How to execute a click() on this web page tab?

How to execute a click() on this web page tab?

At first a (german) sample web page:

https://www.wikifolio.com/de/de/w/wf0futecus

In the middle of the web page you will find four "tabs":

- Handelsidee
- Portfolio
- Analyse
- Trades

By default the first tab "Handelsidee" is enabled.

Now I want to apply (in a Greasemonkey script) a jQuery statement which automatically clicks on the tab "Portfolio" when the web page is loaded.

How can I achieve this?

The following does NOT work:

$('.js-tab__link.c-wfdetail__tab-link.gtm-portfolio-tab').click();

What else do I have to use?

Peter