With more than 2,000 ETFs or exchange-traded funds available in the U.S. alone, choosing the right ETF might seem like trying to pick out the best coffee at the grocery store.

During Refinitiv Lipper’s fund-flows week ended November 3, 2021, investors were overall net purchasers of fund assets (including both conventional funds and ETFs) for the third week in a row, adding $991 million.