Answer the following questions about one of the following ETFs:

Global X Cloud Computing ETF Global X Cloud Computing ETF (CLOU)

Procure Space ETF (UFO)

1. Compare the bid and ask between the SPY ETF and the ETF you chose. What does this indicate about the liquidity of the fund?
2. Compare the expense ratios of SPY and the ETF you chose. What can the difference in the expense ratio teach about the fund and its managers?

Can you come up with any ideas for ETFs that track securities based on different external factors (such as space, cloud computing, etc.)?