About a-team Marketing Services
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

Recorded Webinar: Agility as Alpha: How Trading Infrastructure Determines Who Wins in Volatile Markets

Tariff shocks, geopolitical realignment and macroeconomic regime shifts are redrawing the investment landscape faster than most firms’ technology stacks can keep up. For hedge funds and asset managers, the ability to move quickly into new asset classes, geographies or strategies is no longer just an operational concern – it is a front-office differentiator and, increasingly,...

BLOG

CloudMargin and Derivative Path Partner on Integrated Derivatives and Collateral Management

CloudMargin, the collateral management technology provider, and Derivative Path, the derivatives management platform, have entered into a strategic partnership to deliver an integrated front-to-back workflow for over-the-counter derivatives and collateral management, targeting regional and community banks as well as buy-side institutions. The partnership brings together Derivative Path’s DerivativeEDGE platform and CloudMargin’s cloud-native collateral and margin...

EVENT

AI in Capital Markets Summit London

Now in its 3rd year, the AI in Capital Markets Summit returns with a focus on the practicalities of onboarding AI enterprise wide for business value creation. Whilst AI offers huge potential to revolutionise capital markets operations many are struggling to move beyond pilot phase to generate substantial value from AI.

GUIDE

AI in Capital Markets Handbook 2026

AI adoption in capital markets has moved into a more disciplined phase. The priority is now controlled deployment: where AI can be used safely, where it can deliver measurable value, and how outputs can be governed, monitored and evidenced. The 2026 edition of the AI in Capital Markets Handbook examines how AI is being applied...