$416 Billion Across BordersWide moat

Citigroup (C) — moat facet

Citi moves a rising stream of other companies' foreign-exchange payments, and the stream is the moat.

The clearest evidence of the Services moat is the traffic on it. Citi counts the total value of cross-border foreign-exchange payments processed through its own platforms, and the series rose from $279.5 billion in 2021 to $311.6 billion, $358.0 billion, $379.7 billion and $416.4 billion in 20251, a rise of about 49% in four years2. The second quarter of 2026 added $115 billion, up 13% on a year earlier3.

Cross-border transaction value ($bn)279.52021311.62022358.02023379.72024416.42025Citigroup historical supplement, 3 April 2026 (8-K exhibit 99.1)
Up about half in four years.

The dollar-clearing count tells the same story from another angle. Citi processed 146.2 million U.S. dollar clearing instructions in 2021 and 177.1 million in 20254, about 21% more5. Commercial card spend went from $38.6 billion to $71.2 billion over the same years6.

Why does volume on a network become a moat? A company paying suppliers in thirty currencies wants one bank that can move the money, hedge the currency and report the balance the same day. Citi's Services business offers products in over 90 countries7, and building that list of local licences, clearing links and branches is the work of decades. A rival can win a single corridor; it is much harder to win the whole map.

Other traffic measures rose too. Commercial card spend on Citi-issued corporate cards was $20 billion in the second quarter of 2026, up 12%8. Citi's Investor Day put the growth of cross-border transaction value at about 10% a year since 20229.

The flow was higher in the fourth quarter of 2025 than in any quarter since at least 2024. Cross-border transaction value was $90.7 billion in the first quarter of 2024 and $115.2 billion in the fourth quarter of 202510, and $115 billion again in the second quarter of 202611.

The first quarter of 2026 brought $106 billion12.

The figures here are Citi's own, reported in its supplement, and they measure throughput rather than price. Should the annual cross-border value stop growing for a full year while world trade kept expanding, the network would be losing flow to someone else's rails.

Moat trajectory: Widening

Cross-border value $279.5bn (2021) to $416.4bn (2025).

The number that tests this moat
Reported
Cross-border transaction value, latest quarter
$115bn (Q2 2026), up 13% year on year

Flow through Citi's payment rails; a year of no growth while trade grew would mean clients were moving flow elsewhere.

