True to some, but to others it was a big deal that TSOI cancelled their reverse split. It was a strong psychological effect that was placed on the stock because of simply doing a reverse split to some. Based on the cancellation, the market reacted.
TSOI is a very solid fully reporting SEC filing company that I think more will now remove the blinders and put more eyes on it to learn of their Immunotherapy/Stem Cell patents and products to help fight cancer, pregnancy complications, and a variety of other things: