[paulgb]

Interesting, thanks for the pointer to that phrase, I'm reading up on it now.

Are there products that make it easy to do this? I imagine it would be theoretically possible but incredibly time-consuming to keep up with SPY by manually trading on RobinHood!

[wcoenen]

I believe the products that make it easy are currently only available through financial advisors, and for high net worth clients. But the demand seems to be there, so something accessible to the average retail investor may appear in the next few years.