Carlos Slim

Carlos Slim Helú (Spanish pronunciation: [ˈkaɾlos esˈlim eˈlu]; born January 28, 1940) is a Mexican business magnate, investor, and philanthropist. As of July 2025, he has a net worth of $99.1 billion, making him the richest person in Latin America and the 18th-wealthiest person in the world. From 2010 to 2013, Slim was ranked as the richest person in the world by Forbes magazine, a position he held for four consecutive years.

Slim is the chairman and chief executive of the conglomerate Grupo Carso, through which he controls a vast business empire spanning telecommunications, construction, mining, real estate, media, retail, and financial services. His wealth is primarily derived from his telecommunications holdings, particularly América Móvil - one of the largest mobile network operators in the world, operating in 23 countries across the Americas and Europe - and Telmex, which maintained a virtual monopoly on landline telephone service in Mexico for decades.

The son of Lebanese immigrants to Mexico, Slim built his fortune through shrewd investments during Mexico's economic crises, strategic acquisitions during the country's privatization era of the 1990s, and aggressive expansion of his telecommunications empire throughout Latin America. However, his business practices have generated significant controversy, with critics accusing him of monopolistic behavior, charging excessive prices, and stifling competition - practices that have cost the Mexican economy billions of dollars according to international organizations.

Despite the controversies, Slim is also known for his philanthropic work, particularly through the Fundación Carlos Slim and the Museo Soumaya, a world-class art museum he built in memory of his late wife, which houses over 66,000 works of art and offers free admission to the public.

Early Life and Family Background

Lebanese Heritage

Carlos Slim Helú was born on January 28, 1940, in Mexico City, Mexico, to Julián Slim Haddad and Linda Helú Atta, both Maronite Christians who had emigrated from Lebanon. His father, Julián, arrived in Mexico in 1902 at age 14, during the Ottoman Empire's rule of Lebanon, fleeing religious persecution and seeking economic opportunity.

Julián Slim started as a dry goods merchant, opening a small store called La Estrella del Oriente (The Star of the Orient) in downtown Mexico City. Through hard work and business acumen, he gradually expanded his operations, eventually becoming successful enough to invest in Mexican real estate during the Mexican Revolution of the 1910s - a time when property values were depressed and many others were fleeing the country. These contrarian investments laid the financial foundation for the family's future wealth.

Carlos was the youngest of six children (five boys and one girl). His father taught him fundamental business lessons from a young age, including:

• The importance of maintaining detailed financial records
• The value of investing during economic downturns when others are fearful
• The power of compound interest and long-term wealth accumulation
• The necessity of frugality and avoiding ostentation despite wealth

Julián Slim required young Carlos to keep a financial ledger from age 11, recording all income, expenses, and investments - a practice Carlos has maintained throughout his life. Tragically, Carlos's father died in 1953 when Carlos was just 13 years old, but the business principles he had instilled would guide Carlos throughout his career.

Education

Slim attended the National Autonomous University of Mexico (UNAM), where he studied civil engineering. He graduated in 1961 with a degree in civil engineering, though he would never practice engineering professionally, instead immediately entering the business and investment world.

During his university years, Slim was already investing in stocks and real estate, applying the lessons his father had taught him. By the time he graduated, he had already begun building a modest investment portfolio and had developed the analytical skills and discipline that would characterize his investment approach.

Slim also taught algebra and linear programming at UNAM for a brief period, demonstrating both his mathematical aptitude and his connection to the institution that had educated him.

Meeting Soumaya Domit

In 1964, when Carlos Slim was 24 years old, he accompanied his mother to visit their neighbors in Mexico City. There, he met Soumaya Domit Gemayel, the 15-year-old daughter of a Lebanese-Mexican family. Their mothers were friends, and the families lived close to each other.

Soumaya's family, like Carlos's, was of Lebanese Christian origin, and they shared similar cultural backgrounds and values. Despite the 9-year age difference and Soumaya's youth at their first meeting, Carlos was smitten. The two began a courtship, and they married on March 27, 1966, when Soumaya was 17 and Carlos was 26.

For their honeymoon, the couple embarked on a 40-day trip around the world, visiting England, Greece, New York, Naples, Spain, and France - a grand tour that reflected Carlos's growing prosperity and their shared love of art and culture.

