BUZZ-Amica Mature Lifestyles Inc: To be taken private for C$578 mln
** Luxury senior homes operator's shares rise as much as 113 pct to a record high of C$18.70
** BayBridge Seniors Housing Inc, owned by Ontario Teachers' Pension Plan Board, will take Amica private for C$578 million
** The C$18.75 per share cash offer is a premium of 113 percent to Amica's Tuesday close
** Vancouver-based Amica operates 26 luxury seniors residential properties in Canada, while BayBridge Seniors Housing owns and operates 35 senior living communities in Canada and six in the United States
** 5 of 6 brokerages rate the stock "buy" or higher, 1 "hold"; median PT C$8.88
** Up to Tuesday's close, stock had risen 25 pct this year
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