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MarketAxess Announces Trading Volume Statistics for May 2025

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44% Increase in Total ADV Driven by 22% Increase in Total Credit ADV and 59% Increase in Total Rates ADV

Record Eurobonds ADV of $2.9 Billion on 116% Increase in Block Trading and 500% Increase in Portfolio Trading ADV

NEW YORK--(BUSINESS WIRE)-- MarketAxess Holdings Inc. (Nasdaq: MKTX), the operator of a leading electronic trading platform for fixed-income securities, today announced trading volume and preliminary variable transaction fees per million (“FPM�) for May 2025.1

Select May 2025 Highlights* (See tables 1-1C and table 2)

  • The MarketAxess platform’s strong performance persisted in May through moderated levels of volatility, providing our clients with deep liquidity through Open Trading.
  • We delivered strong progress with our new initiatives across the client-initiated, portfolio trading and dealer-initiated channels that contributed to the strong performance in May.

Client-Initiated

  • Strong increases in block trading ADV across U.S. credit (+41%), emerging markets (+24%) and eurobonds (+116%). We launched our targeted block trading solution in U.S. credit in mid-May.
    • Block trading in emerging markets and eurobonds both benefitted from the launch of our targeted block solution in late 2024, which has generated cumulative trading volume of approximately $1.7 billion and $2.7 billion, respectively, since launch.
  • Clients continued to leverage our algos in U.S. government bond trading, helping to drive a 57% increase in ADV to $28.3 billion with estimated market share of 2.6% in May.

Portfolio Trading

  • Year-to-date May 2025, estimated market share of U.S. credit portfolio trading is 18.6%, compared to 14.1% in the prior year same period, an increase of approximately 450 basis points.2
    • 90% of all portfolio trading ADV was executed over X-Pro in May.

Dealer-Initiated

  • Dealer-initiated ADV increased 41% to $1.8 billion.

May 2025 Variable Transaction Fees Per Million1 (See table 1D)

  • The decline in total credit FPM compared to the prior year was driven principally by protocol mix. Total credit FPM was flat month-over-month.
  • The decline in total rates FPM compared to the prior year was driven by the impact of product mix. Total rates FPM was down slightly month-over-month.

*All comparisons versus May 2024 unless noted.

Table 1: MarketAxess ADV3

Month % Change
May-25 Apr-25 May-24 YoY MoM
MKTX ADV ($ millions)
Credit
U.S. High-Grade

$

7,649

$

8,595

$

6,122

25

%

(11

)

%

U.S. High-Yield

Ìý

1,602

Ìý

1,968

Ìý

1,320

21

(19

)

Emerging Markets

Ìý

3,615

Ìý

4,273

Ìý

3,074

18

(15

)

Eurobonds

Ìý

2,870

Ìý

2,785

Ìý

2,274

26

3

Ìý

Other Credit Products3

Ìý

612

Ìý

739

Ìý

582

5

(17

)

Municipal Bonds

Ìý

611

Ìý

737

Ìý

577

6

(17

)

Total MKTX Credit ADV

$

16,348

$

18,360

$

13,372

22

(11

)

Rates
U.S. Government Bonds

$

28,293

$

37,935

$

18,072

57

%

(25

)

%

Agencies and Other Government Bonds

Ìý

1,589

Ìý

1,141

Ìý

728

118

39

Ìý

Total MKTX Rates ADV

$

29,882

$

39,076

$

18,800

59

(24

)

Total MKTX Trading ADV

$

46,230

$

57,436

$

32,172

44

(20

)

Ìý
U.S. Trading Days4

Ìý

21

Ìý

21

Ìý

22

U.K. Trading Days4

Ìý

19

Ìý

20

Ìý

20

Table 1A: Market ADV

Month % Change
May-25 Apr-25 May-24 YoY MoM
MARKET ADV ($ millions)
Credit
U.S. High-Grade TRACE

$

39,652

$

44,647

$

32,864

21

%

(11

)

%

U.S. High-Yield TRACE

Ìý

13,171

Ìý

14,565

Ìý

10,313

28

(10

)

Total U.S. Credit TRACE

Ìý

52,823

Ìý

59,212

Ìý

43,177

22

(11

)

Municipal Bonds MSRB

Ìý

10,306

Ìý

15,427

Ìý

7,123

45

(33

)

Ìý
Rates
U.S. Government Bonds TRACE

$

1,106,252

$

1,354,981

$

830,586

33

%

(18

)

%

Agency TRACE

Ìý

4,032

Ìý

4,064

Ìý

2,982

35

(1

)

Ìý
U.S. Trading Days4

Ìý

21

Ìý

21

Ìý

22

U.K. Trading Days4

Ìý

19

Ìý

20

Ìý

20

Table 1B: Estimated Market Share5

Month Bps Change
May-25 Apr-25 May-24 YoY MoM
MKTX ESTIMATED MARKET SHARE (%)

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

U.S. High-Grade

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

% of U.S. High-Grade TRACE (incl. SD PT)5

19.9%

19.4%

19.2%

+70

bps

+50

bps

% of U.S. High-Grade TRACE (excl. SD PT)5

19.3%

19.3%

18.6%

+70

bps

�

bps

U.S. High-Yield

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

% of U.S. High-Yield TRACE (incl. SD PT)5

12.4%

14.1%

13.1%

(70)

bps

(170)

bps

% of U.S. High-Yield TRACE (excl. SD PT)5

12.2%

13.5%

12.8%

(60)

bps

(130)

bps

Other Credit Products

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

% of Municipal Bonds MSRB

5.9%

4.8%

8.1%

(220)

bps

+110

bps

Rates

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

% of U.S. Government Bonds TRACE

2.6%

2.8%

2.2%

+40

bps

(20)

bps

Table 1C: Strategic Priorities ADV2

Month % Change
May-25 Apr-25 May-24 YoY MoM
STRATEGIC PRIORITIES ADV ($ millions)
Client-Initiated Channel
U.S. Credit Block Trading

$

3,070

$

3,751

$

2,182

41

%

(18

)

%

Emerging Markets Block Trading

Ìý

1,451

Ìý

1,579

Ìý

1,173

24

(8

)

Eurobonds Block Trading

Ìý

637

Ìý

497

Ìý

294

116

28

Ìý

Portfolio Trading Channel
Total MKTX Portfolio Trading2

$

1,455

$

1,790

$

853

71

%

(19

)

%

Total MKTX U.S. Credit Portfolio Trading2

Ìý

1,014

Ìý

1,441

Ìý

734

38

(30

)

Total U.S. Credit TRACE Portfolio Trading2

Ìý

6,041

Ìý

7,349

Ìý

4,164

45

(18

)

Dealer-Initiated Channel
Total Dealer Initiated (DRFQ & Mid-X)

$

1,781

$

1,916

$

1,260

41

%

(7

)

%

Other
Open Trading

$

4,777

$

5,739

$

3,924

22

%

(17

)

%

AxessIQ

Ìý

189

Ìý

181

Ìý

138

37

4

Ìý

Ìý
U.S. Trading Days4

Ìý

21

Ìý

21

Ìý

22

U.K. Trading Days4

Ìý

19

Ìý

20

Ìý

20

Table 1D: Variable Transaction Fees Per Million (FPM)1

Month % Change
May-25 Apr-25 May-24 YoY MoM
AVG. VARIABLE TRANS. FEE PER MILLION (FPM)
Total Credit

$

138

$

138

$

148

(7

)

%

0

Ìý

%

Total Rates

Ìý

3.75

Ìý

3.76

Ìý

4.40

(15

)

(0

)

1 The FPM for total credit and total rates for May 2025 are preliminary and may be revised in subsequent updates and public filings. The Company undertakes no obligation to update any fee information in future press releases.

2 Due to variances in how portfolio trading market participants utilized the portfolio trading TRACE “flag,� the Company previously used its own internal methodology for calculating portfolio trading as an estimated percentage of TRACE volume and the Company’s estimated market share. Starting in June 2024, the Company utilized the portfolio trading TRACE flag in its reported portfolio trading TRACE volume and the Company’s portfolio trading estimated market share.

3 “Other Credit Products� includes municipal bonds, leveraged loans, convertible bonds and structured products.

4 The number of U.S. trading days is based on the SIFMA holiday recommendation calendar and the number of U.K. trading days is based primarily on the U.K. Bank holiday schedule.

