Reddit Inc. shares jumped as a lot as 67% over their preliminary public providing value after the social media firm and its shareholders raised $748 million priced on the prime of a marketed vary, sending a powerful sign that the window for US IPOs is reopening.The San Francisco-based firm’s shares traded on Thursday at $51.86 every as of 1:39 p.m. New York time, 53% above their $34 per share IPO value. The corporate had marketed 22 million shares for $31 to $34 every.