By Leslie N. Masonson, MBA On January 22, 1993, a groundbreaking development unfolded on the American Stock Exchange (AMEX): the first U.S.-listed exchange-traded fund (ETF) made its debut. This financial innovation, introduced by the State Street Global Advisors, bore the name SPDR® S&P 500 ETF with the ticker symbol SPY. It boasted a unique [...]