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