Who is the OT for pokemon that evolved by trade?

Question

For example when you trade Haunter to get Gengar is Gengar's OT the same as Haunter's, or the new trainer's? I want to know so I can get the 1.5x exp. while training.

Answer 1

It would be the trainer who sent it to you's pokemon, meaning the OT is still the original owners, not yours.

Comments

Yep. But if you trade your Haunter away and back again, you are still the OT and don't get extra EXP.