SHARPE RATIO, named after William P. Sharpe, is a measurement of portfolio trading performance. It is calculated by subtracting risk free rate from total portfolio return, then dividing by the standard deviation of the portfolio:Sharpe ratio = Total portfolio return - Risk free rate / Portfolio standard deviation.

COST IMPLOSION is a cost rollup using the quantities and costs of low-level items through a where used chain to determine total cost of the finished item. See COST ROLLUP.

INTERNAL CONTROLS include policies and procedures that (a) pertain to the maintenance of accurate and reasonably detailed records, (b) provide reasonable assurance that transactions are properly recorded and authorized, and (c) safeguard assets.

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