STX Seagate Technology Holdings PLC

CUSIP No. G7945M107
_____________________________________________________________________________
 (1) NAME OF REPORTING PERSON
 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
 Viking Global Investors LP
_____________________________________________________________________________
 (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 (a) [ ]
 (b) [x]
_____________________________________________________________________________
 (3) SEC USE ONLY

_____________________________________________________________________________
 (4) CITIZENSHIP OR PLACE OF ORGANIZATION
 Delaware
_____________________________________________________________________________

NUMBER OF (5) SOLE VOTING POWER
 0
SHARES ______________________________________________________________

BENEFICIALLY (6) SHARED VOTING POWER
 21,682,036
OWNED BY ______________________________________________________________

EACH (7) SOLE DISPOSITIVE POWER
 0
REPORTING ______________________________________________________________

PERSON WITH (8) SHARED DISPOSITIVE POWER
 21,682,036
_____________________________________________________________________________
 (9) AGGREGATE AMOUNT BENEFICIALLY OWNED
 BY EACH REPORTING PERSON
 21,682,036
_____________________________________________________________________________
 (10) CHECK BOX IF THE AGGREGATE AMOUNT
 IN ROW (9) EXCLUDES CERTAIN SHARES [ ]
_____________________________________________________________________________
 (11) PERCENT OF CLASS REPRESENTED
 BY AMOUNT IN ROW (9)
 5.0%
_____________________________________________________________________________
 (12) TYPE OF REPORTING PERSON
 PN
_____________________________________________________________________________

CUSIP No. G7945M107
_____________________________________________________________________________
 (1) NAME OF REPORTING PERSON
 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
 Viking Global Performance LLC
_____________________________________________________________________________
 (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 (a) [ ]
 (b) [x]
_____________________________________________________________________________
 (3) SEC USE ONLY

_____________________________________________________________________________
 (4) CITIZENSHIP OR PLACE OF ORGANIZATION
 Delaware
_____________________________________________________________________________

NUMBER OF (5) SOLE VOTING POWER
 0
SHARES ______________________________________________________________

BENEFICIALLY (6) SHARED VOTING POWER
 20,073,236
OWNED BY ______________________________________________________________

EACH (7) SOLE DISPOSITIVE POWER
 0
REPORTING ______________________________________________________________

PERSON WITH (8) SHARED DISPOSITIVE POWER
 20,073,326
_____________________________________________________________________________
 (9) AGGREGATE AMOUNT BENEFICIALLY OWNED
 BY EACH REPORTING PERSON
 20,073,326
_____________________________________________________________________________
 (10) CHECK BOX IF THE AGGREGATE AMOUNT
 IN ROW (9) EXCLUDES CERTAIN SHARES [ ]
_____________________________________________________________________________
 (11) PERCENT OF CLASS REPRESENTED
 BY AMOUNT IN ROW (9)
 4.7%
_____________________________________________________________________________
 (12) TYPE OF REPORTING PERSON
 OO
_____________________________________________________________________________

CUSIP No. G7945M107
_____________________________________________________________________________
 (1) NAME OF REPORTING PERSON
 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
 Viking Global Equities LP
_____________________________________________________________________________
 (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 (a) [ ]
 (b) [x]
_____________________________________________________________________________
 (3) SEC USE ONLY

_____________________________________________________________________________
 (4) CITIZENSHIP OR PLACE OF ORGANIZATION
 Delaware
_____________________________________________________________________________

NUMBER OF (5) SOLE VOTING POWER
 0
SHARES ______________________________________________________________

BENEFICIALLY (6) SHARED VOTING POWER
 7,007,000
OWNED BY ______________________________________________________________

EACH (7) SOLE DISPOSITIVE POWER
 0
REPORTING ______________________________________________________________

PERSON WITH (8) SHARED DISPOSITIVE POWER
 7,007,000
_____________________________________________________________________________
 (9) AGGREGATE AMOUNT BENEFICIALLY OWNED
 BY EACH REPORTING PERSON
 7,007,000
_____________________________________________________________________________
 (10) CHECK BOX IF THE AGGREGATE AMOUNT
 IN ROW (9) EXCLUDES CERTAIN SHARES [ ]
_____________________________________________________________________________
 (11) PERCENT OF CLASS REPRESENTED
 BY AMOUNT IN ROW (9)
 1.6%
_____________________________________________________________________________
 (12) TYPE OF REPORTING PERSON
 PN
_____________________________________________________________________________

