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Re:Goldman Sachs is spending $100M to shave milliseconds off... by pedrocr on Friday August 02, 2019 @08:26AM (#20592444)
Not all liquidity is the same. I've seen calculations that stated that HFT doesn't actually add valuable liquidity to markets because the moments you need that extra liquidity are price uncertainty moments where HFT traders disappear. I don't have the reference on hand though.
Re:Goldman Sachs is spending $100M to shave milliseconds off... by growse on Friday August 02, 2019 @08:45AM (#20592530)
And yet Vanguard say that HFT helps lower their costs by adding market liquidity and therefore reducing spreads:

https://www.forbes.com/sites/timworstall/2014/04/28/bill-mcn...