Joshua Fisher, the former Managing Director and Co-Head of Technology at Citadel Securities, has joined high-frequency trading firm Hudson River Trading two years after leaving the market-making firm founded by Citadel’s Ken Griffin.

Lombard Odier Investment Managers has added Valentin Petrescou and Didier Anthamatten to its alternative investment subsidiary 1798 Alternatives, where they will launch a Global Macro Absolute Return strategy for institutional and private clients, which is due to go live in Q3 2024

Prosek Partners, an independent marketing and communications agency for financial and professional services, has opened a new office in Abu Dhabi, which will be headed up by newly appointed Managing Director and Head of MENA Diana Estupinan.

Global fintech Broadridge Financial Solutions has appointed Hope Jarkowski as Chief Legal Officer, as of 6 May 2024. She succeeds Keir Gumbs, who served in the role until November 2023 before leaving to join financial services firm Edward Jones.

Balyasny Asset Management, Millennium Management and Point72 Asset Management are among the hedge fund majors that have seen an increase in both AUM and headcount over the past year, according to a report by Pensions & Investments.