CUSIP No. G7945M107
_____________________________________________________________________________
 (1) NAME OF REPORTING PERSON
 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
 Viking Global Equities II LP
_____________________________________________________________________________
 (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 (a) [ ]
 (b) [x]
_____________________________________________________________________________
 (3) SEC USE ONLY

_____________________________________________________________________________
 (4) CITIZENSHIP OR PLACE OF ORGANIZATION
 Delaware
_____________________________________________________________________________

NUMBER OF (5) SOLE VOTING POWER
 0
SHARES ______________________________________________________________

BENEFICIALLY (6) SHARED VOTING POWER
 403,200
OWNED BY ______________________________________________________________

EACH (7) SOLE DISPOSITIVE POWER
 0
REPORTING ______________________________________________________________

PERSON WITH (8) SHARED DISPOSITIVE POWER
 403,200
_____________________________________________________________________________
 (9) AGGREGATE AMOUNT BENEFICIALLY OWNED
 BY EACH REPORTING PERSON
 403,200
_____________________________________________________________________________
 (10) CHECK BOX IF THE AGGREGATE AMOUNT
 IN ROW (9) EXCLUDES CERTAIN SHARES [ ]
_____________________________________________________________________________
 (11) PERCENT OF CLASS REPRESENTED
 BY AMOUNT IN ROW (9)
 0.1%
_____________________________________________________________________________
 (12) TYPE OF REPORTING PERSON
 PN
_____________________________________________________________________________

CUSIP No. G7945M107
_____________________________________________________________________________
 (1) NAME OF REPORTING PERSON
 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
 VGE III Portfolio Ltd.
_____________________________________________________________________________
 (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 (a) [ ]
 (b) [x]
_____________________________________________________________________________
 (3) SEC USE ONLY

_____________________________________________________________________________
 (4) CITIZENSHIP OR PLACE OF ORGANIZATION
 Cayman Islands
_____________________________________________________________________________

NUMBER OF (5) SOLE VOTING POWER
 0
SHARES ______________________________________________________________

BENEFICIALLY (6) SHARED VOTING POWER
 12,663,036
OWNED BY ______________________________________________________________

EACH (7) SOLE DISPOSITIVE POWER
 0
REPORTING ______________________________________________________________

PERSON WITH (8) SHARED DISPOSITIVE POWER
 12,663,036
_____________________________________________________________________________
 (9) AGGREGATE AMOUNT BENEFICIALLY OWNED
 BY EACH REPORTING PERSON
 12,663,036
_____________________________________________________________________________
 (10) CHECK BOX IF THE AGGREGATE AMOUNT
 IN ROW (9) EXCLUDES CERTAIN SHARES [ ]
_____________________________________________________________________________
 (11) PERCENT OF CLASS REPRESENTED
 BY AMOUNT IN ROW (9)
 2.9%
_____________________________________________________________________________
 (12) TYPE OF REPORTING PERSON
 OO
_____________________________________________________________________________

CUSIP No. G7945M107
_____________________________________________________________________________
 (1) NAME OF REPORTING PERSON
 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
 Viking Long Fund GP LLC
_____________________________________________________________________________
 (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 (a) [ ]
 (b) [x]
_____________________________________________________________________________
 (3) SEC USE ONLY

_____________________________________________________________________________
 (4) CITIZENSHIP OR PLACE OF ORGANIZATION
 Delaware
_____________________________________________________________________________

