soared on Monday after announcing a deal with its majority shareholder, a private-equity fund run by Peter Thiel called Privateer Holdings, to gradually sell the fund's remaining stake in Tilray over the next two years. Tilray will acquire Privateer Holdings in a so-called downstream merger -- a merger in which a partially owned subsidiary takes over its parent company, in this case Privateer Holdings. The deal will allow some 75 million of Tilray shares to be released in an "orderly" fashion over the next two years.