RE:Waiting will cut your profit ! That's what stock alerts are for. The only way you'll miss out is if it's a one trick pony like last news release on Samsung with no other info, but if it's the real deal...yes you'll miss a few cents but it is never too late to get into a stock that is truly worth while owning.
Don't worry about others here telling you "your're going to miss out if you aren't in already".....it's hog wash if they believe the stock is worth owning long term and not just for a couple of days.