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Re:Launch HN: Double (YC W24) – Index Investing with 0% Expe... by gruez on Tuesday December 10, 2024 @03:23PM (#42381025)
"Citadel Securities is a separate entity from the hedge fund Citadel LLC"

https://en.wikipedia.org/wiki/Citadel_Securities

The market maker boogeyman is Citadel Securities, not Citadel LLC.

Re:Launch HN: Double (YC W24) – Index Investing with 0% Expe... by taway789aaa6 on Tuesday December 10, 2024 @05:43PM (#42382484)
Assuming that they have a proper firewall between the two and there are no conflicts of interest..