Anytime a stock has an increase in share price of 10% and a range during the day of a few points, undoubtedly day traders are involved. Thats the discipline. That's how they make their money.
However, news like this also gets momo players involved.
These forces create volatility. Longer term traders and holders benefit as we get to pick up shares on dips. I bought (not that anyone is interested) another 20k shares today and view these prices as the bottom on the slope up. This news is meaningful. Very meaningful. Just IMO.