Activist hedge fund Marcato Capital Management says it will vote against marijuana retailer Acreage Holdings' landmark sale to Canopy Growth. Canopy Growth paid $300 million in April for the right to buy Acreage Holdings pending the federal legalization of marijuana in the US. The shareholder vote is expected to happen in June. An activist hedge fund that owns a significant amount of shares in US marijuana retailer Acreage Holdings is opposing the company's landmark sale to Canadian marijuana retailer Canopy Growth.