WPX Energy Inc. (USA)
Changes in FTSE Indices

03 January 2012


Further to the notice announced on 20 December 2011 in relation to the demerger of WPX Energy Inc. (USA) from Williams Companies Inc. (USA, Constituent) and in accordance with the demerger rule, FTSE announces the following changes:

INDEXCHANGEEFFECTIVE FROM
START OF TRADING
FTSE All-World IndexWPX Energy (USA, B40PCD9) will remain in the index with an unchanged shares in issue total of 196,298,337 and an unchanged investability weighting of 100%.

Williams Companies (USA, 2967181) will remain in the index with an unchanged shares in issue total of 588,895,011 and an unchanged investability weighting of 100%.
05 January 2012
FTSE World Index Ex-MultinationalsWPX Energy will remain the index as detailed above.

Williams Companies will remain in the index as detailed above.
05 January 2012
FTSE Global Style IndexWPX Energy will remain the index as detailed above.

Williams Companies will remain in the index as detailed above.
05 January 2012
Macquarie 100 IndexWPX Energy will remain the index as detailed above.

Williams Companies will remain in the index as detailed above.

Tokyo Electric Power (Japan, 6895404) will be deleted from the index.
05 January 2012

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