NEW YORK (AP) ¿ Standard & Poor's said late Tuesday it will remove Ensco International Inc. from the S&P 500 index because the oil driller is relocating its headquarters to the U.K., making it ineligible for inclusion in the index.

The company will be replaced on the index by industrial equipment maker Roper Industries Inc. after trading ends on Dec. 22. Roper, which is a part of the S&P MidCap 400, will be replaced on that index by managed network services provider TW Telecom Inc. on the same day.

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