Privacy policy

Last updated: October 2026

1. Data controller

Kai Marek

Stolberger Str. 26, 52068 Aachen, Germany

2. Principles

This website uses no cookies, tracking or analytics tools. No personal data is collected or shared for advertising purposes.

3. Hosting and server logs

When you visit this website, the hosting provider processes technically necessary connection data (IP address, date and time, requested file and browser type). This processing is necessary to operate and secure the website (Article 6(1)(f) GDPR). The data is not analysed or shared with third parties.

4. Local browser storage (watchlist)

When you save funds to your watchlist, your selection is stored only in your browser (localStorage). This data does not leave your device and is not transmitted to any server. You can delete it at any time through your browser settings.

5. Fonts (Google Fonts)

This website loads Google Fonts to display its typefaces. Your browser connects to Google’s servers, transmitting your IP address. The legal basis is the legitimate interest of the website operator in a consistent presentation (Article 6(1)(f) GDPR).

6. External links and Substack

This website links to external services, including Substack (Substack Inc., USA) and press articles about individual funds. If you follow these links, the respective providers’ privacy policies apply. Those providers are solely responsible for processing your data on their websites.

7. Your rights

You have the right to access, rectify and erase your personal data, restrict its processing, request data portability and object to processing (Articles 15–21 GDPR). You also have the right to lodge a complaint with a data protection supervisory authority, such as the state data protection authority responsible for your place of residence in Germany.

8. Privacy enquiries

If you have questions about the processing of your data, please write to the email address above.