TORONTO - The private investment arm of the Ontario Teachers' Pension Plan is buying CTVglobemedia’s remaining stake in Maple Leaf Sports and Entertainment (MLSE). Financial details of the transaction were not disclosed.The additional 7.7% stake will boost the Teachers' ownership in MLSE to 66%. Lawrence M. Tanenbaum, president of Kilmer Sports and chairman of MLSE, continues to be the second largest shareholder of the sports and entertainment conglomerate with a 20.5% stake, after buying half of CTVgm’s ownership position earlier in the year."MLSE has proven itself an excellent investment for us over the years," said Erol Uzumeri, SVP of Teachers' Private...