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A comment on Robinhood Making Millions Selling Out Their Millennial Customers to HFTs. Parent comment

Re:Robinhood Making Millions Selling Out Their Millennial Cu... by nostrademons on Tuesday September 11, 2018 @01:42AM (#17957426)
It's been over a decade (2007) since I dealt with order books, but when I was looking at this (writing a product to detect trade-throughs), it was a Reg NMS violation to execute an order for a price worse than the best listed on an exchange at the time.

...OTOH, what that product revealed was that Reg NMS violations were pretty rampant and the SEC wasn't interested in doing anything about it. You may have difficulty enforcing this.

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Re:Robinhood Making Millions Selling Out Their Millennial Cu... by rapsey on Tuesday September 11, 2018 @02:46AM (#17957633)
> it was a Reg NMS violation to execute an order for a price worse than the best listed on an exchange at the time.

Orders take time to process. HFT guys are fast enough to react and make money from it.

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