5 “SD PT� is defined as single-dealer portfolio trades. The Company is currently highlighting the impact of single-dealer portfolio trading volume on U.S. high-grade and U.S. high-yield trading volume and estimated market share, but will continue to exclude single-dealer portfolio trading activity from each product’s aggregated trading volume and estimated market share and the total credit FPM calculation.

General Notes Regarding the Data Presented

Reported MarketAxess volume in all product categories includes only fully electronic trading volume. MarketAxess trading volumes and the Financial Industry Regulatory Authority (“FINRA�) Trade Reporting and Compliance Engine (“TRACE�) reported volumes are available on the Company’s website at .

Cautionary Note Regarding Forward-Looking Statements

This press release may contain forward-looking statements, including statements about the outlook and prospects for the Company, market conditions and industry growth, as well as statements about the Company’s future financial and operating performance. These and other statements that relate to future results and events are based on MarketAxess� current expectations. The Company’s actual results in future periods may differ materially from those currently expected or desired because of a number of risks and uncertainties, including: global economic, political and market factors; the level of trading volume transacted on the MarketAxess platform; the rapidly evolving nature of the electronic financial services industry; the level and intensity of competition in the fixed-income electronic trading industry and the pricing pressures that may result; the variability of our growth rate; our ability to introduce new fee plans and our clients� response; our ability to attract clients or adapt our technology and marketing strategy to new markets; risks related to our growing international operations; our dependence on our broker-dealer clients; the loss of any of our significant institutional investor clients; our exposure to risks resulting from non-performance by counterparties to transactions executed between our clients in which we act as an intermediary in matched principal trades; risks related to self-clearing; risks related to sanctions levied against states or individuals that could expose us to operational or regulatory risks; the effect of rapid market or technological changes on us and the users of our technology; issues related to the development and use of artificial intelligence; our dependence on third-party suppliers for key products and services; our ability to successfully maintain the integrity of our trading platform and our response to system failures, capacity constraints and business interruptions; the occurrence of design defects, errors, failures or delays with our platforms, products or services; our vulnerability to malicious cyber-attacks and attempted cybersecurity breaches; our actual or perceived failure to comply with privacy and data protection laws; our ability to protect our intellectual property rights or technology and defend against intellectual property infringement or other claims; our use of open-source software; our ability to enter into strategic alliances and to acquire other businesses and successfully integrate them with our business; our dependence on our management team and our ability to attract and retain talent; limitations on our flexibility because we operate in a highly regulated industry; the increasing government regulation of us and our clients; risks related to the divergence of U.K. and European Union legal and regulatory requirements following the U.K.’s exit from the European Union; our exposure to costs and penalties related to our extensive regulation; our risks of litigation and securities laws liability; our tax filing positions; the effects of climate change or other sustainability risks that could affect our operations or reputation; our future capital needs and our ability to obtain capital when needed; limitations on our operating flexibility contained in our credit agreement; our exposure to financial institutions by holding cash in excess of federally insured limits; and other factors. The Company undertakes no obligation to update any forward-looking statements, whether as a result of new information, future events or otherwise. More information about these and other factors affecting MarketAxess� business and prospects is contained in MarketAxess� periodic filings with the Securities and Exchange Commission and can be accessed at .

About MarketAxess

MarketAxess (Nasdaq: MKTX) operates a leading electronic trading platform that delivers greater trading efficiency, a diversified pool of liquidity and significant cost savings to institutional investors and broker-dealers across the global fixed-income markets. Approximately 2,100 firms leverage MarketAxess� patented technology to efficiently trade fixed-income securities. Our automated and algorithmic trading solutions, combined with our integrated and actionable data offerings, help our clients make faster, better-informed decisions on when and how to trade on our platform. MarketAxess� award-winning Open Trading® marketplace is widely regarded as the preferred all-to-all trading solution in the global credit markets. Founded in 2000, MarketAxess connects a robust network of market participants through an advanced full trading lifecycle solution that includes automated trading solutions, intelligent data and index products and a range of post-trade services. Learn more at and on X .

