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Re:Goldman Sachs is spending $100M to shave milliseconds off... by 1e-9 on Friday August 02, 2019 @05:33AM (#20591674)
Nobody has the whole picture. I would say that the more extreme an individual event is, the easier it tends to be to understand in retrospect. This depends greatly upon one's analytical sophistication, level of market data, fundamental product understanding, and professional network (to know what happened in other firms).
Re:Goldman Sachs is spending $100M to shave milliseconds off... by raxxorrax on Friday August 02, 2019 @07:52AM (#20592289)
If nobody has the whole picture, how can we be sure if it's beneficial?

edit: Or asked differently: What do we have now with high frequency trade established compared to the situation before?

Re:Goldman Sachs is spending $100M to shave milliseconds off... by growse on Friday August 02, 2019 @09:50AM (#20592871)
It's enormously cheaper to do business on markets nowadays. Back in the old days, spreads were sometimes multiple dollars on human-made markets with a lot of inventory.

With HFT, people compete to offer the best market, and spreads are in the pennies.