How to report missing or incorrect data on

I noticed a split event is missing for TSLA on

What data source uses ? And how/where to report data issues ?

Like this.

Please look at Historische Kurse von Portfolio Report - #365 by FlorianAlexander and following.

It seems that portfolio-report offers only unadjusted quotes.

As mentioned already, Portfolio Reports intentionally provides the real, unadjusted quotes.

Data about events such as stock splits is not available consistently (because it isn’t used by Portfolio Performance). Tesla is one of the few stocks that contain events for testing purposes. Stock split data for Tesla is up-to-date now.