what are you rambling on about ? I can easily imagine market making strategies in options getting only a fill at ratio above 10:1, nothing horribly designed about that.Quote from HoundDogOne:
This is an outrageous amount...
Something on the order of $0.01 might be what exchanges could get away with charging.
I have never been charged a cancellation fee...
But on the NYSE one must approach a 10:1 ratio of cancels vs fills to for anyone to flag you.
Generally...
Only ** very badly designed strategies ** would result in > 10:1 cancel/fill ratios...
Typical quantitative strategies might have a 3:1 ratio.
I'll bet that horribly designed algorithmic "black boxes" are becoming a problem for exchanges...
HOGGING bandwidth without making any trades.
Exchanges have to defend themselves against idiots running algos.