Joseph Dionisio joined Polaris in May 2025 as the manager of trading, focusing on all day-to-day trading activities at the firm. In this role, he is responsible for oversight of trading workflow, risk management and portfolio guidelines, while attuned to the intersection of trading and operations, brokerage and compliance frameworks.
Mr. Dionisio most recently served as the senior trader at Panagora Asset Management in Boston, a quantitative asset management firm with $44 billion in AUM. He was responsible for trading global, multi asset quantitatively engineered portfolios. He also served as a developer, designing and coding the main trading risk optimization algorithm for order flow. He served in this role at Panagora for seven years. Previously, he worked with State Street Corporation for nearly 14 years as a position trader for multi-asset transitions, as a proprietary trader for an ETF arbitrage strategy and developer for pre- and post-trade tracking. Prior trading positions were held at Fidelity Investments, The New England (MetLife) and others.
He graduated from Boston University with Master’s degrees in actuarial science/financial mathematics and banking/financial management. He earned his CFA designation and is a member of the CFA Institute, CAIA Association, CFA Society Boston and Global Association of Risk Professionals (GARP).
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