Incorrect historical data for BCVN
All historical data on BCVN (listed on Six Swiss Exchange) should have been adjusted following a 10-for-1 stock split on May 28th, 2020. Only a small part was adjusted making charts totally misleading. Thanks
Mi Po commented
Problem is for many other stocks e.g. most popular:
Missing many rows in Historical data section since Feb 21, 2020 to today all cells of table are empty (no values)
Yahoo finance is now not usable, missing many data, charts are incorrect!
See broken chart (straight line) here: https://i.ibb.co/yW7rwYs/broken-chart.png