Here are Friday's top research calls, including an upgrade for Costco and new coverage of McDonald's, GW Pharma and Kinder Morgan.
As more states legalize, your portfolio could smoke the competition.
This innovative biotech offers investors an intriguing play on the medical marijuana business.
In the first quarter of the year we've seen some high-profile IPOs. But they're not all created equal. Here's what investors should keep an eye out for ... and avoid.