Table 2: Trading Volume Detail

Ìý

Ìý

Ìý

Ìý

Ìý

Month Ended May 31,

Ìý

Ìý

In millions (unaudited)

Ìý

Ìý

2025

Ìý

Ìý

2024

Ìý

Ìý

% Change

Ìý

Ìý

Ìý

Ìý

Ìý

Volume

Ìý

Ìý

ADV

Ìý

Ìý

Volume

Ìý

Ìý

Ìý

ADV

Ìý

Ìý

Volume

Ìý

Ìý

ADV

Ìý

Ìý

Credit

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

High-grade

Ìý

Ìý

$

160,636

Ìý

Ìý

$

7,649

Ìý

Ìý

$

134,675

Ìý

Ìý

Ìý

$

6,122

Ìý

Ìý

Ìý

19

Ìý

%

Ìý

25

Ìý

%

High-yield

Ìý

Ìý

Ìý

33,636

Ìý

Ìý

Ìý

1,602

Ìý

Ìý

Ìý

29,044

Ìý

Ìý

Ìý

Ìý

1,320

Ìý

Ìý

Ìý

16

Ìý

Ìý

Ìý

21

Ìý

Ìý

Emerging markets

Ìý

Ìý

Ìý

75,925

Ìý

Ìý

Ìý

3,615

Ìý

Ìý

Ìý

67,625

Ìý

Ìý

Ìý

Ìý

3,074

Ìý

Ìý

Ìý

12

Ìý

Ìý

Ìý

18

Ìý

Ìý

Eurobonds

Ìý

Ìý

Ìý

54,538

Ìý

Ìý

Ìý

2,870

Ìý

Ìý

Ìý

45,471

Ìý

Ìý

Ìý

Ìý

2,274

Ìý

Ìý

Ìý

20

Ìý

Ìý

Ìý

26

Ìý

Ìý

Other credit

Ìý

Ìý

Ìý

12,850

Ìý

Ìý

Ìý

612

Ìý

Ìý

Ìý

12,836

Ìý

Ìý

Ìý

Ìý

582

Ìý

Ìý

Ìý

-

Ìý

Ìý

Ìý

5

Ìý

Ìý

Total credit trading1

Ìý

Ìý

Ìý

337,585

Ìý

Ìý

Ìý

16,348

Ìý

Ìý

Ìý

289,651

Ìý

Ìý

Ìý

Ìý

13,372

Ìý

Ìý

Ìý

17

Ìý

Ìý

Ìý

22

Ìý

Ìý

Rates

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

U.S. government bonds2

Ìý

Ìý

Ìý

594,163

Ìý

Ìý

Ìý

28,293

Ìý

Ìý

Ìý

397,586

Ìý

Ìý

Ìý

Ìý

18,072

Ìý

Ìý

Ìý

49

Ìý

Ìý

Ìý

57

Ìý

Ìý

Agency and other government bonds1

Ìý

Ìý

Ìý

30,329

Ìý

Ìý

Ìý

1,589

Ìý

Ìý

Ìý

14,744

Ìý

Ìý

Ìý

Ìý

728

Ìý

Ìý

Ìý

106

Ìý

Ìý

Ìý

118

Ìý

Ìý

Total rates trading

Ìý

Ìý

Ìý

624,492

Ìý

Ìý

Ìý

29,882

Ìý

Ìý

Ìý

412,330

Ìý

Ìý

Ìý

Ìý

18,800

Ìý

Ìý

Ìý

51

Ìý

Ìý

Ìý

59

Ìý

Ìý

Total trading

Ìý

Ìý

$

962,077

Ìý

Ìý

$

46,230

Ìý

Ìý

$

701,981

Ìý

Ìý

Ìý

$

32,172

Ìý

Ìý

Ìý

37

Ìý

Ìý

Ìý

44

Ìý

Ìý

Number of U.S. Trading Days3

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

21

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

22

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Number of U.K. Trading Days4

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

19

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

20

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Year-to-Date Ended May 31,

Ìý

Ìý

In millions (unaudited)

