Voyager Technologies Inc. shares gained as much as 139% in their debut after the company raised $383 million in an upsized US initial public offering.The Denver-based defense contractor’s stock traded at $69.

Shares of space- and defense-technology company Voyager Technologies climbed in their New York Stock Exchange debut, another sign of an improving market for initial public offerings.

What Happened: Space and defense tech firm Voyager Technologies made its public debut on the New York Stock Exchange Wednesday. The stock opened for trading at $69.75 after the company priced its IPO at $31 per share. Voyager shares pared gains throughout the session and closed the day up 82.2% at $56.48, according to Benzinga Pro.