About a-team Marketing Services
The knowledge platform for the financial technology industry
The knowledge platform for the financial technology industry

A-Team Insight Briefs

Jonathan Kellner Named CEO of MEMX

Subscribe to our newsletter

Jonathan Kellner has joined Members Exchange (MEMX), a recently established member-owned equities exchange. Founding members include Bank of America Merrill Lynch, Charles Schwab, Citadel Securities, E*Trade, Fidelity Investments, Morgan Stanley, TD Ameritrade, UBS, and Virtu Financial. Before signing on to MEMX, Kellner led Instinet through the acquisition of BlockCross ATS from State Street, and the transition through regulatory change, including Dodd-Frank and MiFID II.

Subscribe to our newsletter

Related content

WEBINAR

Upcoming Webinar: Navigating the Build vs Buy Dilemma: Cloud Strategies for Accelerating Quantitative Research

Date: 20 May 2026 Time: 10:00am ET / 3:00pm London / 4:00pm CET Duration: 50 minutes For many quantitative trading firms and asset managers, building a self-provisioned historical market data environment remains one of the most time-consuming and resource-intensive steps in establishing a new research capability. Sourcing data, normalising symbologies, handling corporate actions and maintaining...

BLOG

STS Digital and Haruko Integrate to Give Institutional Options Traders Unified Risk View

STS Digital, the regulated principal trading firm specialising in digital asset derivatives, has integrated with institutional portfolio management provider Haruko to deliver consolidated risk and position reporting for options traders. The integration allows institutional clients who trade vanilla and exotic options on STS Digital’s platform to view those positions on an aggregated basis alongside activity...

EVENT

RepRisk Sustainability Breakfast Roundtable London

The London sustainability breakfast is part of the global roundtable thought leadership event series hosted by RepRisk in key markets, including, New York, Toronto, London, Frankfurt, Oslo, Copenhagen, Stockholm, Hong Kong and Singapore in 2026.

GUIDE

Regulatory Data Handbook 2024 – Twelfth Edition

Welcome to the twelfth edition of A-Team Group’s Regulatory Data Handbook, a unique and useful guide to capital markets regulation, regulatory change and the data and data management requirements of compliance. The handbook covers regulation in Europe, the UK, US and Asia-Pacific. This edition of the handbook includes a detailed review of acts, plans and...