His #1 achievement is the current economy. The stock market is not the economy. Anyways, this is nothing more than a temporary drop due to the Coronavirus fear mongering. It will open up more buying opportunities once it settles and we will be back where we were earlier this year.
Why do I sense a bit of glee in your post? Are you that deranged that you wish the country would tank so you can continue the Orange Man Bad diatribe?