Is there any way to instantly swap the images between two monitors?

It's a slightly weird question, but I just bought a BenQ PD2705U. I am thinking of buying a second one as I am starting stock trading soon.

My main one is placed dead center. My second one will be placed to the left of it.

Now, I want my stock trading charts to be on the left screen, as it does not need 100% of my attention at all times of the day. Most of the time, I just need it there for general reference, while I have my main center monitor doing whatever I am doing (YouTube, Gaming, Photoshop, watching movies, etc).

However, when I do need to actively work on my stock charts, I'd like to instantly bring the stuff on my left monitor over onto my main center monitor, and vice versa.

Is there a way to do this, and if so, how?