Is there, or is there planned to be a way to make payments to everyone holding an asset?

Suppose I am an asset issuer and I want to send 1 NXT per share to the Nxt account where the asset is held (like paying a dividend or interest). Can this be done?

Or would I need an external program or some sort of script to parse the blockchain, looking for accounts that hold shares of my asset and have it pay them individually?