What antipsychotic is neither activating nor sedating?

Enormous variability: Whether an antipsychotic medication is felt to be activating or sedating depends A LOT on the individual patient. It is quite hard to predict who will experience which side effects. Activation, by the way, is sometimes confused with "akathisia" - which is a sense of restlessness, often accompanied by a feeling of anxiety/tension and a need to move around or pace.