Stella Cox became a Managing Director with the Dawnay, Day Group in January 1998. Stella and her team are responsible for Dawnay, Day's Middle Eastern relationships and, particularly, for transactions that DDCAP enters into with and on behalf of its Islamic clients. DDCAP represents a number of privately owned Middle Eastern organisations in their Islamic financing and investment activity. DDCAP, through its subsidiary DDGI limited (formerly Dawnay, Day Global Investment Limited) has also invested, for its own account, in a number of Islamic financial services initiatives. Stella represents the Group, where appropriate, at Board Level.

Stella has served as a member of the Board of Governors of the UK Institute of Islamic Banking and Insurance and worked as a member in support of the Islamic product and sector development committees formed by the Bahrain Monetary Agency (now Central Bank of Bahrain) and the Dubai International Financial Centre. Stella continues to serve as a member of the Islamic Financial Services Board Task Force on markets and instruments for Sharia'a Compliant Liquidity Management and is a non-Executive Director of Several financial Institutions in the Middle East.

Stella speaks regularly at global conferences and has co-authored several books on Islamic Finance Qualifications (IFQ) jointly offered by the UK Securities and Investment Institute and the Ecole Superieure des Affaires in Lebanon.