Family Life

Carlos and Soumaya had six children together:

1. Carlos Slim Domit (born 1967) - Now chairman of Grupo Carso 2. Marco Antonio Slim Domit - CEO of Grupo Financiero Inbursa 3. Patrick Slim Domit - Chairman of Inmobiliaria Carso 4. Soumaya Slim Domit - Runs the Soumaya Museum 5. Vanessa Slim Domit - Involved in family business and philanthropy 6. Johanna Slim Domit - Involved in family business and philanthropy

The couple's partnership extended beyond family life into business. Together, they built their business empire, and in 1980, when Carlos created his holding company, he named it Grupo Carso - a portmanteau derived from the first letters of their names: CARlos and SOumaya. This naming reflected how central Soumaya was to Carlos's life and ambitions.

Soumaya was known for her deep love of art and culture, and she and Carlos assembled one of the world's most significant private art collections, with particular strengths in European old masters, Mexican art, and sculptures by Auguste Rodin.

Soumaya's Death

Tragically, Soumaya died on March 7, 1999, at age 51, from complications related to chronic kidney disease. Her death devastated Carlos, who had been married to her for 33 years. He has never remarried, and close associates say he still speaks of her frequently more than two decades after her passing.

In her memory, Carlos built the Museo Soumaya, one of Mexico's most iconic cultural institutions, which opened in 2011. The museum, designed by Carlos's son-in-law, architect Fernando Romero, is a stunning asymmetric structure inspired by Rodin sculptures. It houses the Slim family's art collection of over 66,000 works spanning 30 centuries, from Pre-Hispanic Mesoamerican artifacts to European old masters to modern and contemporary art. The museum offers free admission, reflecting Soumaya's commitment to making art accessible to all.

Early Business Career

Stock Trading and Inversora Bursátil (1965)

After graduating from UNAM in 1961, Slim immediately entered the world of finance and investment rather than pursuing engineering. He began working as a stock trader and analyst, often working 14-hour days analyzing companies and making investments.

By 1965, at just 25 years old, Slim's private investment and business ventures had generated profits of approximately $400,000 (equivalent to several million dollars today). With this capital, he founded Inversora Bursátil, a stock brokerage house in Mexico City.

Slim's investment approach was highly analytical and contrarian. He sought undervalued companies with strong fundamentals, often investing when others were fearful. He maintained detailed spreadsheets analyzing every aspect of potential investments - a level of rigor unusual in Mexico's business culture at the time.

Inmuebles Carso (1966)

In 1966, the same year he married Soumaya, Slim founded Inmuebles Carso, a real estate development and holding company. By this time, his net worth had grown to approximately $40 million, making him a wealthy man by Mexican standards before age 30.

Through Inmuebles Carso, Slim invested in commercial and residential real estate in Mexico City, applying his father's lesson about buying real estate during uncertain times. The company became a vehicle for acquiring and managing a growing portfolio of properties and business interests.

Grupo Carso (1980)

In 1980, Slim consolidated his various business interests into a holding company called Grupo Carso (named after Carlos and Soumaya). This holding company structure allowed Slim to pursue diverse investments while maintaining centralized control and financial discipline.

By 1980, Slim's business interests included:

• Real estate holdings
• Stock market investments
• Manufacturing interests
• Construction companies
• Mining operations

However, it was the economic crisis of the early 1980s that would provide Slim with his greatest opportunity.

The 1982 Mexican Economic Crisis: Slim's Defining Opportunity

The Crisis

In 1982, Mexico experienced a catastrophic economic crisis characterized by:

• Debt default on $80 billion in foreign loans
• Nationalization of the banking system
• Massive capital flight
• Peso devaluation
• Hyperinflation
• Sharp economic contraction

Most Mexican businesspeople were fleeing to safety, selling assets, and moving capital abroad. Foreign investors abandoned the Mexican market en masse.

Slim's Contrarian Bet

While others panicked, Carlos Slim saw opportunity. Following his father's philosophy of investing when others are fearful, Slim began aggressively acquiring Mexican companies at deeply depressed valuations.

As Slim later explained: "When there is a crisis, that's when opportunities come. It's when things are bad that you can acquire companies or projects very cheaply."

Between 1982 and 1990, Slim executed a breathtaking series of acquisitions, buying controlling or substantial stakes in dozens of Mexican companies across multiple sectors.

Key Acquisitions During the Crisis Era

1981-1986:

• Cigatam (1981): A cigarette manufacturer and the Mexican division of British American Tobacco - one of Slim's first major acquisitions, providing substantial cash flow
• Sanborns (1982): Mexico's iconic retail chain of restaurants, pharmacies, and department stores
• Hershey Mexico (1985): 50% stake in the Mexican operations of Hershey chocolate company
• Seguros de México (1984): Insurance company purchased for $55 million
• Fianzas La Guardiana: Another insurance company
• Nacobre: Copper manufacturer
• Empresas Frisco: Mining company

In 1984, Slim combined several financial services companies (Casa de Bolsa Inversora Bursátil, Seguros de México, and Fianzas La Guardiana) to create Grupo Financiero Inbursa, which became one of Mexico's leading financial institutions.

