Momentum stocks have suffered a fair degree of turbulence since April, after a strong first quarter. Investors unfortunately have to endure periods like this, when the market appears hesitant or lacks direction, in much the same the same way as travelers can expect turbulence during an air flight. It is important is to resist the urge to avoid discomfort by exiting positions. Enduring uncomfortable parts of the journey are necessary if you want to reach your intended destination. Our research on both the ASX and S&P 500 has shown that attempting to time secondary movements in the markets does not enhance but erodes performance: the average (re-)entry price is higher than the average exit price after accounting for brokerage.
A basic rule of thumb in investing is that investors need to endure higher volatility in order to achieve higher returns. If your investment time frame is long-term, it is important to focus on the end result and not be overly concerned by weekly fluctuations.