Research Built on Our Own Data

Each research piece asks one question and answers it with data we collect ourselves, stating the method, the period and the limits. Research complements the tools: a tool calculates on demand, while a research piece works through one question in depth. The weekly market barometer sums up the past trading week.

All Research

• Nov 12, 2026Wealth€57.50 is what €100 from August 1999 buys in August 2026 Paper Money and Inflation: What €100 From 1999 Is Worth Today Loss of purchasing power is real, and it adds up. The story of a night-time robbery in August 1971 only half survives a closer look.
• Nov 12, 2026Wealth€3,059 to €14,582 interest on €50,000 over ten years, depending on the year the loan began (2021 or 2003) How Banks Create Money: What Really Happens With a Loan Banks do not lend out other customers' money; they create it when they grant a loan. That makes it neither a fraud nor a system in which debts can never be repaid.
• Jul 21, 2026Collectibles×5.4 for the same cards, matched-model index, Mar 2022 — Aug 2026 Is the Pokémon Card Market in a Bubble? 4,159 Sales Analyzed Prices for PSA-graded cards multiplied. Measured on the same cards they rose 438%, while the raw median shows 786% because pricier cards came up for sale later.
• May 19, 2026Crypto45.6% Bitcoin’s annualized volatility, Jul 2024 — Sep 2026 Bitcoin in Investment Portfolios: The Real Numbers Bitcoin is calmer than it was and still about three times as volatile as the stock market. It moves with stocks, not with gold.
• Mar 17, 2026Wealth€1.2m needed for €3,000 a month indefinitely at a 3% real return Living Off Your Returns: What It Really Takes The capital you need is arithmetic. The return you assume is a guess, and it can triple the answer.
• Jan 13, 2026ETFs73.0% United States share of the MSCI World US Weight in the MSCI World: What Does It Really Mean for Investors? Holding 1,248 companies sounds diversified. Measured by weight, the MSCI World behaves like 85 of them.
• Oct 14, 2025Trading+227.8% the market itself, 2017–2026, no trading Why Most Traders Lose Money: What the Data Shows The market paid 13.5% a year. Five measurable forces decide how much of that a trader keeps, and at ordinary trading frequencies it is very little.

Updated Nov 12, 2026 · Content and figures checked Oct 19, 2026