By the late 1980s, Slim had assembled a formidable conglomerate spanning retail, manufacturing, mining, insurance, and banking - all acquired at bargain prices during Mexico's darkest economic hours.

The Telmex Privatization: Building a Telecommunications Empire

Privatization of Teléfonos de México (1990)

The acquisition that would transform Slim from a wealthy Mexican businessman into one of the world's richest individuals came in 1990 with the privatization of Teléfonos de México (Telmex), Mexico's state-owned telephone monopoly.

Under President Carlos Salinas de Gortari's privatization program, the Mexican government put Telmex up for sale. The company was inefficient, with only 5 million telephone lines serving a country of 80 million people, and notoriously poor service (customers often waited years for telephone installation).

Slim assembled a consortium including:

• Grupo Carso (Slim's holding company)
• Southwestern Bell Corporation (US telecom company, now part of AT&T)
• France Télécom (French state telecom)

In December 1990, this consortium purchased Telmex for $1.76 billion, acquiring a 51% controlling stake. The Mexican government structured the deal to maintain Telmex's monopoly position for several years, ostensibly to allow the company to modernize and expand service.

Slim became chairman and the dominant figure in Telmex's management. The company invested billions in infrastructure modernization and expanded telephone service dramatically. However, it also maintained high prices and continued its monopolistic practices.

América Móvil: Building Latin America's Telecom Giant

In 2000, Telmex spun off its mobile telephone division as América Móvil, which went public in 2001. Slim and Grupo Carso retained the largest stake in this new company, which would become even more valuable than Telmex itself.

América Móvil embarked on an aggressive expansion campaign throughout Latin America, acquiring mobile operators in country after country:

• Telcel (Mexico) - México's largest mobile carrier
• Claro (Brazil, Argentina, Chile, Colombia, Peru, and other Latin American countries)
• Telmex (later re-acquired its former parent in 2011)

By 2010, América Móvil had become the largest mobile network operator in Latin America and the fourth-largest in the world, with operations in 23 countries and over 280 million subscribers.

The company dominated multiple Latin American markets:

• Mexico: 70% of mobile market, 80% of landlines
• Brazil: Major market share through Claro and Net
• Colombia: Dominant position
• Central America: Near-monopoly in many countries

Wealth and Status as World's Richest Person

Rise to Richest Person (2010-2013)

Slim's wealth grew exponentially as América Móvil and his other holdings appreciated. In March 2010, Forbes magazine declared Carlos Slim the richest person in the world, with an estimated net worth of $53.5 billion, surpassing Bill Gates and Warren Buffett.

Slim held the title of world's richest person for four consecutive years:

• 2010: $53.5 billion
• 2011: $74 billion
• 2012: $69 billion
• 2013: $73 billion

At his peak in 2012-2013, Slim's wealth represented approximately 6% of Mexico's entire GDP, an extraordinary concentration of wealth in a single individual.

Source of Wealth

Slim's wealth derived primarily from:

• América Móvil: Approximately 40-50% of net worth
• Grupo Carso: Industrial conglomerate
• Grupo Financiero Inbursa: Banking and insurance
• Inmobiliaria Carso: Real estate holdings
• Grupo Sanborns: Retail operations (Sanborns, Sears Mexico, etc.)
• Minera Frisco: Mining operations
• Various other holdings: Including stakes in The New York Times, Saks Fifth Avenue, and numerous other companies

Current Net Worth (2025)

As of July 2025, Slim's net worth is estimated at $99.1 billion by Bloomberg Billionaires Index, making him:

• The richest person in Latin America
• The 18th richest person in the world
• One of fewer than 20 people with wealth exceeding $90 billion

Monopoly Controversies and Criticism

Despite his business success, Slim has faced intense criticism for monopolistic practices that many argue have harmed Mexican consumers and economic development.

Monopoly Control

Critics point to the extraordinary market concentration in Slim's telecommunications companies:

• Telmex: Controls approximately 80% of Mexico's landline market
• Telcel (América Móvil subsidiary): Controls approximately 70% of Mexico's mobile phone market
• Combined: Near-total dominance of Mexican telecommunications

This level of market control is unprecedented in any major economy and would likely be illegal in the United States, European Union, or other developed markets.

