Young marijuana companies seek capital.

As competition in the marijuana market increases, some companies are seeking additional capital and planning to go public in 2019. While federal law prohibits the use of marijuana, its medical usage is allowed in more than 30 states and the District of Columbia. Last year, the U.S. marijuana market gained considerable traction, says Michael Berger, founder of Technical420, a Miami-based company that conducts research on pot stocks. "There has been a significant increase in the number of U.S. companies planning to list on the Canadian stock exchange, and we expect to see several new offerings in 2019," he says. Here are seven marijuana companies that may have an IPO next year.