Stocks to watch at the start of the week: Aurora Cannabis (ACB) - looking for the cannabis stock to retest the $5 lows as Health Canada delays Canada Cannabis 2.0. Analysts will have to cut FY20 revenue estimates. All Canadian cannabis stocks fall into this category. AMD (AMD) - buy the weakness. Twitter (TWTR) - Loop Capital reconfirmed the $55 price target. Investors should've bought the weakness from the negative analyst call last week. Twitter maintains nearly 50% upside from here. Alibaba (BABA) - the Chinese company proposes an 1:8 stock split that will reprice the stock to $20 and allow for more share issuances. Strong tech stocks now trade in the $100s so the investor sentiment is likely to change on this move. The company pushing Jack Ma out of the business and a Chinese stock that isn't too far from the highs is the recipe for a stock to avoid. Disclosure: Long TWTR