the.com/stockbroker

means A licensed professional who buys and sells stocks and other securities on behalf of clients, usually for a commission or fee.

from From 'stock' (shares of a company, itself from the old word for a trading capital or 'stock' of goods) plus 'broker,' which traces back through French to the Old French 'brocour,' a wine-tapper or small trader — someone who literally broached (opened) casks to sell their contents piecemeal. Over centuries 'broker' drifted from cask-tapping to deal-making, and by the 1700s, as formal stock exchanges took shape in London, 'stockbroker' emerged as the name for the go-between who tapped not barrels but capital.