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.
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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.
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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
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Replying to @patio11
People's objection isn't to internalizers seeing your never-executed limit order, but to them seeing your (limit, or market/marketable) order *first*, and being able to trade with it at the expense of the rest of the market.
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The commenter very clearly said that they were worried that HFTs would see resting orders, though they did not use that word.
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