Blog (archive)

We show why rich and super-rich families often become poor again within one to three generations.

In this blog post we show how well the four precious metals gold, silver, platinum and palladium can be added to a stock portfolio.

In this blog post, we explore why prediction-based investing is practiced even though it works poorly.

In this blog post we answer the question of whether stock prices can “rise forever”.

In this blog post we calculate whether buying an owner-occupied property or renting it has been more profitable over the last 55 years.

Hidden fees, questionable products and lots of conflicts of interest - the business model of the savings banks.

In this article we show how art brokers distort the returns on art upwards and the risk downwards.

This article is about the decline in prices on the stock markets since the beginning of 2025 and how investors should deal with it.

Financial journalists and finfluencers often claim that investing is essentially easy. We show why this is nonsense.

In this post, we analyze the buy the dip investment strategy using historical numbers.

In this blog post we show that the credit leverage effect in the real estate industry is often presented in a manipulatively positive manner for marketing reasons.

In this article we show that and why you cannot build long-term wealth with interest-bearing bank deposits.

In this article we analyze the importance of the short life expectancy of companies for private investors.

In this article we analyze the question of whether and how artificial intelligence will change the world of investing.

In this post, we address the claim that Nasdaq 100 ETFs are particularly good investments.

In this article we present an alternative rebalancing method for passive investors.

This article is a brief introduction to the bond asset class (government and corporate bonds) from the perspective of private investors.

In this article, we'll show you why it's unwise to buy or hold stocks that are heavily shorted by hedge funds.

In this article we explain the benefits of money market funds as an alternative to overnight money.

What does Dr.'s world portfolio concept actually mean? Gerd Kommer and what does a global portfolio actually look like?

In this article we describe the structure and objectives of the L&G Gerd Kommer Multifactor Equity UCITS ETF.

This article will show that the well-known thesis “inflation is good for borrowers” ​​is not true.

In this article we show why emerging market stocks are still worthwhile investments despite weak returns in recent years.

In this article, we address the question of which specific forms of “economic knowledge” actually help with investing and which do not.

We show that the market share of passive investing or indexing is often overstated.

From a rational point of view, we deal with the crucial question of retirement provision: Buy or rent?

We show that the stock market crash beginning in 1929 was less severe than often assumed.

This blog post is a brief introduction to passive investing with index funds and ETFs.

In this blog post we address the controversial topic of downside hedging of stock portfolios.

We use specific ETFs to show how interest rate increases affect the bonds asset class.

In this blog post we look at the contradictory investment goal of “avoiding capital consumption”.

How should private investors with a passive investment approach react to the war in Ukraine?

Open real estate funds are considered investments with solid returns and little risk. But appearances are deceiving. We show why.

In this article we look at the benefits, methods and principles of rebalancing.

We address the “tax present value effect of buy-and-hold.” It can be used to achieve a surprisingly high tax advantage in the long term.

We look at the performance of the famous US hedge fund Medallion, managed by James Simons.

In this article we look at four well-known German prophets of doom and their investment recommendations.

We consider arguments for and against adding an asset price component to consumer goods inflation.

In this article we show that the return-risk combination of private equity has been disappointing over the last 30 years.

In this article we show that Ray Dalio's hedge fund has been underperforming a simple passive ETF benchmark for 16 years.

Are raw materials suitable as an addition to a passive portfolio? We discuss this using historical data and factual arguments.

The representations and assessments in the financial media regarding securities lending for ETFs often contain serious errors.

Do technology stocks consistently provide higher returns than the overall stock market? In this article we show that this is not the case.

We highlight ten particularly serious investor mistakes and focus on those that are not “well-known”.

Should you invest a large sum of money in the stock market all at once or is it better to enter in several tranches over a longer period of time?

Using Apple shares, one of the most profitable stocks in the world, we show how extremely risky individual investments are, even in “superstar stocks”.

In this article we look at the action-oriented implications that the current Corona crash has for private investors.

In this article we look at cash-value life insurance, its disadvantages and the reasons for its enormous popularity.

In this article we look at the harmful effects of negative interest rate differentials.

In this article we look at the connection between interest rate changes and the price of bonds.

In this article we examine the question of whether rental properties are an attractive investment for small private landlords in terms of returns and risks.

In this article we look at the unpleasant effects of “performance fees” at banks, asset managers and actively managed investment funds.

In this article we look at the return-risk profile of the previously little-researched asset class of emerging market government bonds.

We show what options there are for implementing factor premiums in multifactor investing in an investor portfolio and which solution we prefer.

We look at the alleged advantages of "tangible assets" over non-tangible assets and show that these advantages are largely based on misunderstandings.

We are testing a market timing strategy that should make it possible to enter the stock market at cheaper prices.

The concept of the “cash flow cascade” helps to understand perhaps the most fundamental driver of risk in the asset classes of stocks, bonds and real estate.

“Sovereign ceiling” states that corporate bonds must have a worse credit rating than bonds from their “home country”.

The topic is the challenges and misconceptions regarding the long-term historical returns of the residential real estate asset class.

Most private investors are better off investing in stocks with funds than with investments in individual stocks.

As is often the case, the data shows that current stock market valuations are less dramatic than portrayed.

In this article we show how questionable the concepts surrounding the topic of “financial freedom” are.

At the end of 2017, Warren Buffett won a bet against hedge fund expert Ted Seides in which an index fund significantly beat a hedge fund portfolio.

Dividend stocks do not represent a systematically attractive risk-return combination, either theoretically or empirically.

We show which distribution mode (distributing or accumulating) best suits which investor.

We hear more and more often about the dangers of the growing index fund market share. We took a closer look at this market share and its implications.