Jonathan Siegman

Jonathan Siegmann is a Managing Director of Equity Research at Stifel, specializing in the aerospace and defense sector. He covers companies such as Booz Allen Hamilton and Terran Orbital, achieving a strong performance track record with a 92% success rate and average return of 9.30% per rating according to TipRanks over the past year, alongside a 53.33% success rate and 9.36% average return noted on StockAnalysis. Siegmann joined Stifel in 2025 after serving as Senior Vice President of Corporate Development at Terran Orbital from 2022 to 2024, where he led its sale to Lockheed Martin, and spending nearly 15 years at Fidelity Investments as a Portfolio Manager and Equity Research Analyst, including managing the Select Defense & Aerospace fund from 2015 to 2021. He holds a BS from Rensselaer Polytechnic Institute, an MBA from New York University's Stern School of Business, and is a Chartered Financial Analyst charterholder.