Yeah, It happens like that but it's not that frequent. I have seen it happen a few times though, PNUT is one. I made a post on a forum about buying it some times after its listing funny enough I just saw my mail blowing up from notifications from the forum saying there was a massive pump, that what only when I check the chart and it was just a pleasant surprise. I didn't buy the moment it was listed but I wasn't too far off so I still made a pretty decent profit.