KEY POINTS Fintech start-up Payoneer says it will merge with a special purpose acquisition company, or SPAC, backed by Bancorp founder Betsy Cohen. The merger with Cohen’s SPAC, FTAC Olympus Acquisition Corp., values Payoneer at $3.3 billion. Payoneer, a New York City-based fintech start-up that specializes in facilitating cross-border payments, is set to go public by merging with a blank-check company led by Bancorp founder Betsy Cohen, the companies announced Wednesday. The merger with Cohen’s SPAC, FTAC Olympus Acquisition Corp., values Payoneer at $3.3 billion. The transaction also includes a $300 million private investment in public equity (PIPE) from existing investor Wellington Management, as well as Fidelity Management & Research Company, and Franklin Templeton, among others. So-called “blank check” companies are formed for the sole purpose of buying another company, and taking it public typically within two years. SPAC offerings have been on a hot streak over the last year...