“Devin is both a natural storyteller and looks at the world in a unique, thoughtful way. Invariant will fast become a favorite in your inbox.”

“Not your typical financial newsletter. Devin's curiosity bleeds through writing style, structure and content-matter of Invariant. I am never quite sure what I will receive in my inbox, but it's always high quality and off the beaten track, and that's why I enjoy it. ”

“Excellent deep dives, deeply researched and accompanied by relevant data. Also great to see someone dig back in to some older industry stalwarts. ”