"The  Relative Strength Index ( RSI) is a  technical indicator used in the analysis of  financial markets. It is intended to chart the current and historical strength or weakness of a stock or market based on the closing prices of a recent trading period. The indicator should not be confused with relative strength.

The RSI is classified as a momentum  oscillator, measuring the velocity and magnitude of directional price movements.  Momentum is the rate of the rise or fall in price. The RSI computes momentum as the ratio of higher closes to lower closes: stocks which have had more or stronger positive changes have a higher RSI than stocks which have had more or stronger negative changes."

So what that loosely means is that the momentum or change in slope of the price at the moment is reaching statistically significant outlier points. It suggests that the change in price of the stock is too sudden to be sustainable. You can see this in the price change as the stock has moved by nearly 13% in several weeks.

It sounds to me like you are trying to rationalize holding on to it in the hopes of more profit why not just go ahead and take some now as 13% is nothing to sneeze at, and that way you won't be kicking yourself if it reverses.