Yes, they're very reliable as long as they have good volume. Stay away from "dead" ETFs with volume below 500k daily volume or so unless you're sure it is a good ETF nonetheless. If you buy an ETF with higher gearing but low volume, you may find it harder to exit your position well, than if you buy an ETF with slightly lower gearing but higher volume.
Yes, they're very reliable as long as they have good volume. Stay away from "dead" ETFs with volume below 500k daily volume or so unless you're sure it is a good ETF nonetheless. If you buy an ETF with higher gearing but low volume, you may find it harder to exit your position well, than if you buy an ETF with slightly lower gearing but higher volume.
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