Can I use the profit I made by trading in F&O to trade further on the same day?

In case of derivatives (F&O), the settlement of funds happens on the next trading day i.e. T+1, hence your fund balance will not reflect the profits made by trading in F&O until they are settled by the exchange.

Further, if the T+1 day is a settlement holiday, the intraday F&O profits will be available on the next trading day.

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