CAPITAL SURPLUS is an archaic term. See PREMIUM ON CAPITAL STOCK.
BROKER-DEALER is any person or institution, other than a bank, engaged in the business of buying or selling securities on its own behalf or for others.
YIELD CURVE, in investments, is a graph depicting the change in yield as it relates to the time to maturity of a fixed income security. A parallel yield curve shift refers to a change in interest rates that is the same at every maturity point along the yield curve, e.g., when short-term rates rise 100 basis points, intermediate and long-term rates also rise 100 basis points.
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