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Mean-variance efficient portfolio

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Definition of Mean-variance efficient portfolio

Mean-variance Efficient Portfolio Image 1

Mean-variance efficient portfolio

Related: Markowitz efficient portfolio



Related Terms:

Active portfolio strategy

A strategy that uses available information and forecasting techniques to seek a
better performance than a portfolio that is simply diversified broadly. Related: passive portfolio strategy


Arithmetic average (mean) rate of return

Arithmetic mean return.


Arithmetic mean return

An average of the subperiod returns, calculated by summing the subperiod returns
and dividing by he number of subperiods.


Beta coefficient

A measurement of the extent to which the returns on a given stock move with stock market.


budget variance

the difference between total actual overhead
and budgeted overhead based on standard hours allowed
for the production achieved during the period; computed
as part of two-variance overhead analysis; also
referred to as the controllable variance



coefficient of correlation

a measure of dispersion that indicates the degree of relative association existing between two variables


Coefficient of determination

A measure of the goodness of fit of the relationship between the dependent and
independent variables in a regression analysis; for instance, the percentage of variation in the return of an
asset explained by the market portfolio return.


Mean-variance Efficient Portfolio Image 2

coefficient of determination

a measure of dispersion that
indicates the “goodness of fit” of the actual observations
to the least squares regression line; indicates what proportion
of the total variation in y is explained by the regression model


coefficient of variation

a measure of risk used when the standard deviations for multiple projects are approximately
the same but the expected values are significantly different


Complete portfolio

The entire portfolio, including risky and risk-free assets.


controllable variance

the budget variance of the two variance approach to analyzing overhead variances


Correlation coefficient

A standardized statistical measure of the dependence of two random variables,
defined as the covariance divided by the standard deviations of two variables.


Correlation Coefficient

A measure of the tendency of two variables to change values
together


Correlation coefficient

A statistic in which the covariance is scaled to a
value between minus one (perfect negative correlation) and plus one (perfect
positive correlation).


Covariance

A statistical measure of the degree to which random variables move together.


Covariance

A measure of the degree to which returns on two assets move in
tandem. A positive covariance means that asset returns move together; a
negative covariance means they vary inversely.


Mean-variance Efficient Portfolio Image 3

Dedicating a portfolio

Related: cash flow matching.


Direct materials mix variance

The variance between the budgeted and actual mixes of
direct materials costs, both using the actual total quantity used. This variance isolates
the unit cost of each item, excluding all other variables.



Efficient capital market

A market in which new information is very quickly reflected accurately in share
prices.


efficient capital markets

Financial markets in which security prices rapidly reflect all relevant information about asset values.


Efficient diversification

The organizing principle of modern portfolio theory, which maintains that any riskaverse
investor will search for the highest expected return for any level of portfolio risk.


Efficient frontier

The combinations of securities portfolios that maximize expected return for any level of
expected risk, or that minimizes expected risk for any level of expected return.


Efficient frontier

A graph representing a set of portfolios that maximizes
expected return at each level of portfolio risk. See Markowitz model.


Efficient Market Hypothesis

In general the hypothesis states that all relevant information is fully and
immediately reflected in a security's market price thereby assuming that an investor will obtain an equilibrium
rate of return. In other words, an investor should not expect to earn an abnormal return (above the market
return) through either technical analysis or fundamental analysis. Three forms of efficient market hypothesis
exist: weak form (stock prices reflect all information of past prices), semi-strong form (stock prices reflect all
publicly available information) and strong form (stock prices reflect all relevant information including insider
information).


Efficient Markets Hypothesis

The hypothesis that securities are typically in equilibrium--that they are fairly priced in the sense that the price reflects all publicly available information on the security.


Efficient portfolio

A portfolio that provides the greatest expected return for a given level of risk (i.e. standard
deviation), or equivalently, the lowest risk for a given expected return.
efficient set Graph representing a set of portfolios that maximize expected return at each level of portfolio
risk.


Excess return on the market portfolio

The difference between the return on the market portfolio and the
riskless rate.


Factor portfolio

A well-diversified portfolio constructed to have a beta of 1.0 on one factor and a beta of
zero on any other factors.



Feasible portfolio

A portfolio that an investor can construct given the assets available.


Feasible set of portfolios

The collection of all feasible portfolios.


fixed overhead spending variance

the difference between the total actual fixed overhead and budgeted fixed overhead;
it is computed as part of the four-variance overhead analysis


fixed overhead volume variance

see volume variance


Geometric mean return

Also called the time weighted rate of return, a measure of the compounded rate of
growth of the initial portfolio market value during the evaluation period, assuming that all cash distributions
are reinvested in the portfolio. It is computed by taking the geometric average of the portfolio subperiod
returns.


