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Re:Positions, Profit and Loss by paulpauper on Sunday August 01, 2021 @02:09PM (#28028517)
For most people, using these brokers will be something that they will be quite familiar with, even though the actual trading of their shares will happen somewhere in the background. Brokers in fact do not always have to go to an exchange directly, and many will route (send) client orders to various third parties such as market makers or other brokers. This was made quite apparent in 2020 when it was noticed that the broker RobinHood was selling client order flow (client orders) to the hedge fund Citadel.

Online brokers have been doing this forever. TD Ameritrade is by far the worst offender in this regard, way worse than Robinhood.

Re:Positions, Profit and Loss by tedyoung on Sunday August 01, 2021 @04:49PM (#28029819)
Yes, brokerages have all been doing this for a while, but while TD Ameritrade pays more overall than Robinhood, does it also do more trades (not in terms of number of trades, but dollar value)? Without that info, it's hard to tell who's worse.