Perimeter Desk
Perimeter People / Host; Writer of Net Interest
Marc Rubinstein writes Net Interest and hosts its companion podcast, Net Interest Extra. He is a former investment analyst and hedge-fund manager with more than twenty-five years of experience in finance, including a decade as a partner at Lansdowne Partners. Before that, he worked as an investment-bank analyst. His work examines the financial industry through writing and practitioner interviews. He also consults for companies and investment firms and invests in early-stage financial technology businesses.
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Practitioner interviews. Subscriber-supported, with some full episodes reserved for paid Net Interest subscribers. · Net Interest
Weekly stories explaining how financial businesses work, connecting banks, investors and fintech companies with the incentives and history behind their decisions and business models.
Weekly stories explaining how financial businesses work, connecting banks, investors and fintech companies with the incentives and history behind their decisions and business models.
Sources & further reading
Profile checked September 18, 2026. Editorial notes are Perimeter’s interpretation.