Gemini Space Station, the cryptocurrency exchange founded by Cameron and Tyler Winklevoss, has secured Nasdaq as a strategic investor as it moves forward with plans for a New York listing this week, according to two people familiar with the matter. Gemini, which could raise as much as $317 million in the initial public offering, has already lined up Nasdaq to buy $50 million in shares in a private placement at the time of the IPO, the people said, asking not to be identified because the