Gemini Space Station is blasting off. The US crypto exchange led by brothers Cameron and Tyler Winklevoss priced its long-awaited initial public offering on Thursday at $28 a share, above the marketed range of$24 to $26. The sale raised$425 million and valued the company at over $3 billion, Reuters reported. Gemini will begin to trade on the Nasdaq, a New York City stock exchange, on Friday under the ticker GEMI. The listing drew investor demand, with bankers halting new orders after bids topped 20 ti ...