This online pet supply retailer is suddenly giving investors much to think about. With its stock up 30% since the company reported its fiscal first-quarter results late last week, the idea of stepping into a new stake in Chewy (CHWY 5.53%) right now could be a little intimidating. That's a big gain in a short period of time, inviting profit taking from the stock's now-loftier levels. If Chewy was on your watch list of potential purchases prior to this jump, however, know that it's not too late to dive in. I ...