Is this the right time to invest in US stocks? You’re reading a free article with opinions that may differ from The Motley Fool’s Premium Investing Services. Become a Motley Fool member today to get instant access to our top analyst recommendations, in-depth research, investing resources , and more. Learn More The BetaShares NASDAQ 100 ETF (ASX: NDQ) has been one of the most exciting exchange-traded funds (ETFs) to own over the last few years. The last few months have thrown up a lot of volatility for the US stock market, so this is a good time to consider whether…