Which etfs are best to invest in?

Invesco GARP S%26P 500 ETF · S%26P 500 · Consumer Staples Select. First Trust NASDAQ Clean Edge Green Energy Index. The first obvious ETF to buy when the market collapses is the Vanguard S%26P 500 ETF (VOO -0.73%). This ETF tries to closely reflect the daily movements of the S%26P 500 benchmark index.

With the notable exception of the full-portfolio Invesco Balanced Multi-Asset Allocation (PSMB) ETF, all of the funds on our list can help complete an existing fund portfolio.