Fold Holdings (ticker: FLD), a bitcoin payment rewards service, listed on Nasdaq on February 19 through a merger with FTAC Emerald Acquisition Corp, a special purpose acquisition company (SPAC). On its first day of listing, FLD shares rose more than 30% to $13 before falling back to around $11. According to public filings, Fold currently holds 1,000 bitcoins, which is worth about $96 million at current prices, making it the second public company to hold bitcoin on its balance sheet after MicroStrategy, Semler Scientific, and Metaplanet.