Select Sector Spdr Trust - Statement of Ownership (SC 13G)

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(AMENDMENT NO. ________)*

Select Sector SPDR Trust - Utilities

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(Name of Issuer)

Exchange Traded Fund

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(Title of Class of Securities)

81369Y886

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(CUSIP Number)

*The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

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Cusip No. 81369Y886

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13G

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1. NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

State of Wisconsin Investment Board 39-6006423 ____________________________________________________________________________ 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP * (a)____ Not Applicable (b)____ ____________________________________________________________________________

3. SEC USE ONLY

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4. CITZENSHIP OR PLACE OF ORGANIZATION
Madison, Wisconsin

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NUMBERS OF 5. SOLE VOTING POWER SHARES 3,125,000 BENEFICIALLY __________________________________________________________ OWNED BY 6. SHARED VOTING POWER EACH Not Applicable REPORTING __________________________________________________________ PERSON 7. SOLE DISPOSITIVE POWER WITH 3,125,000 __________________________________________________________ 8. SHARED DISPOSITIVE POWER Not Applicable ____________________________________________________________________________

9. AGGREGATE AMOUNT BENEFICALLY OWNED BY EACH REPORTING PERSON 3,125,000

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10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
SHARES * Not Applicable

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11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 5.22%

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12. TYPE OF REPORTING PERSON * EP (Public Pension Fund)

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* SEE INSTRUCTIONS BEFORE FILLING OUT!

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ITEM 1. ISSUER
(a) Select Sector SPDR Trust (Utilities)
(b) c/o State Street Bank and Trust 225 Franklin Street Boston, MA 02210

ITEM 2. PERSON FILING
(a) State of Wisconsin Investment Board (b) P.O. Box 7842 Madison, WI 53707
(c) Wisconsin State Agency
(d) See cover page
(e) See cover page

ITEM 3. THIS STATEMENT IS FILED PURSUANT TO 13d-1(b) or 13d-2(b) AND THE
STATE OF WISCONSIN INVESTMENT BOARD IS A GOVERNMENT AGENCY WHICH MANAGES PUBLIC PENSION FUNDS SUBJECT TO PROVISIONS COMPARABLE TO ERISA.

ITEM 4. OWNERSHIP
(a) See Row 9 on Page 2
(b) See Row 11 on Page 2
(c) The State of Wisconsin Investment Board retains sole voting and dispositive power for all shares.

ITEM 5. IF THIS STATEMENT IS BEING FILED TO REPORT THE FACT THAT AS OF THE
DATE HEREOF THE REPORTING PERSON HAS CEASED TO BE THE BENEFICIAL OWNER OF MORE THAN FIVE PERCENT OF THE CLASS OF SECURITIES, CHECK THE FOLLOWING _____.

ITEM 6. NOT APPLICABLE

ITEM 7. NOT APPLICABLE

ITEM 8. NOT APPLICABLE

ITEM 9. NOT APPLICABLE

ITEM 10. CERTIFICATION

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired in the ordinary course of business and were not acquired for the purpose of and do not have the effect of changing or influencing the control of the issuer of such securities and were not acquired in connection with or as a participant in any transaction having such purpose or effect.

SIGNATURE

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

February 2, 2008
Date

/s/ David Villa - - - - - - - - - Signature

David Villa, Chief Investment Officer - Investment Groups

Name/Title