If you unpledge today i.e. T Day before 3:30 PM then your pledged shares will be unpledged by the next working day i.e. on T+1 day.
If you unpledge today i.e. T Day after 3:30 PM then your pledged shares will be unpledged day after tomorrow, i.e. on T+2 day.
Please note: You unpledge request will fail if
1. You have zero or negative cash balance
2. If you have utilised the pledged margin
3. You have already sold your pledged stocks
For example, if you unpledge on Monday before 3.30PM, your shares will be unpledged on Tuesday.
If you unpledge on Monday after 3.30PM, then your shares will be unpledged on Wednesday
Please note: You unpledge request will fail if,
1. You have zero or negative cash balance
2. If you have utilised the pledged margin
3. You have already sold your pledged stocks