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That's not the whole story. If 70% of the volume is HFT, it means you necessarily have a lot of HFT trading against HFT, which means a lot of HFT is going to be
by murbard2 14y ago
That's not the whole story. If 70% of the volume is HFT, it means you necessarily have a lot of HFT trading against HFT, which means a lot of HFT is going to be liquidity taking.
Fortunately, that's only on public exchanges. Most of the liquidity provision happens before trade even hit those exchanges.