Technically speaking reaching historical lows carries with it very bearish implications and there is no telling when the stock will form a base to rebound.
If you check the news, Goldman Sachs has exited their position on STEMLFE and that's probably what sparked investors concern about the business's outlook. Not sure about its fundamental numbers though.
If you own the stock, then probably should check back your rationale of owning the stock and see if it still holds water. If it does, then maybe you might wanna consider adding more when the stock starts to show signs of bottoming. If it does not, then maybe you should consider putting your hard earned money somewhere else.
If you don't own the stock, it's probably not the best time to buy.