Hedged portfolio

A portfolio consisting of the long position in the stock and the short position in the call
option, so as to be riskless and produce a return that equals the risk-free interest rate.


Index Portfolio Rebalancing Service (IPRS)

Index portfolio Rebalancing Service (IPRS) is a comprehensive investment service that can help increase potential returns while reducing volatility. Several portfolios are available, each with its own strategic balance of Index Funds. IPRS maintains your personal asset allocation by monitoring and rebalancing your portfolio semi-annually.


Information Coefficient (IC)

The correlation between predicted and actual stock returns, sometimes used to
measure the value of a financial analyst. An IC of 1.0 indicates a perfect linear relationship between predicted
and actual returns, while an IC of 0.0 indicates no linear relationship.


input-output coefficient

a number (prefaced as a multiplier
to an unknown variable) that indicates the rate at which each
decision variable uses up (or depletes) the scarce resource


Internally efficient market

Operationally efficient market.


labor efficiency variance

the number of hours actually worked minus the standard hours allowed for the production
achieved multiplied by the standard rate to establish
a value for efficiency (favorable) or inefficiency (unfavorable)
of the work force


Labor efficiency variance

The difference between the amount of time that was budgeted
to be used by the direct labor staff and the amount actually used, multiplied
by the standard labor rate per hour.


labor mix variance

(actual mix X actual hours X standard rate) - (standard mix X actual hours X standard rate);
it presents the financial effect associated with changing the
proportionate amount of higher or lower paid workers in production


labor rate variance

the actual rate (or actual weighted average rate) paid to labor for the period minus the standard rate multiplied by all hours actually worked during the period;
it is actual labor cost minus (actual hours X standard rate)


Labor rate variance

The difference between the actual and standard direct labor rates
actually paid to the direct labor staff, multiplied by the number of actual hours
worked.


labor yield variance

(standard mix X actual hours X standard rate) - (standard mix X standard hours X standard rate);
it shows the monetary impact of using more or fewer total hours than the standard allowed


Leveraged portfolio

A portfolio that includes risky assets purchased with funds borrowed.


Leveraged portfolio

A portfolio that includes risky assets purchased with funds borrowed.


Market portfolio

A portfolio consisting of all assets available to investors, with each asset held -in
proportion to its market value relative to the total market value of all assets.


market portfolio

portfolio of all assets in the economy. In practice a broad stock market index, such as the Standard & Poor's Composite, is used to represent the market.


Market Portfolio

The total of all investment opportunities available to the investor.


Markowitz efficient frontier

The graphical depiction of the Markowitz efficient set of portfolios
representing the boundary of the set of feasible portfolios that have the maximum return for a given level of
risk. Any portfolios above the frontier cannot be achieved. Any below the frontier are dominated by
Markowitz efficient portfolios.


Markowitz efficient portfolio

Also called a mean-variance efficient portfolio, a portfolio that has the highest
expected return at a given level of risk.


Markowitz efficient set of portfolios

The collection of all efficient portfolios, graphically referred to as the
Markowitz efficient frontier.


material mix variance

(actual mix X actual quantity X standard price) - (standard mix X actual quantity X standardprice);
it computes the monetary effect of substituting a nonstandard mix of material


material price variance

total actual cost of material purchased
minus (actual quantity of material  standard
price); it is the amount of money spent below (favorable)
or in excess (unfavorable) of the standard price for the
quantity of materials purchased; it can be calculated based
on the actual quantity of material purchased or the actual
quantity used


material quantity variance

(actual quantity X standard price) - (standard quantity allowed  standard price);
the standard cost saved (favorable) or expended (unfavorable)
due to the difference between the actual quantity
of material used and the standard quantity of material
allowed for the goods produced during the period


material yield variance

(standard mix X actual quantity X standard price) - (standard mix X standard quantity X standard price);
it computes the difference between the
actual total quantity of input and the standard total quantity
allowed based on output and uses standard mix and
standard prices to determine variance


Materials price variance

The difference between the actual and budgeted cost to
acquire materials, multiplied by the total number of units purchased.


Materials quantity variance

The difference between the actual and budgeted quantities
of material used in the production process, multiplied by the standard cost per
unit.


Mean

The expected value of a random variable.


Mean

a. A number that typifies a set of numbers, such as a geometric mean
or an arithmetic mean.
b. The average value of a set of numbers.


Mean of the sample

The arithmetic average; that is, the sum of the observations divided by the number of
observations.


Mean-variance analysis

Evaluation of risky prospects based on the expected value and variance of possible outcomes.


