# Portfolio theories

- Canonical URL: https://www.gerhardmerk.de/portfolio-theories
- Post ID: 592256
- Modified: 2023-07-25T21:12:54+00:00
- Language: en

## Definition

Theories about the best possible financial investment in general and about investment management in particular. - In textbooks, these theories are sometimes presented in a highly mathematical form, but always under certain assumptions and/or to the exclusion of important circumstances that are decisive for the investment, such as - the supervisory issue, - the very important tax aspect when setting up a portfolio, or - the foreign exchange regulations with regard to foreign investments. - See investment model, behavioral finance, financial market stress, financial theory, model uncertainty, phantom risks, portfolio, optimal, portfolio alignment, price change, concurrent, risk, systematic. Attention: The financial encyclopedia is protected by copyright and may only be used for private purposes without express consent! University Professor Dr. Gerhard Merk, Dipl.rer.pol., Dipl.rer.oec. Professor Dr. Eckehard Krah, Dipl.rer.pol. E-mail address: info@ekrah.com https://de.wikipedia.org/wiki/Gerhard_Ernst_Merk https://www.jung-stilling-gesellschaft.de/merk/ https://www.gerhardmerk.de/

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