Source: Citigroup Q2 2026 earnings release, institutional businesses ↗
⚠ Threats to the moat
⚠ THREAT 01
Volume Grew Faster Than Fees
Citi's payment volume grew by half and its payment fees by little more than a quarter.
References
  1. ReportedCiti counts the total value of cross-border foreign-exchange payments processed through its own platforms, and the series rose from $279.5 billion in 2021 to $311.6 billion, $358.0 billion, $379.7 billion and $416.4 billion in 2025, a rise of about 49% in four years.
    Citigroup Historical Quarterly Financial Data Supplement 2021-2025 recast to the first-quarter 2026 segments - Services: revenue by line and type, geography, deposits, loans, cross-border transaction value, clearing volume, custody assets and returns. — FY2021-FY2025 · publ. 3 April 2026 · source ↗
  2. Moat Explorer calcCiti counts the total value of cross-border foreign-exchange payments processed through its own platforms, and the series rose from $279.5 billion in 2021 to $311.6 billion, $358.0 billion, $379.7 billion and $416.4 billion in 2025, a rise of about 49% in four years.
    Moat Explorer calculation from Citigroup segment figures ($ millions unless stated; calendar years; segments as restated in the 8-K of 3 April 2026). Services: cross-border transaction value 416.4 / 279.5 - 1 = 49.0%, about half; U.S. dollar clearing 177.1 / 146.2 - 1 = 21.1%; fee revenue 6,385 / 4,967 - 1 = 28.5%, about 29%; net interest income 15,001 / 6,866 = 2.18 times, about 2.2; NII share 15,001 / 22,636 = 66.3%, about 66%; revenue 22,636 / 12,539 - 1 = 80.5%, about 81%; TTS 16,646 / 9,187 - 1 = 81.2%; Securities Services 5,990 / 3,352 - 1 = 78.7%, about 79%; Securities Services revenue over assets under custody 5,990 / 31,400,000 = 0.019%, about 1.9 hundredths of a percent; international share 15,729 / 22,636 = 69.5%, about 69%; share of Citi revenue 22,636 / 85,225 = 26.6%, about 27% (2025), 12,539 / 71,574 = 17.5%, about 18% (2021). Deposits: year-end 1,308,681 / 1,365,954 - 1 = -4.2%, about 4%. U.S. Consumer Cards: revenue 18,258 / 13,209 - 1 = 38.2%, about 38%; net interest income over average loans 20,169 / 170,000 = 11.9%, about 12 cents per dollar; Q2 2026 net credit losses over net interest income 1,850 / 5,180 = 35.7%, about 36%, more than a third; share of Citi revenue 18,258 / 85,225 = 21.4%, about 21%. Markets: rates and currencies 11,749 / 22,409 = 52.4%, about 52%; fixed income 16,745 / 22,409 = 74.7%, about 75%; international 14,020 / 22,409 = 62.6%, about 63%; revenue 18,888 / 20,401 - 1 = -7.4%, about 7%; net income 4,059 / 6,148 - 1 = -34.0%, about a third; revenue 22,409 / 19,108 - 1 = 17.3%, about 17%; share of Citi revenue 22,409 / 85,225 = 26.3%, about 26%. Allocated average TCE 2025 ($bn): Services 33.0 + Markets 53.5 + Banking 9.2 + Wealth 15.4 + U.S. Consumer Cards 20.3 + All Other 39.2 = 170.6; Markets 53.5 / 170.6 = 31.4%, about 31%; All Other 39.2 / 170.6 = 23.0%, about 23%, nearly a quarter. Banking: corporate lending and other 6,384 - 4,618 = 1,766, about $1,766 million; share of Citi revenue 6,384 / 85,225 = 7.5%. Wealth: Citigold and Retail Banking 7,666 / 11,272 = 68.0%, about 68%; Wealth at Work 930 / 11,272 = 8.3%, about 8%; revenue 11,272 / 9,871 - 1 = 14.2%, about 14%; 11,272 / 9,733 - 1 = 15.8%, about 16%; share of Citi revenue 11,272 / 85,225 = 13.2%, about 13%. All Other: revenue on the chart basis 4,442 managed + (176) reconciling items = 4,266 (2025); 9,491 - 670 = 8,821 (2021); 8,841 + 854 = 9,695 (2022); 9,389 + 1,346 = 10,735 (2023); 7,521 + 26 = 7,547 (2024); Corporate/Other 4,442 - 5,512 Legacy Franchises = -1,070, about minus $1,070 million. Further: All Other chart basis 4,266 / 8,821 = 0.48, about half; Banking 2025 income new basis 935 / old basis 2,324 = 0.40, so 60% less, about three-fifths; Mexico consumer and small business 6,500 / 4,539 - 1 = 43.2%, about 43%; U.S. card loans 170 / 409 consumer loans = 41.6%, about two-fifths; card loans excluding the American Airlines purchase (177 - 168 - 6.6) / 168 = 1.4%; Q1 2026 card net credit losses over net interest income 1,742 / 5,116 = 34.0%, about 34%; Q2 2026 equities over fixed income 2,301 / 4,706 = 0.49, about half; investment banking fees 4,618 / 2,713 - 1 = 70.2%, about 70%; Citigold (old basis) 4,953 / 