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A comment on FINRA Orders Record Financial Penalties Against Robinhood. Parent comment

Re:FINRA Orders Record Financial Penalties Against Robinhood by f2ostie on Monday July 05, 2021 @06:18AM (#27736302)
It really isn't.
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Re:FINRA Orders Record Financial Penalties Against Robinhood by fighterpilot on Monday July 05, 2021 @06:43AM (#27736470)
A single gamble in a liquid stock has an expected cost of 0.2%-1.0% of the notional value, due to crossing the bid-ask spread twice, which is smaller than casino margins.

So it is better in terms of expected costs if we're comparing 1 daytrade gamble with 1 casino gamble.

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