Definitely this. The fact that you have managed to keep yourself going investing for 15 years is impressive. Put some of what you did on the resume / CV and it

Definitely this. The fact that you have managed to keep yourself going investing for 15 years is impressive. Put some of what you did on the resume / CV and it will be much less empty. What types of models? Did you you data analysis? Those are things that might get you into a Data Science role of some sort somewhere. Something like Kaggle might be a good way to hone some of those skills and make it to someone's radar.