dec 15 reuters  canadas main stock index was subdued at the open on wednesday mirroring global stocks ahead of the us federal reserves policy outcome that is likely to signal a quicker end to the central banks stimulus measures at 931 am et 1431 gmt the toronto stock exchanges sptsx composite index gsptse was up 1279 points or 006 at 2066136 reporting by amal s in bengaluru editing by amy caren daniel