Host Hotels & Resorts (HST) - Get Report will replace Phelps Dodge( PD) in the S&P 500 Index after the close of trading on a date to be announced.

Standard & Poor's said late Monday that the move stems from Phelps Dodge's pending acquisition by

Freeport-McMoRan

(FCX) - Get Report

TST Recommends

in a deal still pending final approval.

Shares of Host Hotels rose 4.3% in after-hours trading to $27.13; index funds that mirror the S&P 500 would be expected to buy the stock to align their holdings.