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Re:Robinhood launches 3% checking account by keredson on Thursday December 13, 2018 @12:22PM (#18674054)
> Aren't all orders eventually public anyway?

no. most orders are not executed on the public exchanges, but by internal matching via your broker and a market maker. (also most exchanges only support trades in multiples of 100 shares.)

Re:Robinhood launches 3% checking account by ycombobreaker on Thursday December 13, 2018 @01:15PM (#18674604)
Exchanges handle odd lot orders nowadays. Maybe some brokers or dark pools do not, but they are not exchanges (their quote is not protected, or they show no quote).

I believe all customer trades/executions on actual securities should eventually be publicly visible, though there may be a small delay for them to "print to the tape".