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Halliburton (HAL) will boost its quarterly dividend by 20% to 15 cents a share, to be paid Dec. 27 to shareholders of record on Dec. 6. The oilfield services provider said it expects to buy back more shares and raise its dividend more frequently. Halliburton repurchased 68 mil shares for $3.3 bil during Q3. Shares rose 2.4% to 54.40.