Why Virgin Galactic, Westport Fuel Systems, and Plug Power All Popped Today

Why Virgin Galactic, Westport Fuel Systems, and Plug Power All Popped Today

What do a space tourism company, a maker of liquefied natural gas-powered truck engines, and a vertically integrated hydrogen fuel company have in common? Well, the latter two -- Westport and Plug -- are both broadly defined as alternative energy companies, and I suppose you could call Virgin Galactic an "alternative to NASA" space stock. As of 11 a.m. EDT, shares of Virgin Galactic are gaining back 3.8% from last week's losses, Plug is tacking on 3.8% to last week's gains, and Westport is doing best of all -- powering ahead by a cool 10%.