If you hold shares in a joint name combination, you cannot open a single-name demat account to hold those shares; the demat account must be opened in the same joint name combination as the share certificates.

Demat Account and Shareholding:

When you hold shares, they are typically represented by a share certificate or, in the case of dematerialized shares, they are held in a Demat account with a Depository Participant (DP).

Joint vs. Single Ownership:

If a share certificate or a demat account is in a joint name combination (e.g., "A and B"), then the shares are jointly owned by A and B.

Dematerialization and Account Matching:

To dematerialize shares (i.e., convert them from physical certificates to electronic form), the names on the share certificate and the names on the demat account must match.

Opening a Joint Demat Account:

If you have shares in a joint name combination, you need to open a demat account in the same joint name combination to hold those shares.

Example:

If you have a share certificate in the names "A and B", you cannot open a demat account in the name of only "A" and then dematerialize the shares; the demat account must be in the names "A and B".

Maximum Number of Joint Holders:

A demat account can have a maximum of three account holders: one primary holder and two joint holders.