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HN commenter, paraphrased: "HFTs pay brokerages money to see non-executed limit orders! That's outrageous."
Literally anyone can pay a trivial amount of money to see non-executed limit orders on the order book at a stock exchange, which exists in large part to do exactly this.
Literally anyone can pay a trivial amount of money to see non-executed limit orders on the order book at a stock exchange, which exists in large part to do exactly this.
Not dunking on the commenter here; this feels like a good encapsulation of something which is easy for a technologist to believe so good to correct publicly.
The purpose of a limit order is to ask an exchange to advertise your willingness to buy or sell a defined quantity of stock at a defined price, so if you do not want market participants to learn you wish to buy a defined quantity of stock at a defined price, perhaps don't do that