Ìý

Ìý

2025

Ìý

Ìý

2024

Ìý

Ìý

% Change

Ìý

Ìý

Ìý

Ìý

Ìý

Volume

Ìý

Ìý

ADV

Ìý

Ìý

Volume

Ìý

Ìý

Ìý

ADV

Ìý

Ìý

Volume

Ìý

Ìý

ADV

Ìý

Ìý

Credit

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

High-grade

Ìý

Ìý

$

802,448

Ìý

Ìý

$

7,791

Ìý

Ìý

$

735,624

Ìý

Ìý

Ìý

$

7,006

Ìý

Ìý

Ìý

9

Ìý

%

Ìý

11

Ìý

%

High-yield

Ìý

Ìý

Ìý

164,952

Ìý

Ìý

Ìý

1,601

Ìý

Ìý

Ìý

145,839

Ìý

Ìý

Ìý

Ìý

1,389

Ìý

Ìý

Ìý

13

Ìý

Ìý

Ìý

15

Ìý

Ìý

Emerging markets

Ìý

Ìý

Ìý

405,938

Ìý

Ìý

Ìý

3,941

Ìý

Ìý

Ìý

363,206

Ìý

Ìý

Ìý

Ìý

3,459

Ìý

Ìý

Ìý

12

Ìý

Ìý

Ìý

14

Ìý

Ìý

Eurobonds

Ìý

Ìý

Ìý

258,158

Ìý

Ìý

Ìý

2,531

Ìý

Ìý

Ìý

216,884

Ìý

Ìý

Ìý

Ìý

2,085

Ìý

Ìý

Ìý

19

Ìý

Ìý

Ìý

21

Ìý

Ìý

Other credit

Ìý

Ìý

Ìý

64,848

Ìý

Ìý

Ìý

630

Ìý

Ìý

Ìý

49,097

Ìý

Ìý

Ìý

Ìý

467

Ìý

Ìý

Ìý

32

Ìý

Ìý

Ìý

35

Ìý

Ìý

Total credit trading1

Ìý

Ìý

Ìý

1,696,344

Ìý

Ìý

Ìý

16,494

Ìý

Ìý

Ìý

1,510,650

Ìý

Ìý

Ìý

Ìý

14,406

Ìý

Ìý

Ìý

12

Ìý

Ìý

Ìý

14

Ìý

Ìý

Rates

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

Ìý

U.S. government bonds2

Ìý

Ìý

Ìý

2,972,889

Ìý

Ìý

Ìý

28,863

Ìý

Ìý

Ìý

1,873,806

Ìý

Ìý

Ìý

Ìý

17,846

Ìý

Ìý

Ìý

59

Ìý

Ìý

Ìý

62

Ìý

Ìý

Agency and other government bonds1

Ìý

Ìý

Ìý

119,090

Ìý

Ìý

Ìý

1,167

Ìý

Ìý

Ìý

61,582

Ìý

Ìý

Ìý

Ìý

591

Ìý

Ìý

Ìý

93

Ìý

Ìý

Ìý

97

Ìý

Ìý

Total rates trading

Ìý

Ìý

Ìý

3,091,979

Ìý

Ìý

Ìý

30,030

Ìý

Ìý

Ìý

1,935,388

Ìý

Ìý

Ìý

Ìý

18,437

Ìý

Ìý

Ìý

60

Ìý

Ìý

Ìý

63

Ìý

Ìý

Total trading

Ìý

Ìý

$

4,788,323

Ìý

Ìý

$

46,524

Ìý

Ìý

$

3,446,038

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$

32,843

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39

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Ìý

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42

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Number of U.S. Trading Days3

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Ìý

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103

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Ìý

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105

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Number of U.K. Trading Days4

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102

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Ìý

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104

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1 Consistent with FINRA TRACE reporting standards, both sides of trades are included in the Company's reported volumes when the Company executes trades on a matched principal basis between two counterparties.

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2 Consistent with industry standards, U.S. government bond trades are single-counted.

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3 The number of U.S. trading days is based on the SIFMA holiday recommendation calendar.

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4 The number of U.K. trading days is based primarily on the U.K. Bank holiday schedule.

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INVESTOR RELATIONS

Stephen Davidson

MarketAxess Holdings Inc.

+1 212 813 6313

[email protected]

MEDIA RELATIONS

Marisha Mistry

MarketAxess Holdings Inc.

+1 917 267 1232

[email protected]

Source: MarketAxess Holdings Inc.

Marketaxess Hldgs Inc

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