3,803 - 1 = 30.2%, about 30%; net new investment assets first half 2026 15 + 16 = 31 billion; Wealth Q2 2026 efficiency 2,377 / 3,177 = 74.8%, about 75%; Securities Services 5,990 / 5,165 - 1 = 16.0%, about 16%. More: commercial card spend 71.2 / 38.6 - 1 = 84.5%, about 84%; advisory share of investment banking fees 1,908 / 4,618 = 41.3%, about 41%; advisory share of Q2 2026 investment banking revenue 390 / 1,548 = 25.2%, about 25%; BlackRock mandate 80 / 670 investment assets = 11.9%, roughly 12%; rewards and partner payments over interchange 12,075 / 9,718 = 1.24 times; new card accounts 5,376 / 2,942 - 1 = 82.7%, about 83%. Five-business income from continuing operations 2025: 8,187 + 6,265 + 935 + 1,178 + 3,409 = 19,974; Services 8,187 / 19,974 = 41.0%, about 41%, more than two-fifths. — FY2021-Q2 2026 · publ. September 2026 · source ↗
    Method: Arithmetic on figures reported in Citigroup's recast historical supplement, Forms 10-K and 10-Q and its Q2 2026 earnings release; operands shown in the source line.
  3. ReportedThe second quarter of 2026 added $115 billion, up 13% on a year earlier.
    Citigroup second-quarter 2026 earnings release, Form 8-K exhibit 99.1 - Services, Markets and Banking results and key metrics. — Q2 2026 · publ. 14 July 2026 · source ↗
  4. ReportedCiti processed 146.2 million U.S. dollar clearing instructions in 2021 and 177.1 million in 2025, about 21% more.
    Citigroup Historical Quarterly Financial Data Supplement 2021-2025 recast to the first-quarter 2026 segments - Services: revenue by line and type, geography, deposits, loans, cross-border transaction value, clearing volume, custody assets and returns. — FY2021-FY2025 · publ. 3 April 2026 · source ↗
  5. Moat Explorer calcCiti processed 146.2 million U.S. dollar clearing instructions in 2021 and 177.1 million in 2025, about 21% more.
    Moat Explorer calculation from Citigroup segment figures ($ millions unless stated; calendar years; segments as restated in the 8-K of 3 April 2026). Services: cross-border transaction value 416.4 / 279.5 - 1 = 49.0%, about half; U.S. dollar clearing 177.1 / 146.2 - 1 = 21.1%; fee revenue 6,385 / 4,967 - 1 = 28.5%, about 29%; net interest income 15,001 / 6,866 = 2.18 times, about 2.2; NII share 15,001 / 22,636 = 66.3%, about 66%; revenue 22,636 / 12,539 - 1 = 80.5%, about 81%; TTS 16,646 / 9,187 - 1 = 81.2%; Securities Services 5,990 / 3,352 - 1 = 78.7%, about 79%; Securities Services revenue over assets under custody 5,990 / 31,400,000 = 0.019%, about 1.9 hundredths of a percent; international share 15,729 / 22,636 = 69.5%, about 69%; share of Citi revenue 22,636 / 85,225 = 26.6%, about 27% (2025), 12,539 / 71,574 = 17.5%, about 18% (2021). Deposits: year-end 1,308,681 / 1,365,954 - 1 = -4.2%, about 4%. U.S. Consumer Cards: revenue 18,258 / 13,209 - 1 = 38.2%, about 38%; net interest income over average loans 20,169 / 170,000 = 11.9%, about 12 cents per dollar; Q2 2026 net credit losses over net interest income 1,850 / 5,180 = 35.7%, about 36%, more than a third; share of Citi revenue 18,258 / 85,225 = 21.4%, about 21%. Markets: rates and currencies 11,749 / 22,409 = 52.4%, about 52%; fixed income 16,745 / 22,409 = 74.7%, about 75%; international 14,020 / 22,409 = 62.6%, about 63%; revenue 18,888 / 20,401 - 1 = -7.4%, about 7%; net income 4,059 / 6,148 - 1 = -34.0%, about a third; revenue 22,409 / 19,108 - 1 = 17.3%, about 17%; share of Citi revenue 22,409 / 85,225 = 26.3%, about 26%. Allocated average TCE 2025 ($bn): Services 33.0 + Markets 53.5 + Banking 9.2 + Wealth 15.4 + U.S. Consumer Cards 20.3 + All Other 39.2 = 170.6; Markets 53.5 / 170.6 = 31.4%, about 31%; All Other 39.2 / 170.6 = 23.0%, about 23%, nearly a quarter. Banking: corporate lending and other 6,384 - 4,618 = 1,766, about $1,766 million; share of Citi revenue 6,384 / 85,225 = 7.5%. Wealth: Citigold and Retail Banking 7,666 / 11,272 = 68.0%, about 68%; Wealth at Work 930 / 11,272 = 8.3%, about 8%; revenue 11,272 / 9,871 - 1 = 14.2%, about 14%; 11,272 / 9,733 - 1 = 15.8%, about 16%; share of Citi revenue 11,272 / 85,225 = 13.2%, about 13%. All Other: revenue on the chart basis 4,442 managed + (176) reconciling items = 4,266 (2025); 9,491 - 670 = 8,821 (2021); 8,841 + 854 = 9,695 (2022); 9,389 + 1,346 = 10,735 (2023); 