MEET Alastair Sewell
Alastair is responsible for developing and executing the firm’s liquidity solutions business strategy, covering money market funds through to ultra-short duration bond funds. In this newly created role, he leads the strategy’s external relationships, drives new product launches, produces research and content and supports portfolio managers in achieving performance targets.
Alastair joined Aviva Investors from Fitch Ratings, where he was head of fund ratings, responsible for producing ratings and research on money market and short duration bond funds in EMEA and Asia Pacific. Prior to this, he was a CDO rating analyst in Fitch’s structured credit group.
Alastair started his career at a UK local authority in 2003. He holds a BSc in Biology from the University of Bristol, an MBA from the University of Bath and a CFA Institute Certificate in ESG Investing. Alastair is a CFA charterholder.




Blockchain: The quiet technology reshaping financial infrastructure.
29-06-2026 | Tokenisation is more than a technical novelty. Our simple guide explains how blockchain turns assets into digital tokens and examines the potential benefits and risks.
Cash Meets Tech: Key Takeaways from XLConnect with Aviva Investors
20-05-2026 | At our XLconnect session together with Aviva Investors, Alastair Sewell shared how treasury teams are using AI, real-time data and investment portals to manage cash faster and with better visibility.
37th Finance Symposium: Make Connections That Count
30-04-2026 | We’re excited to provide you with a preview of the treasuryXL partners who will be in attendance at Finance Symposium.
XLconnect: Modern Liquidity & Investment Strategies
09-04-2026 | An exclusive in-person event by treasuryXL at Hotel Okura Amsterdam in cooperation with Aviva Investors & Treasurer Search
Benchmarking cash, part two
19-02-2026 | Aviva Investors’ liquidity team examines European corporate cash holdings and the increasing appeal of money market funds (MMFs)
Liquidity Outlook 2026
14-01-2026 | What liquidity investors should expect in 2026, from falling rates to regulation and tokenised money market funds.