Aurora Cannabis (NYSE: ACB) is one of the most popular marijuana stocks on the market today, but not everyone is a fan. Stifel analyst W. Andrew Carter recently lowered his rating on Aurora Cannabis' stock to "sell" from "hold." He also reduced his target price to CA$5 ($3.77) from CA$7 ($5.28). Image source: Getty Images. Carter argues that Aurora's fourth-quarter report indicates that the marijuana company is nowhere close to achieving profitability. Aurora generated a net loss of CA$297.9 million in its most recent quarter. Even its adjusted earnings, before interest, taxes, depreciation, and amortization (EBITDA) -- which excludes share-based compensation and a host of other charges and expenses -- came in negative, at a loss of CA$11.7 million. Although Carter acknowledged that Canada's impending legalization of cannabis derivatives -- such as edibles, infused beverages, and topicals -- should provide a catalyst for revenue growth, overall recreational marijuana sales are likely to be "more muted" than expected. In turn, Carter slashed his forecast for Aurora's 2020 full-year revenue to CA$485 million from CA$600 million. Carter also now expects Aurora to generate a larger EBITDA loss of CA$89 million, compared with his prior projection of CA$32 million. Moreover, Carter predicts that Aurora will need to raise "significant" capital before the end of Q1 2020. Unlike rivals Canopy Growth (NYSE: CGC), which received $4 billion in investments from beer giant Constellation Brands (NYSE: STZ) (NYSE: STZ-B), and Cronos Group (NASDAQ: CRON), which received a $1.8 billion investment from tobacco titan Altria (NYSE: MO), Aurora has yet to sell a significant stake in itself to a larger partner. As a result, Aurora has relatively low cash reserves, which Carter believes will make it challenging for it to invest in the potentially massive U.S. marijuana market. 10 stocks we like better than Aurora CannabisWhen investing geniuses David and Tom Gardner have a stock tip, it can pay to listen. After all, the newsletter they have run for over a decade, Motley Fool Stock Advisor, has quadrupled the market.* David and Tom just revealed what they believe are the 10 best stocks for investors to buy right now... and Aurora Cannabis wasn't one of them! That's right -- they think these 10 stocks are even better buys. See the 10 stocks *Stock Advisor returns as of June 1, 2019 Joe Tenebruso has no position in any of the stocks mentioned. The Motley Fool recommends Constellation Brands. The Motley Fool has a disclosure policy.Source