justlurkin12

Actually if RH didn't wire over the funds, they would be dissolved due to illiquidity.

T+0 implies same day not instant. I think you can enable all of those features with hours of delay instead of days.

That's my question as well. I think it's because the customer capital has to be transferred to the counterparty that issued the sell. I imagine that it makes things complicated if the DTCC has to send over 1-10% of this amount and then the brokerage that executed the buy has to send over the rest so, if I had to guess, they did this for simplicity's sake. Btw the requirement to not use customer collateral is enforced by the DTCC and not at a brokerage level discretion.

Real time securities wouldn't need brokerages to front collateral while the trades settle by the virtue of no settling period. They would only have to deal with customer capital used to buy the stock.

dumb question, why is not practical? As for the root problems, those are not related to the issue from last week (not sure if you're aware, but margin had no factor in play with the DTCC requirements).