I'm leaving that part out, because it obfuscates things. In one interpretation "Authorized Participants" on the exchanges keep the number of available "coupons"/shares at a fixed number.
So the market depth for any ETF should be constant, regardless of the value of the underlying assets (assuming non-extreme values and outside of crashes or rapid movements).
And yes, to be more exact, the market depth for an ETF should be a function of the amount of trading occuring in that ETF, not so much a constant. In any reasonable timeframe it should be constant.
So the market depth for any ETF should be constant, regardless of the value of the underlying assets (assuming non-extreme values and outside of crashes or rapid movements).
And yes, to be more exact, the market depth for an ETF should be a function of the amount of trading occuring in that ETF, not so much a constant. In any reasonable timeframe it should be constant.