NUMBER OF (5) SOLE VOTING POWER
 0
SHARES ______________________________________________________________

BENEFICIALLY (6) SHARED VOTING POWER
 1,608,800
OWNED BY ______________________________________________________________

EACH (7) SOLE DISPOSITIVE POWER
 0
REPORTING ______________________________________________________________

PERSON WITH (8) SHARED DISPOSITIVE POWER
 1,608,800
_____________________________________________________________________________
 (9) AGGREGATE AMOUNT BENEFICIALLY OWNED
 BY EACH REPORTING PERSON
 1,608,800
_____________________________________________________________________________
 (10) CHECK BOX IF THE AGGREGATE AMOUNT
 IN ROW (9) EXCLUDES CERTAIN SHARES [ ]
_____________________________________________________________________________
 (11) PERCENT OF CLASS REPRESENTED
 BY AMOUNT IN ROW (9)
 0.4%
_____________________________________________________________________________
 (12) TYPE OF REPORTING PERSON
 OO
_____________________________________________________________________________

CUSIP No. G7945M107
_____________________________________________________________________________
 (1) NAME OF REPORTING PERSON
 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
 Viking Long Fund Master Ltd.
_____________________________________________________________________________
 (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 (a) [ ]
 (b) [x]
_____________________________________________________________________________
 (3) SEC USE ONLY

_____________________________________________________________________________
 (4) CITIZENSHIP OR PLACE OF ORGANIZATION
 Cayman Islands
_____________________________________________________________________________

NUMBER OF (5) SOLE VOTING POWER
 0
SHARES ______________________________________________________________

BENEFICIALLY (6) SHARED VOTING POWER
 1,608,800
OWNED BY ______________________________________________________________

EACH (7) SOLE DISPOSITIVE POWER
 0
REPORTING ______________________________________________________________

PERSON WITH (8) SHARED DISPOSITIVE POWER
 1,608,800
_____________________________________________________________________________
 (9) AGGREGATE AMOUNT BENEFICIALLY OWNED
 BY EACH REPORTING PERSON
 1,608,800
_____________________________________________________________________________
 (10) CHECK BOX IF THE AGGREGATE AMOUNT
 IN ROW (9) EXCLUDES CERTAIN SHARES [ ]
_____________________________________________________________________________
 (11) PERCENT OF CLASS REPRESENTED
 BY AMOUNT IN ROW (9)
 0.4%
_____________________________________________________________________________
 (12) TYPE OF REPORTING PERSON
 CO
_____________________________________________________________________________

CUSIP No. G7945M107
_____________________________________________________________________________
 (1) NAME OF REPORTING PERSON
 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
 O. Andreas Halvorsen
_____________________________________________________________________________
 (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 (a) [ ]
 (b) [x]
_____________________________________________________________________________
 (3) SEC USE ONLY

_____________________________________________________________________________
 (4) CITIZENSHIP OR PLACE OF ORGANIZATION
 Norway
_____________________________________________________________________________

NUMBER OF (5) SOLE VOTING POWER
 0
SHARES ______________________________________________________________

BENEFICIALLY (6) SHARED VOTING POWER
 21,682,036
OWNED BY ______________________________________________________________

EACH (7) SOLE DISPOSITIVE POWER
 0
REPORTING ______________________________________________________________

PERSON WITH (8) SHARED DISPOSITIVE POWER
 21,682,036
_____________________________________________________________________________
 (9) AGGREGATE AMOUNT BENEFICIALLY OWNED
 BY EACH REPORTING PERSON
 21,682,036
_____________________________________________________________________________
 (10) CHECK BOX IF THE AGGREGATE AMOUNT
 IN ROW (9) EXCLUDES CERTAIN SHARES [ ]
_____________________________________________________________________________
 (11) PERCENT OF CLASS REPRESENTED
 BY AMOUNT IN ROW (9)
 5.0%
_____________________________________________________________________________
 (12) TYPE OF REPORTING PERSON
 IN
_____________________________________________________________________________

