Visa vs Mastercard vs Amex: Ownership and Structure

Every time you tap your card, a toll gets collected. Between 1.5% and 3.5% of that purchase flows to banks and the payment network, and in the first half of 2026 alone, US cards ran 86.94 billion purchase transactions, up 6.7% year over year per the Nilson Report.

Visa, Mastercard, and American Express sit at the center of that toll system. But they are not three versions of the same business. Two are pure networks that never lend a dime. One is a lender, a network, and a brand all at once. And each has a completely different ownership story.

We pulled the filings and shareholder data on all three. Here is who owns the card networks, and why their structures matter.

The Card Network Oligopoly

US card purchase volume ran about $6.1 trillion in 2024 and keeps climbing. By US purchase volume, Visa holds roughly 52%, Mastercard about 25%, American Express near 19.5%, and Discover about 3.5%. Globally, Visa and Mastercard together process around 80% of card transactions outside China, where UnionPay dominates.

Visa and Mastercard are the duopoly. Amex is the premium challenger. Discover, since its May 2025 acquisition by Capital One, is the wildcard now being folded into a bank's strategy.

The origins explain the structures. Bank of America launched BankAmericard in 1958, franchising it to other banks in 1966, and the bank consortium eventually became Visa in 1976. A rival bank group formed the Interbank Card Association in 1966, which became Mastercard. American Express launched its own card the same year, 1958, but as a single company that would issue and process everything itself. Sixty-plus years later, those founding choices still define all three.

Visa: The Pure Network

Visa Inc. (NYSE: V) processed roughly $17 trillion in total volume last year across 4.48 billion cards and about 257.5 billion annual transactions. Visa does not issue cards. It does not lend money. It does not take credit risk. It operates the plumbing and collects a small fee on nearly every swipe on Earth.

That model produces absurd economics. Gross margin near 78%, operating margin around 67%, net margin near 50%. Visa carries roughly $24 billion in cash and sits net cash positive. For scale, Visa generated over $20 billion in free cash flow on about $41 billion of revenue.

Ownership-wise, Visa began as a bank consortium, BankAmericard's network, before restructuring. Its March 2008 IPO raised approximately $17.9 billion, the largest US IPO in history at that point. Today it is widely held: Vanguard, BlackRock, and State Street are the top holders, one vote per share, no controlling interest.

Mastercard: The High-Return Challenger

Mastercard Incorporated (NYSE: MA) is the smaller of the two networks but arguably the more aggressive business. It moves about $11 trillion in annual volume across 3.16 billion cards and 160 billion transactions, taking roughly 25% of US purchase volume.

The standout number is return on equity: approximately 210%. That figure is partly engineered. Mastercard has run aggressive debt-funded buybacks for years, shrinking the equity base faster than it grows. Gross margin runs near 96%, operating margin near 58%, net margin around 44%, and free cash flow is roughly $15 billion on $33 billion of revenue.

Mastercard also came out of a bank consortium, going public in May 2006. Like Visa, it is one-share-one-vote with no controlling shareholder and a heavily institutional register.

American Express: The Closed Loop

American Express (NYSE: AXP) is structurally different. It is the network and the lender. Amex issues its own cards, holds the receivables, earns interest on balances, and captures the entire transaction economics instead of sharing it with issuing banks.

That closed loop produces different numbers. Revenue runs about $80.5 billion on a trailing basis because interest income counts as revenue, but margins are much thinner: roughly 60% gross, 20% operating, 13% net. Amex has 127.6 million cards running about 9 billion transactions a year, a fraction of Visa's count. Yet its average transaction is $155 against Visa's $93, because Amex targets premium, high-spend cardholders.

The ownership detail everyone cites: Berkshire Hathaway is the largest shareholder at roughly 21%. Buffett bought in during the 1960s salad oil scandal and has held for six decades. Important caveat: Berkshire does not control Amex and it is not a subsidiary. It is simply a very large, very patient shareholder. Vanguard and BlackRock follow behind.

Open-Loop vs Closed-Loop

This is the structural divide worth understanding:

• Open-loop networks (Visa, Mastercard): Pure networks. Issuing banks like JPMorgan Chase and Bank of America carry the credit risk and lend the money. The network charges scheme fees on every transaction and never touches a balance sheet.
• Closed-loop network (Amex): The company is issuer, lender, and network in one. It keeps all the economics but also absorbs all the credit losses.

The fee structure follows. Merchants pay roughly 1.43% to 2.4% on Visa transactions and 1.55% to 2.6% on Mastercard. Amex charges 2.5% to 3.5%, the main reason its acceptance is narrower. Small merchants drop Amex first; affluent customers keep it anyway.

