Stock price when the opinion was issued
Vanguard is a premier ETF provider. The pricing is right around 13 basis points. It's the total U.S. index (including big tech like Amazon, Microsoft and Google) which is free-float market capitalization where blocks are held by insiders, which is a good sign. However, to create the capacity for these ETFs to accept a lot of capital the index calculations used these free-flow capitalizations, which under-represents companies with large insider holdings.
With VUN, you get pretty much the entire US market; not too expensive at 16 bps. Keep in mind that the USD version, VTI, has a MER of 3 bps; be mindful, too, of foreign currency and US estate issues.
Over 3700 positions, market-cap weighted. Top 10 names represent about 20% of the portfolio. Lots of exposure to the tech space. Not all that different from the S&P 500.
Structured nicely, low cost. Total market includes not just the top 500, but also the Russell 1000 of smaller stocks. He'd prefer it over the S&P 500. He doesn't like the crowded trades, such as Microsoft. He wants to avoid market cap at this point in the cycle.