Jeremy Allaire, co-founder and CEO of Circle, speaks at the 2025 TIME100 Summit in New York on April 23, 2025.Jemal Countess | TIME | Getty ImagesStablecoin issuer Circle stands to be one of the first significant cryptocurrency companies to go public in the U.S. That's not the only unusual aspect of its IPO.In Circle's updated prospectus on Tuesday, the company said it would sell 9.6 million shares in the offering, while existing shareholders would sell 14.4 million shares. It's exceedingly rare...