Quantumscape - Example of a Stock Bubble?

Has the Quantumscape bubble burst?
https://finance.yahoo.com/news/quantumscape-plummets-investors-shrug-off-160444797.html
 
Related:
https://www.barrons.com/articles/we-found-a-bubblebut-it-may-not-be-what-you-think-it-is-51609457640