How does one know that the DP has updated the account after each transaction?
The DP provides a Transaction Statement periodically, which gives details of current balances and various transactions made through the depository account. If desired, DP may provide the Transaction Statement at intervals shorter than the stipulated ones, probably at a cost. Depositories also provide SMS Alert facility for demat account holders whereby investors can receive alerts for debits (transfers) to their demat accounts and for credits in respect of corporate actions for IPO and offer for sale. Under this facility, investors can receive alerts, a day after such debits (transfers)/credits take place. These alerts are sent to those account holders who have provided their mobile numbers to their Depository Participants (DPs).