Stock price when the opinion was issued
Great that the viewer is starting her son out early. Years of compounding growth is the best thing that any investor can do.
For anything that's related to just the S&P 500, you really need to know what you're buying. Make sure you diversify beyond the top 10 S&P names. Perhaps VGG, where you still get exposure to tech but more dividend appreciation. Another approach is to look at ETFS that focus on quality, such as QUAL or ZUQ among other names. These two screen for strong ROEs and low leverage.
Right now, he doesn't own any S&P 500 ETFs. He'd prefer an ETF with a quality factor that looks at quality names, such as QUAL. Streamlines some of the names, and you get away from the more expensive S&P 500 names.