Retail Industry ETF
  
See: Exchange-Traded Fund (ETF).
What's in this ETF? Eh, stuff like Macy's and Limited Brands and Tapestry and Best Buy and maybe a few others of similar ilk.
The elephant in the room? Yeah, AMZN. Is it in the ETF or not? And the interesting thing about including AMZN is that its market cap is larger than the combined values of more or less all other retailers combined, except Walmart. If you're gonna buy one of these things, better inspect what's in it first, or it becomes a kind of slow dragging proxy for AMZN, as life is gradually sucked out of pretty much everyone else who owns physical assets.