Prevent unauthorised transactions in your account. Update your mobile numbers/email IDs with your stock brokers. Attention Investors: Stock Brokers can accept securities as margin only through pledge in the depository system. Gopalji Broking Private Limited also does proprietary (Own A/C) trading. Prevent Unauthorized Transactions in your demat account. Update your Mobile Number with your Depository Participant. KYC is a one-time exercise while dealing in securities markets. No need to issue cheques while subscribing to an IPO. Funds remain in the investor's account until allotment.