CUSIP No. G7945M107
_____________________________________________________________________________

 (1) NAME OF REPORTING PERSON
 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
 David C. Ott
_____________________________________________________________________________

 (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 (a) [ ]
 (b) [x]
_____________________________________________________________________________

 (3) SEC USE ONLY
_____________________________________________________________________________

 (4) CITIZENSHIP OR PLACE OF ORGANIZATION
 United States
_____________________________________________________________________________

NUMBER OF (5) SOLE VOTING POWER
 0
SHARES ______________________________________________________________

BENEFICIALLY (6) SHARED VOTING POWER
 21,682,036
OWNED BY ______________________________________________________________

EACH (7) SOLE DISPOSITIVE POWER
 0
REPORTING ______________________________________________________________

PERSON WITH (8) SHARED DISPOSITIVE POWER
 21,682,036
_____________________________________________________________________________
 (9) AGGREGATE AMOUNT BENEFICIALLY OWNED
 BY EACH REPORTING PERSON
 21,682,036
_____________________________________________________________________________
 (10) CHECK BOX IF THE AGGREGATE AMOUNT
 IN ROW (9) EXCLUDES CERTAIN SHARES [ ]
_____________________________________________________________________________
 (11) PERCENT OF CLASS REPRESENTED
 BY AMOUNT IN ROW (9)
 5.0%
_____________________________________________________________________________
 (12) TYPE OF REPORTING PERSON
 IN
_____________________________________________________________________________

CUSIP No. G7945M107
_____________________________________________________________________________
 (1) NAME OF REPORTING PERSON
 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
 Thomas W. Purcell, Jr.
_____________________________________________________________________________

 (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 (a) [ ]
 (b) [x]
_____________________________________________________________________________

 (3) SEC USE ONLY
_____________________________________________________________________________

 (4) CITIZENSHIP OR PLACE OF ORGANIZATION
 United States
_____________________________________________________________________________

NUMBER OF (5) SOLE VOTING POWER
 0
SHARES ______________________________________________________________

BENEFICIALLY (6) SHARED VOTING POWER
 21,682,036
OWNED BY ______________________________________________________________

EACH (7) SOLE DISPOSITIVE POWER
 0
REPORTING ______________________________________________________________

PERSON WITH (8) SHARED DISPOSITIVE POWER
 21,682,036
_____________________________________________________________________________
 (9) AGGREGATE AMOUNT BENEFICIALLY OWNED
 BY EACH REPORTING PERSON
 21,682,036
_____________________________________________________________________________
 (10) CHECK BOX IF THE AGGREGATE AMOUNT
 IN ROW (9) EXCLUDES CERTAIN SHARES [ ]
_____________________________________________________________________________
 (11) PERCENT OF CLASS REPRESENTED
 BY AMOUNT IN ROW (9)
 5.0%
_____________________________________________________________________________
 (12) TYPE OF REPORTING PERSON
 IN
_____________________________________________________________________________

CUSIP No. G7945M107

ITEM 1(a). NAME OF ISSUER:
 Seagate Technology Public Limited Company

ITEM 1(b). ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:
 Arthur Cox Building, Earlsfort Terrace
 Dublin 2, Ireland

ITEM 2(a). NAME OF PERSON FILING:
 Viking Global Performance LLC ("VGP"),
 Viking Global Investors LP ("VGI"),
 Viking Global Equities LP ("VGE"),
 Viking Global Equities II LP ("VGEII"),
 VGE III Portfolio Ltd. ("VGEIII")
 Viking Long Fund GP LLC ("VLFGP")
 Viking Long Fund Master Ltd. ("VLFM")
 O. Andreas Halvorsen, David C. Ott and
 Thomas W. Purcell, Jr. (collectively, the "Reporting Persons")

ITEM 2(b). ADDRESS OF PRINCIPAL OFFICE OR, IF NONE, RESIDENCE:
 The business address of each of the Reporting Persons is
 55 Railroad Avenue, Greenwich, Connecticut 06830.

