WSJ: What to Do When Your ETF Shuts Down

By SIMON CONSTABLE

The exchange-traded-fund industry is quickly becoming a dog-eat-dog world.

While ETFs have enjoyed explosive growth over the past decade, a record number of them—127—closed up shop last year, and liquidations are showing no sign of slowing.

Here is a look at what is fueling the closure trend and what happens to investors when the plug gets pulled on an ETF.