CBOE in routine review of MFS options .  CHICAGO 1996-08-27  The Chicago Board Options Exchange ( CBOE ) said on Tuesday it was doing a routine investigation into trading in options on MFS Communications Co Inc shares .  On Monday , the company said it had agreed to be acquired by WorldCom Inc in a deal valued at $ 14 billion . [START_ENT] MFS [END_ENT] shares surged on the news while WorldCom fell on fears of dilution .  The New York Times said on Tuesday some of the options trading in MFS last Friday may suggest insider trading .  MFS options also trade on the American Stock Exchange and the Pacific Stock Exchange .  A spokesman for the American Stock Exchange would neither confirm or deny whether the exchange was looking into trading .  " If there is unusual activity , certainly we look at it , but that 's not to say we 're doing anything official , " he said .  Pacific Stock Exchange officials were not available .  One trader said trading in MFS options had increased steadily from about mid-August , and doubted whether any of last Friday 's activity was insider trading .  - Derivatives desk , 312 408-8750 / E-mail : derivatives@reuters.com
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