The North American Marijuana Index, which tracks the leading cannabis stocks in the U.S. and Canada, is right about where it was to start the year despite surging over the past few months of 2017. The same could be said for one of Canada's larger growers. Aphria (NASDAQOTH: APHQF) stock has risen in recent weeks, but it's still a bit below a peak it achieved in January. A somewhat smaller competitor with a U.S.