Merck & Co. Inc. (USA): Acquisition of Schering-Plough Corporation (USA)
Changes In FTSE Indices

03 November 2009


Following the completion of the acquisition of Schering-Plough Corporation (USA, Constituent) by Merck & Co. Inc. (USA, Constituent) and in accordance with the terms of the merger, FTSE announces the following changes:

INDEXCHANGEEFFECTIVE FROM
START OF TRADING
FTSE All-World IndexMerck & Co. (USA, 2578312) will remain in the index with an increased shares in issue total of 3,048,279,740 and an unchanged investability weight of 100%.

Schering-Plough (USA, 2778844) will be deleted from the index.
05 November 2009
FTSE MultinationalsMerck & Co. will remain in the index as detailed above.

Schering-Plough will be deleted from the index.
05 November 2009
FTSE Global 100Merck & Co. will remain in the index as detailed above.

Schering-Plough will be deleted from the index.

Endesa S.A. (Spain, 5271782) will be added to the index with a shares in issue total of 1,058,752,000 and an investability weight of 8%
05 November 2009
FTSE Global Sector - PharmaceuticalsMerck & Co. will remain in the index as detailed above.

Schering-Plough will be deleted from the index.

UCB S.A. (Belgium, 5596991) will be added to the index with a shares in issue total of 182,270,795 and an investability weight of 75%
05 November 2009
FTSE Global Style IndexMerck & Co. will remain in the index as detailed above.

Schering-Plough will be deleted from the index.
05 November 2009
FTSE4Good Global IndexMerck & Co. will remain in the index as detailed above.

Schering-Plough will be deleted from the index.
05 November 2009
FTSE4Good Global 100 IndexMerck & Co. will remain in the index as detailed above.

Schering-Plough will be deleted from the index.

Repsol YPF S.A. (Spain, 5669354) will be added to the index with a shares in issue total of 1,220,509,000 and an investability weight of 100%
05 November 2009
FTSE4Good USA IndexMerck & Co. will remain in the index as detailed above.

Schering-Plough will be deleted from the index.
05 November 2009
FTSE4Good USA 100 IndexMerck & Co. will remain in the index as detailed above.

Schering-Plough will be deleted from the index.

CBS (USA, B0SRLH6) will be added to the index with a shares in issue total of 625,461,052 and an investability weight of 100%
05 November 2009

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