West Fraser Timber Co. Ltd. shares closed 4% higher Monday (up $3.24 per share) on the news that it has completed the previously announced acquisition of Ontario's Norbord Inc.   The $4 billion acquisition, announced in November, officially closed Monday.  As a result of the acquisition, Norbord’s stock will be delisted on the New York Stock Exchange, and West Fraser’s stock will now list on the NYE under the symbol WFG. West Fraser’s stock symbol on the TSX will also change from WFT to WFG.  "Today marks a ...