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Re:Robinhood denies claims that it sold GameStop shares out ... by grey-area on Saturday January 30, 2021 @01:58AM (#25966924)
That is possible in many countries without margin (using faster payments and open banking).
Re:Robinhood denies claims that it sold GameStop shares out ... by ChrisIsTaken on Saturday January 30, 2021 @06:44AM (#25968313)
Australia has had real time transfers on our reserve bank's "New Payments Platform" since 2018. Transfers are finalized in a few hundred milliseconds.

And we're actually half a decade behind most of Asia and Europe.