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Meaning / Definition of

Efficient Surface

Categories: Technical Analysis, Investing and Trading,

Three-dimensional diagram used as a visual aid for understanding the interactions between multiple risks and the accompanying returns in order to construct efficient investment portfolios. To draw this diagram, three variables (expected return, standard deviation, and tracking error) associated with the different asset-allocation choices or portfolios are plotted along the three axes of a graph. The resulting shape (a distorted solid or plane) depicts the interplay of different scenarios, and shows the expected returns in relation to volatility (standard deviation) and time (tracking error). It is an improvement upon the efficient frontier method, which is a two-dimensional risk-reward graph that shows expected return and standard deviation without the effect of time. also called efficient plane, efficient surface frontier.

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Definition / Meaning of

Brokerage Firm

Categories: Brokerages,

brokerage firms, also known as broker-dealers, are licensed by the securities and exchange commission (SEC) to buy and sell securities for clients and for their own accounts. When a brokerage firm sells securities it owns, it is said to be acting as a principal in that transaction.Firms frequently maintain research departments for their own and their clients' benefit. They may also provide a range of financial products and services, including financial planning, asset management, and educational programs.brokerage firms come in all sizes, from one- or two-person offices to huge firms with offices around the world. They are sometimes differentialed as full-service or discount firms, based on pricing structure and client relationships.Some brokerage firms exist entirely online, and nearly all firms offer you the option of placing orders electronically rather than over the telephone. In most cases, trading electronically is substantially less expensive than giving buy and sell orders by phone.

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