No, it's something that Pony relatively explicitly doesn't allow: AIUI, iso (non-aliasable, read/write), val (aliasable, read-only, no write) and tag (aliasable

No, it's something that Pony relatively explicitly doesn't allow: AIUI, iso (non-aliasable, read/write), val (aliasable, read-only, no write) and tag (aliasable, no read or write) are the only things that can be shared between actors/threads.