I think the study referred to is this one: https://www.mdpi.com/2071-1050/13/5/2931/pdf https://www.mdpi.com/2071-1050/13/5/2931/pdf (there have been a few stud

I think the study referred to is this one: https://www.mdpi.com/2071-1050/13/5/2931/pdf https://www.mdpi.com/2071-1050/13/5/2931/pdf (there have been a few studies, but that's the only one that fit the “this year” criteria). I'm generally skeptical of papers that involve correlations with equity returns (because there is a reverse publication bias -- if you find a true source of alpha, your incentive is to trade it rather than publish it). But besides my general a priori skepticism, I don't see any red flags at a glance.