Like the dollar bills on which its business is based, Wall Street has two faces. On one side, it is a place – a street in lower Manhattan. On the other, the term is shorthand for an industry – the US wholesale financial- services industry. Since Wall Street, the place, is the hub of this industry, much of the time the two meanings overlap. But lower Manhattan is by no means the totality of the US wholesale financial-services industry, and so sometimes the term embraces other locations and institutions
