LeaderPortfolio
Spencer
Michael Spencer
Rank #2782
UNITED KINGDOMFinance & InvestmentsStock exchange

Michael Spencer

Net Worth
$1.356B
0% (24h)
Michael Spencer, born in 1955, is a British billionaire businessman and philanthropist, known for his success in the financial industry. He is the founder of NEX Group (formerly ICAP), a leading electronic markets and post-trade business, and was once described as the richest self-made person in the City of London. Spencer's wealth stems from his involvement in the stock exchange and financial investments. His career includes significant roles at Simon & Coates, Drexel Burnham, and Charles Fulton before founding Intercapital Brokers in 1986, which later became ICAP. He is also a life peer and has served as the Treasurer of the Conservative Party.

How to read Michael Spencer's profile

Public net-worth figures are estimates. They combine observable inputs—typically listed equity, disclosed transactions, and market prices—with editorial judgment where filings are incomplete (for example, private holdings, debt, or cross-holdings). For Michael Spencer, we anchor the narrative to Stock exchange and Stock exchange, then update the headline number as markets move. The chart on this page is meant to show trajectory, not a certified balance sheet.

When you see $1.356B alongside global rank #2782, interpret it as our best synthesis of widely cited ownership and price signals—not a claim about cash on hand. Estimates can diverge from other publishers because of different treatment of options, trusts, charitable vehicles, or illiquid assets. We document the general approach in methodology and welcome corrections via corrections.

Country (UNITED KINGDOM) and career milestones on this page are curated for reader context; they should be verified against primary sources when used for research. Editorial metadata for this profile is refreshed on a rolling basis, with deeper audits at least annually (last noted cycle: 2026).

Looking for depth? When available, the dossier and timeline sections below add long-form context beyond the headline number—prioritize those modules when evaluating claims about strategy, controversies, or philanthropic commitments.

The Full Dossier

Early Life and Education

Michael Alan Spencer, born on May 30, 1955, in Kuala Lumpur, British Malaya, spent his early childhood in Sudan and Ethiopia due to his father's international civil service career. At the age of eight, he was sent to England to attend boarding school. He pursued higher education at Corpus Christi College, Oxford, where he studied physics.

Rise to Success

Spencer's career began in 1976 at Simon & Coates, followed by roles at Drexel Burnham Lambert, and Charles Fulton. In 1986, he co-founded Intercapital Brokers, which later evolved into ICAP. Under his leadership, ICAP became a global leader in inter-dealer broking. ICAP was the first to launch a real-time screen that displayed live prices. In 2018, NEX Group was acquired by CME Group, a deal that granted Spencer shares in CME.

Key Business Strategies

A pivotal strategy in Spencer's success was his early recognition of the potential in electronic markets. He focused on providing services for financial institutions, expanding into foreign exchange, and post-trade processing. He emphasized innovation and acquisitions to build what he called the global electronic superhighway, smoothing transactions across major financial centers.

Philanthropy

Spencer is a dedicated philanthropist, founding the ICAP Charity Day in 1993, an annual event that has raised over £170 million for charities. He also founded the Borana Conservation Trust. The Spencer Family Foundation supports various causes, including conservation, military, education, and initiatives in Africa.

Career Timeline

2020

Life Peerage

Granted a peerage by UK Prime Minister Boris Johnson, becoming Baron Spencer of Alresford.

2018

CME Group Acquisition

NEX Group acquired by CME Group.

2016

NEX Group Formation

ICAP's global voice broking business was sold, and remaining businesses formed NEX Group.

2010

Ernst & Young World Entrepreneur of the Year

Awarded the Ernst & Young World Entrepreneur of the Year.

2006

ICAP Enters FTSE 100

ICAP joined the FTSE 100.

2001

ICAP rebrands

Garban-Intercapital is renamed ICAP.

1993

Founded ICAP Charity Day

Launched the annual charity event.

1986

Founded Intercapital Brokers

Co-founded Intercapital Brokers, later known as ICAP.

1980

Joined Drexel Burnham Lambert

Spent three years broking financial futures.

1976

Investment Analyst

Joined city broker Simon and Coates.

Philanthropic Impact

Charity$215M

ICAP Charity Day

Annual event donating trading revenues to charities.

ConservationUndisclosed

Borana Conservation Trust

Supports endangered species in Kenya.

Philanthropy$10M annually

Spencer Family Foundation

Supports education, arts, and conservation worldwide.

Key Business Ventures & Holdings

CompanyStakeValue
CME Group
Chapel Down27.30%

Net Worth History

In-Depth Analysis

Early Life and Education

Michael Alan Spencer, born on May 30, 1955, in Kuala Lumpur, British Malaya, spent his early childhood in Sudan and Ethiopia due to his father's international civil service career. At the age of eight, he was sent to England to attend boarding school. He pursued higher education at Corpus Christi College, Oxford, where he studied physics.

Rise to Success

Spencer's career began in 1976 at Simon & Coates, followed by roles at Drexel Burnham Lambert, and Charles Fulton. In 1986, he co-founded Intercapital Brokers, which later evolved into ICAP. Under his leadership, ICAP became a global leader in inter-dealer broking. ICAP was the first to launch a real-time screen that displayed live prices. In 2018, NEX Group was acquired by CME Group, a deal that granted Spencer shares in CME.

Key Business Strategies

A pivotal strategy in Spencer's success was his early recognition of the potential in electronic markets. He focused on providing services for financial institutions, expanding into foreign exchange, and post-trade processing. He emphasized innovation and acquisitions to build what he called the global electronic superhighway, smoothing transactions across major financial centers.

Philanthropy

Spencer is a dedicated philanthropist, founding the ICAP Charity Day in 1993, an annual event that has raised over £170 million for charities. He also founded the Borana Conservation Trust. The Spencer Family Foundation supports various causes, including conservation, military, education, and initiatives in Africa.

Data Sources & Methodology

Figures for Michael Spencer are synthesized from the sources below and cross-checked against our net worth methodology. Estimates may lag market moves; see corrections to report discrepancies.