After a stock split, the revised quantity of shares is usually credited to your demat account within 1–2 working days after the record date.
Until the split shares are credited, your holdings may temporarily show an artificial drop in P&L, which will get corrected once the shares are updated.
If more than 4 working days have passed since the record date and you have still not received the split shares despite being eligible, please write to us, and we will check and share an update at the earliest.