Correct me if I'm wrong, but won't the tick size be incrementally larger as the pps rises. So it might take more $ invested to uptick, but the uptick represents a larger increase in early investor's account balance.
I think your point about needing more money to move a large number of shares at a higher pps level is valid, but the more accumulation (with the intent of holding) that goes on at these levels the fewer shares are available at higher levels as well.
It will be very interesting (and exciting) to see how ETIM plays out over the years.
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