ITEM 2(c). CITIZENSHIP:
 VGE, VGEII and VGI are Delaware limited partnerships,
 VGEIII and VLFM are Cayman Island exempted companies,
 and VGP and VLFGP are both Delaware limited liability
 companies. O. Andreas Halvorsen is a citizen of Norway.
 David C. Ott and Thomas W. Purcell, Jr. are citizens of
 the United States.

ITEM 2(d). TITLE OF CLASS OF SECURITIES:
 Ordinary shares, par value $0.00001 per share ("Common Stock")

ITEM 2(e). CUSIP NUMBER: G7945M107

ITEM 3. IF THIS STATEMENT IS FILED PURSUANT TO 13d-1(b) OR 13d-2(b) OR
 (c), CHECK WHETHER THE PERSON FILING IS A:

 (a) [ ] Broker or dealer registered under Section 15 of the
 Act

 (b) [ ] Bank as defined in Section 3(a)(6) of the Act

 (c) [ ] Insurance Company as defined in Section 3(a)(19) of
 the Act

 (d) [ ] Investment Company registered under Section 8 of the
 Investment Company Act of 1940

 (e) [ ] Investment Adviser registered under Section 203 of the
 Investment Advisers Act of 1940: see Rule 13d-
 1(b)(1)(ii)(E)

 (f) [ ] Employee Benefit Plan, Pension Fund which is subject
 to the provisions of the Employee Retirement Income
 Security Act of 1974 or Endowment Fund; see Rule 13d-
 1(b)(1)(ii)(F)

CUSIP No. G7945M107

 (g) [ ] Parent Holding Company, in accordance with Rule 13d-
 1(b)(ii)(G);

 (h) [ ] Savings Associations as defined in Section 3(b) of the
 Federal Deposit Insurance Act;

 (i) [ ] Church Plan that is excluded from the definition of an
 investment company under Section 3(c)(14) of the
 Investment Company Act of 1940;

 (j) [ ] A non-U.S. institution in accordance with
 Rule 240.13d-1(b)(1)(ii)(J)

 (K) [ ] Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
 If filing as a non-U.S. institution in accordance with
 Rule 240.13d-1(b)(1)(ii)(J), please specify
 the type of institution:

ITEM 4. OWNERSHIP.

 A. VGI
 (a) Amount beneficially owned 21,682,036
 (b) Percent of class: 5.0%
 The percentages used herein and in this Item 4 are calculated
 based upon the Company's Form 10-Q for the period ended April
 1,2011 filed on May 3, 2011 which states that as of April 26,
 2011, there were 430,085,128 shares of Common Stock
 outstanding.


 (c) Number of shares as to which such person has:
 (i) sole power to vote or to direct the vote
 0
 (ii) shared power to vote or to direct the vote
 21,682,036
 (iii) sole power to dispose or to direct the disposition
 of 0
 (iv) shared power to dispose or to direct the disposition
 of 21,682,036

 VGI provides managerial services to VGE, VGEII,VGEIII
 and VLFM. VGI has the authority to dispose of and vote
 the shares of Common Stock.

 Based on Rule 13d-3 of the Securities Exchange Act of 1934,
 as amended (the "Act"), VGI may be deemed to beneficially
 own the shares of Common Stock directly held by VGE, VGEII,
 VGEIII and VLFM. VGI does not directly own any shares of
 Common Stock.

CUSIP No. G7945M107

 B. VGP
 (a) Amount beneficially owned: 20,073,236
 (b) Percent of class: 4.7%
 (c) Number of shares as to which such person has:
 (i) sole power to vote or to direct the vote
 0
 (ii) shared power to vote or to direct the vote
 20,073,236
 (iii) sole power to dispose or to direct the disposition
 of 0
 (iv) shared power to dispose or to direct the disposition
 of 20,073,236

 VGP, as the general partner of VGE and VGEII, has the
 authority to dispose of and vote the shares of Common Stock
 directly owned by VGE and VGEII. VGP serves as investment
 manager to VGEIII and has the authority to dispose of and
 vote the shares of Common Stock directly owned by VGEIII.
 VGP does not directly own any shares of Common Stock.

