Ein Kursverlauf einer Aktie oder eines Fonds mit einer Folge von rentabel eingeschätzten Kursveränderungen beinhaltet selbst dann ein vergleichsweise hohes Risiko, wenn die Wahrscheinlichkeit der zu erwartenden positiven Kursveränderungen unter einem bestimmbaren kritischen Wert liegt....

Die in den Medien zu findenden Angebote über Bonuszertifikate geben häufig unzureichende oder irreführende Informationen über Rentabilität und Risiko solcher Investments wider. Ein sinnvoller Vergleich der Renditen mehrerer Angebote ist außerdem erschwert oder in vielen Fällen überhaupt...

The German version of this paper can be found at http://ssrn.com/abstract=2043039The paper shows the fundamentals of social security funds as important criteria for the cost apportionment of contributions paid by employees and manual workers and of contributions paid by the government for...

The possibility to minimize volatility of the systematic risk while maximizing returns, is the use of an optimized buy long/sell short strategy that takes into account, that the market model is kinky. The equation of the market model – including a beta plus for increasing markets and a beta...

The paper shows the fundamentals of social security funds and discusses possible solutions of it's long-term financing. For avoiding negative impact on economic growth and the resources of financing, contributions for the insurance fund should be taken as premiums on salaries and wages....

The results of an econometric model show that the increase of one percent of the social security contribution leads approximately to an increase of unemployment of about 100,000. The plan to rise the contributions for the health insurance fund for future therefore should be abandoned. This is...

The possibility to minimize volatility, while maximizing returns, is the use of an optimized buy long/sell short strategy that takes into account, that the market model is kinky. The equation of the market model - extendet by a parameter gamma - seems to be more qualified for this reason. An...

The approach shows the scientific background of eliminating the market risk of an optimized portfolio and the use of marginal probabilities of ruin for optimized amounts of investments.For this reason the mathematical expectations of the parameters of the market model in the portfolio result to...