toronto stocks fell in midday trading friday after rising earlier in the morning the energy telecom and utility sectors traded higher while the rest of the market traded in the red dragged down by the healthcare sector shares of biopharmaceutical company zymeworks inc rose after it rejected an unsolicited buyout offer from an activist investor at midday canadas sptsx composite index was down 029 at 2012258 and the bluechip sptsx 60 fell by 027 to 121707 shares of vancouverbased zymeworks inc rose more than 2 to 595 a share after the companys board rejected an unsolicited nonbinding 773 million buyout proposal from an affiliate of investment firm activist investor all blue capital the company said it rejected the bid after a comprehensive review that included independent analyses completed by external financial advisers chief executive kenneth galbraith said the bid was timed opportunistically during a period of substantial market dislocation shares of calgarybased cannabis retailer high tide inc that are listed in toronto rose 4 higher to c312 after it said membership in its cabana club loyalty program has more than doubled over the past seven months to over 515000 members shares of maple leaf foods inc rose less than 1 to c2695 after the canadian consumer food company said the toronto stock exchange has accepted the companys plans to buy back up to 10 of its public float of shares write to will feuer at willfeuerwsjcom