As a follow-up to the suggestion to use limit orders vs. market orders if trading RDUS or any thinly traded stock. Example: RDUS at 28.80 x 28.88 right now (bid 28.80, ask 28.88). I’ll usually split the difference by about 2/3rds, placing my limit order closer to the ask price if I’m looking to buy, especially if the stock is rising such as RDUS is so far today since the breakout. As such, I might place my order at 2.85 or 2.86 in this example.
One other option for those that use Interactive Brokers, is their adaptive IBALGO order entry. This is essentially a market order but they use some type of algorithm to fill the order at the best price. The benefit of this order type over a limit order when trying to buy a fast moving stock after a breakout is that you don’t have to keep modifying your limit order if the stock is climbing & it wasn’t filled. With the IB adaptive orders, you can even set the priority for the order as normal, urgent or patient. I’ve found that normal usually works well but urgent is best on a very fast moving stock following an impulsive breakout.