Marketaxess Holdings Inc (MKTX) SEC Filing 10-Q Quarterly report for the period ending Sunday, September 30, 2018

Exhibit 99.1

MARKETAXESS REPORTS THIRD QUARTER 2018 REVENUES

OF $101.4 MILLION, OPERATING INCOME OF $46.4 MILLION AND

DILUTED EPS OF $1.02

Third Quarter Financial Highlights^*

^*All comparisons versus third quarter 2017.

NEW YORK, October 24, 2018 – MarketAxess Holdings Inc. (Nasdaq: MKTX), the operator of a leading electronic trading platform for fixed-income securities, and the provider of market data and post-trade services for the global fixed-income markets, today announced results for the quarter ended September 30, 2018.

“Strong market share gains across our core products and increased Open Trading activity led to a solid increase in trading volume in the third quarter in spite of quiet credit trading conditions,” said Rick McVey, Chairman and CEO of MarketAxess. “Product diversification is evident in the results with a record 9.2% estimated high-yield market share, 22% year-on-year increase in emerging market trading volume and a 28% increase in Eurobond volumes. We are encouraged by the improvement in market conditions for credit trading that we started to see in September.”

Third Quarter Results

Total revenues for the third quarter of 2018 increased 6.1% to $101.4 million, compared to $95.6 million for the third quarter of 2017. Operating income was $46.4 million, compared to $46.6 million for the third quarter of 2017, a decrease of 0.5%. Operating margin was 45.8%, compared to 48.8% for the third quarter of 2017. Net income totaled $38.6 million, or $1.02 per share on a diluted basis, compared to $34.1 million, or $0.90 per share, for the third quarter of 2017.

Commission revenue for the third quarter of 2018 increased 4.9% to $90.5 million, compared to $86.3 million for the third quarter of 2017. Variable transaction fees were $66.0 million on total trading volume of $385.5 billion for the third quarter of 2018, compared to variable transaction fees of $65.9 million on total trading volume of $346.8 billion for the third quarter of 2017. U.S. high-grade trading volume as a percentage of FINRA’s high-grade TRACE trading volume increased to an estimated 17.5% for the third quarter of 2018, compared to an estimated 17.2% for the third quarter of 2017.

All other revenue increased 17.4% to $10.9 million, compared to $9.3 million for the third quarter of 2017, principally due to higher information services revenue of $0.8 million and post-trade services revenue of $0.8 million.

Total expenses for the third quarter of 2018 increased 12.4% to $55.0 million, compared to $48.9 million for the third quarter of 2017. The increase in total expenses was largely due to higher occupancy costs of $1.7 million, depreciation and amortization of $1.6 million, marketing and advertising expenses of $0.9

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