I hesitate to post this but I'm going to include a link, a chart. https://finviz.com/quote.ashx?t=ENTA&p=d We've been in an uptrend and when I see a huge spike, or series of large spikes they are often followed by a selloff. How well I know that lesson. : (
Maybe Enta will go up, and up. BUT particularly if this is just a large day or a series of large days anyone just (or pondering) getting in should realize that someone is going to take profits. IE, runups are often precursors to selloffs.