7,521 + 26 = 7,547 (2024); Corporate/Other 4,442 - 5,512 Legacy Franchises = -1,070, about minus $1,070 million. Further: All Other chart basis 4,266 / 8,821 = 0.48, about half; Banking 2025 income new basis 935 / old basis 2,324 = 0.40, so 60% less, about three-fifths; Mexico consumer and small business 6,500 / 4,539 - 1 = 43.2%, about 43%; U.S. card loans 170 / 409 consumer loans = 41.6%, about two-fifths; card loans excluding the American Airlines purchase (177 - 168 - 6.6) / 168 = 1.4%; Q1 2026 card net credit losses over net interest income 1,742 / 5,116 = 34.0%, about 34%; Q2 2026 equities over fixed income 2,301 / 4,706 = 0.49, about half; investment banking fees 4,618 / 2,713 - 1 = 70.2%, about 70%; Citigold (old basis) 4,953 / 3,803 - 1 = 30.2%, about 30%; net new investment assets first half 2026 15 + 16 = 31 billion; Wealth Q2 2026 efficiency 2,377 / 3,177 = 74.8%, about 75%; Securities Services 5,990 / 5,165 - 1 = 16.0%, about 16%. More: commercial card spend 71.2 / 38.6 - 1 = 84.5%, about 84%; advisory share of investment banking fees 1,908 / 4,618 = 41.3%, about 41%; advisory share of Q2 2026 investment banking revenue 390 / 1,548 = 25.2%, about 25%; BlackRock mandate 80 / 670 investment assets = 11.9%, roughly 12%; rewards and partner payments over interchange 12,075 / 9,718 = 1.24 times; new card accounts 5,376 / 2,942 - 1 = 82.7%, about 83%. Five-business income from continuing operations 2025: 8,187 + 6,265 + 935 + 1,178 + 3,409 = 19,974; Services 8,187 / 19,974 = 41.0%, about 41%, more than two-fifths. — FY2021-Q2 2026 · publ. September 2026 · source ↗
    Method: Arithmetic on figures reported in Citigroup's recast historical supplement, Forms 10-K and 10-Q and its Q2 2026 earnings release; operands shown in the source line.
  6. ReportedCommercial card spend went from $38.6 billion to $71.2 billion over the same years.
    Citigroup Historical Quarterly Financial Data Supplement 2021-2025 recast to the first-quarter 2026 segments - Services: revenue by line and type, geography, deposits, loans, cross-border transaction value, clearing volume, custody assets and returns. — FY2021-FY2025 · publ. 3 April 2026 · source ↗
  7. ReportedCiti's Services business offers products in over 90 countries, and building that list of local licences, clearing links and branches is the work of decades.
    Citigroup Form 10-K for fiscal 2025 - business description, segments, history, footprint, employees and executives. — FY2025 · publ. 20 February 2026 · source ↗
  8. ReportedCommercial card spend on Citi-issued corporate cards was $20 billion in the second quarter of 2026, up 12%.
    Citigroup second-quarter 2026 earnings release, Form 8-K exhibit 99.1 - Services, Markets and Banking results and key metrics. — Q2 2026 · publ. 14 July 2026 · source ↗
  9. ReportedCiti's Investor Day put the growth of cross-border transaction value at about 10% a year since 2022.
    Citigroup 2026 Investor Day financial overview presentation - RoTCE targets, business targets for Services, Cards and Markets, efficiency ratio, transformation, liquidity and capital. — May 2026 · publ. May 2026 · source ↗
  10. ReportedCross-border transaction value was $90.7 billion in the first quarter of 2024 and $115.2 billion in the fourth quarter of 2025, and $115 billion again in the second quarter of 2026.
    Citigroup Historical Quarterly Financial Data Supplement 2021-2025 recast to the first-quarter 2026 segments - Services: revenue by line and type, geography, deposits, loans, cross-border transaction value, clearing volume, custody assets and returns. — FY2021-FY2025 · publ. 3 April 2026 · source ↗
  11. ReportedCross-border transaction value was $90.7 billion in the first quarter of 2024 and $115.2 billion in the fourth quarter of 2025, and $115 billion again in the second quarter of 2026.
    Citigroup second-quarter 2026 earnings release, Form 8-K exhibit 99.1 - Services, Markets and Banking results and key metrics. — Q2 2026 · publ. 14 July 2026 · source ↗
  12. ReportedThe first quarter of 2026 brought $106 billion.
    Citigroup second-quarter 2026 earnings release, Form 8-K exhibit 99.1 - Services, Markets and Banking results and key metrics. — Q2 2026 · publ. 14 July 2026 · source ↗
Sources
Generated September 28, 2026