Mean-variance criterion

The selection of portfolios based on the means and variances of their returns. The
choice of the higher expected return portfolio for a given level of variance or the lower variance portfolio for
a given expected return.


Minimum-variance frontier

Graph of the lowest possible portfolio variance that is attainable for a given
portfolio expected return.


Minimum-variance portfolio

The portfolio of risky assets with lowest variance.
Minority interest An outside ownership interest in a subsidiary that is consolidated with the parent for
financial reporting purposes.


Modern portfolio theory

Principles underlying the analysis and evaluation of rational portfolio choices
based on risk-return trade-offs and efficient diversification.


noncontrollable variance

the fixed overhead volume variance;
it is computed as part of the two-variance approach to overhead analysis


Normal portfolio

A customized benchmark that includes all the securities from which a manager normally
chooses, weighted as the manager would weight them in a portfolio.


Operationally efficient market

Also called an internally efficient market, one in which investors can obtain
transactions services that reflect the true costs associated with furnishing those services.


Optimal portfolio

An efficient portfolio most preferred by an investor because its risk/reward characteristics
approximate the investor's utility function. A portfolio that maximizes an investor's preferences with respect
to return and risk.


overhead efficiency variance

the difference between total budgeted overhead at actual hours and total budgeted
overhead at standard hours allowed for the production
achieved; it is computed as part of a three-variance analysis;
it is the same as variable overhead efficiency variance


overhead spending variance

the difference between total actual overhead and total budgeted overhead at actual
hours; it is computed as part of three-variance analysis; it
is equal to the sum of the variable and fixed overhead
spending variances


Passive portfolio

A market index portfolio.


Passive portfolio strategy

A strategy that involves minimal expectational input, and instead relies on
diversification to match the performance of some market index. A passive strategy assumes that the
marketplace will reflect all available information in the price paid for securities, and therefore, does not
attempt to find mispriced securities. Related: active portfolio strategy


Portfolio

A collection of investments, real and/or financial.


Portfolio

A collection of securities and investments held by an investor


Portfolio Diversification

See diversification


Portfolio insurance

A strategy using a leveraged portfolio in the underlying stock to create a synthetic put
option. The strategy's goal is to ensure that the value of the portfolio does not fall below a certain level.


Portfolio internal rate of return

The rate of return computed by first determining the cash flows for all the
bonds in the portfolio and then finding the interest rate that will make the present value of the cash flows
equal to the market value of the portfolio.


Portfolio management

Related: Investment management


Portfolio manager

Related: Investment manager


Portfolio opportunity set

The expected return/standard deviation pairs of all portfolios that can be
constructed from a given set of assets.


Portfolio separation theorem

An investor's choice of a risky investment portfolio is separate from his
attitude towards risk. Related:Fisher's separation theorem.


Portfolio turnover rate

For an investment company, an annualized rate found by dividing the lesser of
purchases and sales by the average of portfolio assets.


Portfolio variance

Weighted sum of the covariance and variances of the assets in a portfolio.


Portfolio Weight

The percentage of a total portfolio represented by a single specific
security. It is calculated by dividing the value of the investment in a
specific security by the value of the investment in the total portfolio.


Production yield variance

The difference between the actual and budgeted proportions
of product resulting from a production process, multiplied by the standard unit cost.


Regression toward the mean

The tendency for subsequent observations of a random variable to be closer to its mean.


Replicating portfolio

A portfolio constructed to match an index or benchmark.


Selling price variance

The difference between the actual and budgeted selling price for
a product, multiplied by the actual number of units sold.


Serial covariance

The covariance between a variable and the lagged value of the variable; the same as
autocovariance.


Structured portfolio strategy

A strategy in which a portfolio is designed to achieve the performance of some
predetermined liabilities that must be paid out in the future.


Tilted portfolio

An indexing strategy that is linked to active management through the emphasis of a
particular industry sector, selected performance factors such as earnings momentum, dividend yield, priceearnings
ratio, or selected economic factors such as interest rates and inflation.


total overhead variance

the difference between total actual overhead and total applied overhead; it is the amount of underapplied or overapplied overhead


total variance

the difference between total actual cost incurred
and total standard cost for the output produced during
the period


variable overhead efficiency variance

the difference between budgeted variable overhead based on actual input activity and variable overhead applied to production


variable overhead spending variance

the difference between total actual variable overhead and the budgeted amount of variable overhead based on actual input activity


Variance

A measure of dispersion of a set of data points around their mean value. The mathematical
expectation of the squared deviations from the mean. The square root of the variance is the standard deviation.


Variance

The weighted average of the squared deviations from the
expected value



 

 

 

 

 

 

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