The Financial Comparison

Sources: company filings, Nilson Report midyear 2026, WalletHub network data.

Amex's $16 billion of free cash flow on $80 billion of revenue looks weak next to Visa's 55% FCF margin until you remember Amex is running a bank alongside the network. Capital intensity is the price of keeping the whole economics of each swipe.

The Ownership Structures

Two of the three were born as bank cooperatives. Visa and Mastercard spent decades owned by the banks that used them, then converted to public companies in 2008 and 2006 respectively. The member banks got shares, the networks got independence, and the clearing-hotel structure became a profit machine.

American Express went the other way. Founded in 1850 as an express mail company, it has been independent and publicly traded for its entire modern life. Its most consequential shareholder relationship is Berkshire's 21% stake, a 60-year position that signals endorsement without control.

All three are single-class today. The oligopoly answers to the market, not to founders or families.

Where the Duopoly Cracks

The Visa-Mastercard duopoly is one of the most concentrated two-player structures in any major global industry. Regulators know it. The US Department of Justice sued Visa over debit practices, and interchange fee litigation has run for two decades. Capital One's purchase of Discover was partly a bet that owning a network end-to-end could break the duopoly's toll booth, the same logic Amex has always run.

Watch the closed-loop math. If Capital One successfully moves its debit and credit volume onto Discover's rails, the duopoly share starts leaking. That is a multi-year story, but it is the first credible structural challenge in decades. We covered the broader industry in who owns the credit card industry.

Globally there is a fourth player worth naming: UnionPay, the Chinese state-backed network, which leads the world in purchase volume thanks to China's domestic market. Outside China, though, it barely registers. The Visa-Mastercard duopoly is a feature of the open markets, not the closed ones.

What This Means for Brand Ownership

Visa, Mastercard, and Amex are three distinct ownership stories. Visa is the pure network at maximum scale, net cash positive, widely held. Mastercard is the pure network at maximum capital efficiency, juiced by buybacks. Amex is the vertically integrated premium player with Berkshire Hathaway as its anchor shareholder.

Two were spun out of bank consortia. One was independent all along. None answers to a controlling owner, which is worth remembering next time someone claims a shadowy family runs the payments system. For more on how financial brands consolidate, read our Uber vs Lyft ownership comparison or browse finance brands in the database.

Frequently Asked Questions

Who owns Visa? Visa Inc. (NYSE: V) is a widely held public company with no controlling shareholder. Vanguard, BlackRock, and State Street are the largest holders. It was owned by a bank consortium until its record $17.9 billion IPO in March 2008.

Who owns Mastercard? Mastercard (NYSE: MA) is also widely held with a single share class. It spun out of a bank consortium via a May 2006 IPO. Institutional index funds are the largest shareholders.

Does Berkshire Hathaway own American Express? Berkshire holds roughly 21% of American Express, making it the largest shareholder, but this is a non-controlling stake. Amex is an independent public company, not a Berkshire subsidiary.

What is the difference between open-loop and closed-loop card networks? Visa and Mastercard run open loops: third-party banks issue cards and carry credit risk. Amex runs a closed loop where it is both issuer and network, keeping all fees but absorbing all credit losses.

The Bottom Line

The card war looks like a three-way race but is really two business models. Two bank-born networks collect tolls on other people's money. One premium closed loop does everything itself. Ownership explains which is which.

Want to check who owns the card in your wallet? Look up Visa, Mastercard, or Capital One in our database.

Explore Related Brands

• Visa - Largest card network, owned by public shareholders of Visa Inc.
• Mastercard - Second-largest network, owned by public shareholders of Mastercard Inc.
• Discover - Card network now owned by Capital One
• Capital One - Bank and issuer that acquired Discover in 2025
• Kirkland Signature - Costco's store brand with a Visa co-branded card

Browse all finance and fintech brands →

Sources

1. Nilson Report. "US Card Networks at Midyear 2026." Issue 1313, 2026 2. WalletHub. "Credit Card Market Share by Network (2026)." wallethub.com 3. Visa Inc. "Form 10-K, Fiscal Year 2025." sec.gov 4. Mastercard Incorporated. "Form 10-K, Fiscal Year 2025." sec.gov 5. American Express Company. "Form 10-K, Fiscal Year 2025." sec.gov 6. Berkshire Hathaway. "Form 13F Holdings." sec.gov

All brand ownership data verified through WhoBrands.com's research methodology. Last updated: October 16, 2026.