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Proportional navigation (also known as PN or Pro-Nav) is a guidance law (analogous to proportional control) used in some form or another by most homing air target missiles. [1] It is based on the fact that two vehicles are on a collision course when their direct line-of-sight does not change direction as the range closes. PN dictates that the ...
The direct alpha formula is derived from the definition of in Modern portfolio theory. We define r {\displaystyle r} , the rate of return, as the sum of a market return plus an alpha : r ( t ) = b ( t ) + α {\displaystyle r(t)=b(t)+\alpha }
In this formula P is the risky portfolio, F is riskless portfolio, and C is a combination of portfolios P and F. The slope of the capital allocation line is equal to the incremental return of the portfolio to the incremental increase of risk.
The net asset value formula is calculated by adding up what a fund owns and subtracting what it owes. For example, if a fund holds investments valued at $100 million and has liabilities of $10 ...
The time-weighted return is a measure of the historical performance of an investment portfolio which compensates for external flows.External flows refer to the net movements of value into or out of a portfolio, stemming from transfers of cash, securities, or other financial instruments.
The 5% Value at Risk of a hypothetical profit-and-loss probability density function. Value at risk (VaR) is a measure of the risk of loss of investment/capital.It estimates how much a set of investments might lose (with a given probability), given normal market conditions, in a set time period such as a day.
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Under the assumption of normality of returns, an active risk of x per cent would mean that approximately 2/3 of the portfolio's active returns (one standard deviation from the mean) can be expected to fall between +x and -x per cent of the mean excess return and about 95% of the portfolio's active returns (two standard deviations from the mean) can be expected to fall between +2x and -2x per ...