High Prices and Poor Service

Multiple studies have documented that Mexican telecommunications customers pay among the highest prices in the world while receiving substandard service:

• According to the OECD, Mexico had some of the highest mobile and fixed-line prices among OECD member countries
• Telmex charges among the world's highest usage fees for telephone service
• Service quality lags behind comparable Latin American countries with more competitive markets

Economic Damage

The economic impact of Slim's monopoly has been quantified by international organizations:

• A 2012 OECD report found that lack of competition in Mexico's telecom sector cost the Mexican economy $129.2 billion between 2005 and 2009
• This represented approximately 1.8% of Mexico's GDP every year
• The report concluded that monopolistic pricing and underinvestment in infrastructure significantly harmed economic growth

According to economist Celso Garrido, Slim's domination of Mexico's conglomerates prevents the growth of smaller companies, resulting in a shortage of paying jobs and constrained economic opportunity.

Regulatory Actions

Mexican authorities have attempted to address Slim's market dominance:

• 2011: Mexico's Federal Competition Commission fined Telcel $1 billion for monopolistic practices related to charging excessive interconnection fees - the largest fine in Mexican history
• 2013-2014: Constitutional telecommunications reform aimed at breaking up monopolies and increasing competition
• 2014: América Móvil declared a "preponderant operator" subject to enhanced regulation
• 2017: Regulatory pressure forced América Móvil to reduce market share and sell some assets

However, critics argue these measures have been largely ineffective, with Slim's companies maintaining dominance through various strategies.

Criticism of Wealth Source

Many critics argue that Slim's wealth stems not from innovation or creating value, but from:

• Exploiting a government-granted monopoly
• Charging excessive prices to captive customers
• Close relationships with political leaders who protected his interests
• Preventing competition through legal and regulatory maneuvering

As one analyst noted: "Slim's fortune was amassed by forming a telecommunications monopoly thanks to his close relationship with the government and not by innovation."

International Concern

The monopoly issue has drawn international attention:

• The U.S. State Department has criticized Mexico's telecommunications monopolies
• OECD reports have repeatedly highlighted the economic costs
• Trade negotiations (including NAFTA/USMCA) have addressed telecom competition
• International business media have extensively covered the controversy

Slim's Defense

Slim has defended his business practices, arguing:

• Telmex invested billions in modernizing Mexico's telecommunications infrastructure
• Telephone service expanded dramatically under his ownership
• México's telecom sector has created jobs and economic value
• His companies have complied with all applicable laws
• Market dominance reflects superior efficiency and service

However, these arguments have convinced few critics, who note that monopoly status - not superior performance - explains the market dominance.

Business Empire: Grupo Carso

Beyond telecommunications, Slim controls a vast business empire through Grupo Carso and related entities:

Telecommunications

• América Móvil - Latin America's largest telecom company
• Telmex - Mexican landline telephone company
• Telcel - Mexican mobile operator
• Claro - Brand used across Latin America

Retail

• Grupo Sanborns - Parent company for multiple retail chains
• Sanborns - Iconic Mexican restaurant, pharmacy, and retail chain (163 stores)
• Sears Mexico - Mexican operations of Sears department stores
• Mixup - Music and entertainment retail

Financial Services

• Grupo Financiero Inbursa - Banking, insurance, pension funds
• Seguros Inbursa - Insurance operations
• Afore Inbursa - Pension fund management

Industrial

• Grupo Carso - Holding company for industrial operations
• Carso Infrastructure and Construction - Major construction company
• Elementia - Cement and construction materials

Mining and Energy

• Minera Frisco - Gold, silver, and base metals mining
• Pemex drilling contracts - Oil drilling operations

Real Estate

• Inmobiliaria Carso - Real estate development and holdings
• Commercial properties throughout Mexico and internationally

Other Holdings

• CompUSA - Computer retail (former)
• The New York Times - 17.4% stake (acquired 2009, gradually reduced)
• Saks Fifth Avenue - Stake in luxury retailer
• Numerous other investments

The full scope of Slim's business empire is difficult to measure precisely, as holdings are distributed across multiple public and private companies, but estimates suggest his companies employ over 250,000 people.

Philanthropy

Despite criticism of his business practices, Slim has engaged in significant philanthropic activities:

Fundación Carlos Slim

Slim's primary philanthropic vehicle, Fundación Carlos Slim, focuses on:

• Health care: Programs addressing nutrition, disease prevention, and medical care
• Education: Scholarships, educational technology, vocational training
• Environmental conservation: Protecting natural areas and wildlife
• Cultural preservation: Supporting Mexican cultural heritage
• Sports promotion: Supporting athletics and youth sports

Museo Soumaya

The Museo Soumaya, built in memory of Slim's late wife, represents one of his most visible philanthropic contributions. Opened in 2011 in Plaza Carso, Mexico City, the museum:

• Houses over 66,000 works of art spanning 30 centuries
• Offers completely free admission (no entrance fee)
• Contains one of the world's largest collections of Rodin sculptures
• Features European old masters, Mexican art, and contemporary works
• Designed by Fernando Romero, Slim's son-in-law

The museum's distinctive asymmetric architecture has made it an iconic Mexico City landmark.

