CBE Cooper Industries, Plc (Ireland)

10:17 EST - Dollar General (DG) up 1% to $49.78 ahead of its being added to the S&P 500 now that member Cooper Industries (CBE) is being bought by Eaton (ETN). The price, despite the gain, is still a bargain Citi says. Firm estimates when DG is added to the S&P 500, passive indexers will need to buy about 29.2 million shares, equal to 9.5 days of average daily volume. This demand would drive an estimated 6% increase in the stock price, excluding any overhang from shares sold by current holders, firm says. (karen.talley@dowjones.com)

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