MASECO

Spear’s Review

Founded in 2008 by Josh Matthews and James Sellon, MASECO is a specialist wealth manager with a focus on US and UK high- and ultra-high-net-worth clients with multi-jurisdictional wealth requirements.

The firm has first-hand experience and a deep understanding of the cross-border needs of US citizens in particular, and can advise on US-UK tax-efficient strategies; US, UK and offshore custody options; multi-currency investments; and US and UK saving and investment products.

MASECO, which is authorised and regulated by the Financial Conduct Authority in the UK and registered with the Securities and Exchange Commission in the US, is also a founding company of the UK B Corp movement.

In March 2026, the firm, which holds over $5 billion in assets under management, with offices in London, Zurich and Geneva,  revealed that it had been bought by American wealth planner Creative Planning, subject to regulatory approval.