Telmex Foundation

The Telmex Foundation supports education and digital literacy programs throughout Latin America.

COVID-19 Response

During the COVID-19 pandemic, Slim's foundations contributed:

• Funding for vaccine distribution in Latin America
• Support for healthcare infrastructure
• Economic relief for small businesses
• Medical equipment and supplies

Criticism of Philanthropy

Some critics argue that Slim's philanthropic contributions, while substantial in absolute terms, are modest relative to his wealth, and that reducing monopolistic pricing would benefit Mexican society far more than charitable donations.

Personal Life and Characteristics

Lifestyle

Despite being one of the world's wealthiest individuals, Slim is known for a relatively modest lifestyle:

• Continues to live in the same house in the Lomas de Chapultepec neighborhood of Mexico City where he has resided for decades
• Drives himself in a modest car (though with security)
• Known for frugality in personal spending
• Works from a relatively modest office

However, he also owns:

• Valuable art collection worth hundreds of millions
• Multiple real estate properties
• Historic haciendas in Mexico

Work Ethic

Slim is famous for his intense work ethic:

• Typically works six days a week
• Maintains detailed financial records and spreadsheets personally
• Reads extensively about companies and industries
• Known for mastering complex details of all his businesses

Management Philosophy

Slim's business philosophy includes:

• Maintaining strong balance sheets and minimal debt
• Investing countercyclically during crises
• Focusing on long-term value rather than short-term profits
• Maintaining detailed financial records and analysis
• Keeping tight control over management decisions

Never Remarrying

Since Soumaya's death in 1999, Slim has never remarried or been publicly linked romantically to anyone else. Associates say he remains devoted to her memory and speaks of her regularly.

Children's Roles

All of Slim's children are involved in the family business empire:

• Carlos Slim Domit serves as chairman of Grupo Carso
• Marco Antonio runs Grupo Financiero Inbursa
• Patrick leads Inmobiliaria Carso
• His daughters oversee various cultural and philanthropic initiatives

This has ensured continuity and maintained the business within the family's control.

Controversies Beyond Monopoly

Political Connections

Slim has faced criticism for close relationships with Mexican political leaders across party lines, with critics alleging these relationships helped protect his business interests:

• Close relationship with President Carlos Salinas (who privatized Telmex)
• Connections to subsequent presidents across different political parties
• Alleged influence over regulatory decisions affecting his companies

Media Holdings

Slim's stake in The New York Times (17.4% at its peak, now reduced) and ownership of Mexican media properties raised concerns about:

• Potential influence over editorial content
• Conflicts of interest in coverage of Mexican business and politics
• Concentration of media power

Labor Relations

Some Slim companies have faced criticism regarding labor practices, including:

• Union disputes at various facilities
• Questions about worker compensation relative to Slim's wealth
• Workplace safety issues

Legacy and Impact

Carlos Slim Helú's legacy is deeply complex and controversial:

Positive Impact

• Expanded telecommunications access throughout Latin America
• Created hundreds of thousands of jobs
• Invested billions in infrastructure modernization
• Preserved and shared cultural treasures through Museo Soumaya
• Demonstrated the potential for Latin American business leaders to compete globally

Negative Impact

• Monopolistic practices cost Mexican economy tens of billions of dollars
• High telecommunications prices harmed consumers and economic development
• Market dominance stifled competition and innovation
• Wealth concentration contributed to Mexico's inequality problem

Historical Significance

Regardless of one's view of his business practices, Slim's significance is undeniable:

• Built one of the world's great fortunes starting from Mexico
• Demonstrated the wealth-building potential of contrarian investing during crises
• Created a business empire spanning multiple industries and countries
• Served as world's richest person for four years
• Became symbol of both entrepreneurial success and monopolistic capitalism

At 85 years old, Slim remains actively involved in his business empire, though his children increasingly manage day-to-day operations. His story - from the son of Lebanese immigrants to the world's richest person - represents both the opportunities and controversies of Latin American capitalism in the late 20th and early 21st centuries.

See Also

• Grupo Carso
• América Móvil
• Telmex
• Monopoly
• Mexican billionaires

External Links

• Carlos Slim Official Website
• América Móvil Official Website
• Fundación Carlos Slim
• Museo Soumaya