Marcus is a Partner at Southbox, an early-stage investment fund focusing in areas of high-growth technology startups and disruptive content producers. He founded TEDxHarlem in 2010 and has also consulted entertainers and athletes including Alicia Keys, Jay-Z, Lil Wayne, Nicki Minaj, 50 Cent, Shakira, The Black Eyed Peas, Kobe Bryant, Ray Lewis, Peyton Manning, Rihanna, Allen Iverson, Eli Manning.
Presently, Marcus is devoted to investing and advising early stage ventures. He also holds a deep commitment to social justice and criminal justice reform serving as a board member of New York Tri State Board of Directors for DefyVentures.org and LiberationPrisonYoga.org. Through his work with these organizations, Marcus has become a dedicated mentor to incarcerated men, women and youth and also volunteers as a yoga and meditation instructor leading juvenile programs at Rikers Island Prison.