Isaac Mamaysky is a financial advisor at QuantStreet Capital with a Series 65 designation and four years of industry experience. He has concurrent roles in academia and law, including positions at PACE Law School since 2024 and Potomac Law Group, PLLC since 2019. QuantStreet Capital serves individuals, trusts, retirement plans, businesses, and charitable organizations, offering discretionary separately managed account management, financial planning, consulting, and model-portfolio subscriptions. The firm employs a quantitative asset-allocation strategy driven by a proprietary machine learning model combined with discretionary oversight, providing multi–risk-level portfolios that include ETFs, mutual funds, stocks, options, and derivatives.

Harry Mamaysky is a financial advisor at QuantStreet Capital with five years of industry experience. He holds the Series 63 and Series 65 licenses and has worked at EBH Capital Management LLC since 2021. Mamaysky is also affiliated with Columbia Business School, where he has been involved since 2015. QuantStreet Capital serves individuals, trusts, retirement plans, businesses, and charitable organizations, offering discretionary separately managed account management, financial planning, consulting, and model-portfolio subscriptions. The firm employs a quantitative asset-allocation strategy using a proprietary machine learning model combined with discretionary oversight, constructing multi-risk-level portfolios that may include ETFs, mutual funds, stocks, options, and derivatives.