 Based on Rule 13d-3 of the Act, VGP may be deemed to
 beneficially own the shares of Common Stock directly held by
 VGE, VGEII and VGEIII.

 C. VLFGP
 (a) Amount beneficially owned: 1,608,800
 (b) Percent of class: 0.4%
 (c) Number of shares as to which such person has:
 (i) sole power to vote or to direct the vote
 0
 (ii) shared power to vote or to direct the vote
 1,608,800
 (iii) sole power to dispose or to direct the disposition
 of 0
 (iv) shared power to dispose or to direct the disposition
 of 1,608,800

 VLFGP, serves as the investment manager of VLFM and has the
 authority to dispose of and vote the shares of Common Stock
 directly owned by VLFM. VLFGP does not directly own
 any shares of Common Stock.

 Based on Rule 13d-3 of the Act, VLFGP may be deemed to
 beneficially own the shares of Common Stock directly held by
 VLFM.

 D. VGE
 (a) Amount beneficially owned: 7,007,000
 (b) Percent of class: 1.6%
 (c) Number of shares as to which such person has:
 (i) sole power to vote or to direct the vote
 0
 (ii) shared power to vote or to direct the vote
 7,007,000
 (iii) sole power to dispose or to direct the disposition
 of 0
 (iv) shared power to dispose or to direct the disposition
 of 7,007,000

 VGE has the authority to dispose of and vote the shares
 of Common Stock directly owned by it, which power may be
 exercised by its general partner, VGP, and by VGI, an
 affiliate of VGP, that provides managerial services to VGE.

 E. VGE II
 (a) Amount beneficially owned: 403,200
 (b) Percent of class: 0.1%
 (c) Number of shares as to which such person has:
 (i) sole power to vote or to direct the vote
 0
 (ii) shared power to vote or to direct the vote
 403,200
 (iii) sole power to dispose or to direct the disposition
 of 0
 (iv) shared power to dispose or to direct the disposition
 of 403,200

 VGEII has the authority to dispose of and vote the shares
 of Common Stock directly owned by it, which power may be
 exercised by its general partner, VGP and by VGI, an
 affiliate of VGP, which provides managerial services to VGEII.

 F. VGEIII
 (a) Amount beneficially owned: 12,663,036
 (b) Percent of class: 2.9%
 (c) Number of shares as to which such person has:
 (i) sole power to vote or to direct the vote
 0
 (ii) shared power to vote or to direct the vote
 12,663,036
 (iii) sole power to dispose or to direct the disposition
 of 0
 (iv) shared power to dispose or to direct the disposition
 of 12,663,036
 VGEIII has the authority to dispose of and vote the shares
 of Common Stock directly owned by it, which power may be
 exercised by its investment manager, VGP and by VGI, an
 affiliate of VGP, which provides managerial services to VGEIII.
 Viking Global Equities III Ltd. (a Cayman Islands exempted
 company) invests substantially all of its assets through
 VGEIII.

 G. VLFM
 (a) Amount beneficially owned: 1,608,800
 (b) Percent of class: 0.4%
 (c) Number of shares as to which such person has:
 (i) sole power to vote or to direct the vote
 0
 (ii) shared power to vote or to direct the vote
 1,608,800
 (iii) sole power to dispose or to direct the disposition
 of 0
 (iv) shared power to dispose or to direct the disposition
 of 1,608,800

 VLFM has the authority to dispose of and vote the
 shares of Common Stock directly owned by it, which power may
 be exercised by its investment manager, VLFGP and by
 VGI, an affiliate of VLFGP, which provides managerial
 services to VLFM. Viking Long Fund LP (a Delaware limited
 partnership)and Viking Long Fund III Ltd. (a Cayman Islands
 exempted company), through its investment in Viking Long
 Fund Intermediate LP (a Cayman Islands limited partnership),
 invest substantially all of their assets through VLFM.

