Columbia subject headings:
Information storage and retrieval systems--Securities.
Information technology--United States.
Securities industry--United States--Data processing.
Securities industry--United States.
Securities--United States.
Stock exchanges--United States--Data processing.
Stock exchanges--United States.
Harvard subject headings:
Information storage and retrieval systems--Securities
Information technology--United States
Securities industry--United States.
Securities--United States
Stock exchanges--United States
Princeton subject headings:
Information storage and retrieval systems--Securities.
Information technology--United States.
Securities industry--United States.
Securities--United States.
Stock exchanges--United States.