In Monday's Analysts' Actions, we highlight coverage initiations on retail stocks and a Twitter upgrade. RBC Capital started coverage on retailers Lululemon Athletica (LULU), American Eagle Outfitters (AEO), and Urban Outfitters (URBN), and Abercrombie & Fitch (ANF). Analysts started coverage with an OUTPERFORM rating on all of them, except for A&F. RBC slapped the teen retailer with an UNDERPERFORM rating with a price target of $17. Following last week's sell-off, Twitter is upgraded by analysts at Stifel Nicolaus to HOLD from SELL. The firm said the recent share price decline has now limited the downside risk over the next year. TheStreet's Kurumi Fukushima reports in New York.