
Spencer Gareiss
Founder & CEO of Greenridge Group and author of Mental Models. At Robinhood he built Robinhood Derivatives from zero to one and led launches across short selling, the Legend trading ladder, the Cortex scanner, and Robinhood Ventures, earning the firm's Founder's Award. He is co-founder of /mkt and chairman of Lifted Ventures, holds the Series 7, 24, 79, 65, and 3, and passed CFA Levels I and II in the 99th percentile. A summa cum laude graduate of Arizona State (Barrett Honors) and a Captain in the U.S. Army Reserve, decorated with the Army Commendation Medal.