CUSIP No. G7945M107

 H. O. Andreas Halvorsen, David C. Ott and Thomas W. Purcell, Jr.
 (a) Amount beneficially owned: 21,682,036
 (b) Percent of class: 5.0%
 (c) Number of shares as to which such person has:
 (i) sole power to vote or to direct the vote
 0
 (ii) shared power to vote or to direct the vote
 21,682,036
 (iii) sole power to dispose or to direct the disposition
 of 0
 (iv) shared power to dispose or to direct the disposition
 of 21,682,036

 Messrs. Halvorsen, Ott, and Purcell, as Executive Committee
 Members of VGI, VGP, and VLFGP, have shared authority to
 dispose of and vote the shares of Common Stock beneficially
 owned by VGI, VGP and VLFGP. None of Messrs. Halvorsen, Ott
 and Purcell directly owns any shares of Common Stock.

 Based on Rule 13d-3 of the Act, each may be deemed to
 beneficially own the shares of Common Stock directly held by
 VGE, VGE II, VGEIII and VLFM.

ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS.
 If this statement is being filed to report the fact that as of the
 date hereof the Reporting Persons has ceased to be the beneficial
 owner of more than five percent of the class of securities,
 check the following.[]

ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON.
 Yes, see Item 4.

ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED
 THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY.
 Not applicable.

ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP.
 Not applicable.

ITEM 9. NOTICE OF DISSOLUTION OF GROUP.
 Not applicable.

ITEM 10. CERTIFICATION. (if filing pursuant to Rule 13d-1(c))
 By signing below each Reporting Person certifies that, to the best
 of its knowledge and belief, the securities referred to above were
 not acquired and are not held for the purpose of or with the effect
 of changing or influencing the control of the issuer of the
 securities and were not acquired and not held in connection with or
 as a participant in any transaction having that purpose or effect.

CUSIP No. G7945M107

SIGNATURES

 After reasonable inquiry and to the best of our knowledge and belief,
the undersigned certify that the information set forth in this statement is
true, complete and correct.

DATED: May 13, 2011
 /s/ O. ANDREAS HALVORSEN
 By: O. Andreas Halvorsen - individually and
 as an Executive Committee Member of
 VIKING GLOBAL PERFORMANCE LLC, on behalf
 of itself and VIKING GLOBAL EQUITIES LP,
 VIKING GLOBAL EQUITIES II LP,VGE III PORTFOLIO LTD.
 and as an Executive Committee Member of
 Viking Global Partners LLC, on behalf of
 VIKING GLOBAL INVESTORS LP, and as
 an Executive Committee Member of
 VIKING LONG FUND GP LLC on behalf of itself
 and VIKING LONG FUND MASTER LTD.

 /s/ DAVID C. OTT
 By: David C. Ott- individually and
 as an Executive Committee Member of
 VIKING GLOBAL PERFORMANCE LLC, on behalf
 of itself and VIKING GLOBAL EQUITIES LP,
 VIKING GLOBAL EQUITIES II LP,VGE III PORTFOLIO LTD.
 and as an Executive Committee Member of
 Viking Global Partners LLC, on behalf of
 VIKING GLOBAL INVESTORS LP, and as
 an Executive Committee Member of
 VIKING LONG FUND GP LLC on behalf of itself
 and VIKING LONG FUND MASTER LTD.


 /s/ THOMAS W. PURCELL, JR.
 By: Thomas W. Purcell, Jr.- individually and
 as an Executive Committee Member of
 VIKING GLOBAL PERFORMANCE LLC, on behalf
 of itself and VIKING GLOBAL EQUITIES LP,
 VIKING GLOBAL EQUITIES II LP,VGE III PORTFOLIO LTD.
 and as an Executive Committee Member of
 Viking Global Partners LLC, on behalf of
 VIKING GLOBAL INVESTORS LP, and as
 an Executive Committee Member of
 VIKING LONG FUND GP LLC on behalf of itself
 and VIKING LONG FUND MASTER LTD.