The Music of the Market

Mr. Frost and his team work out of a small, beige corner office with arched windows that used to be a library. There, at about 10:15 most workday mornings, one of them pushes a button on a computer. Across Wall Street, three musical notes – an F, an E and a D – sound on trading terminals, alerting traders that the Fed is in the market.

From the NYTimes.

Hat tip Daniel Lippman.