Finance

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Main article portfolio (finance)

In finance, a portfolio is a collection of investments held by an institution or a private individual. Holding but not always a portfolio is part of an investment and risk-limiting strategy called diversification. By owning several assets, certain types of risk (in particular specific risk) can be reduced.

Management and marketing

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In strategic management and marketing, a portfolio is a collection of products, services, or brands that are offered for sale by a company. In building up a product portfolio a company can use various analytical techniques including B.C.G. Analysis, contribution margin analysis, G.E. Multi Factoral analysis,and Quality Function Deployment. Typically a company tries to achieve both diversification and balance in their portfolio of product offerings.

Many portfolio optimization algorithms are based on MPT or Modern Portfolio Theory. The most commonly used method is Mean-Variance optimization where portfolio allocations aim at maximizing the profit while constraining the risk.

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