All companies
MarketAxess Holdings logo

What smart money is saying about MarketAxess HoldingsUnited States flag

MKTX · Financial Services · Financial - Capital Markets · Market cap $4.19B

4 funds in our archive have pitched MarketAxess Holdings — most recently Heartland Advisors Mid Cap Value Fund in June 2026.

Company profile

MarketAxess Holdings Inc. develops and operates a premier electronic trading platform, serving institutional investors and broker-dealers globally. This platform provides essential access to deep liquidity across a broad spectrum of fixed-income assets, including U.S. investment-grade and high-yield corporate bonds, U.S. Treasuries, municipal bonds, emerging market debt, and Eurobonds, among other debt securities. Through its innovative Open Trading protocols, the company facilitates anonymous, "all-to-all" corporate bond transactions between its diverse client base. Beyond its core trading capabilities, MarketAxess offers a comprehensive array of value-added products and services. These include Composite+ pricing and other sophisticated market data tools designed to inform trading strategies, as well as auto-execution and custom workflow solutions. The company also provides robust connectivity to ensure straight-through processing and specialized technology services aimed at optimizing trading environments. Additionally, MarketAxess delivers vital pre- and post-trade support, covering trade matching, publication, regulatory reporting, and extensive market and reference data for a wide range of financial instruments. Founded in 2000, MarketAxess Holdings Inc. maintains its headquarters in New York, New York.

Get an email when a fund writes about it

Summarize with Warren AI
3
Reported positions
2
Bought
0
Sold
5
Letters

Position history

Between Q2 2025 and Q3 2026, 3 fund letters reported a position in MarketAxess Holdings2 opened or added to the position.

Fund letters reporting a position in MarketAxess Holdings, by quarter
QuarterLettersBoughtSoldTheses
Q3 20261000
Q2 20262202
Q4 20250001
Q2 20250001

Fund activity · 3 positions · 2 moves

  • HoldsUpslope Capital Long/Short Strategy
    July 2026
    MarketAxess (MKTX): Challenged member of fixed income/credit “exchange” duopoly.
    Read the letterMarketAxess Holdings
  • New positionHeartland Advisors Mid Cap Value Fund
    June 2026
    While ON was one of the Fund's top contributor last quarter, the biggest detractor to our Strategy's performance was MarketAxess Holdings (MKTX) , a position we initiated in the first quarter and built in the second quarter.
    Read the letterMarketAxess Holdings
  • New positionHeartland Advisors Opportunistic Value Equity Strategy
    June 2026
    While TXN was one of our top contributors last quarter, the biggest detractor to our Strategy’s performance was MarketAxess Holdings (MKTX) , a position we initiated in the first quarter and built in the second quarter.
    Read the letterMarketAxess Holdings

Fund coverage · 4 theses

  • Heartland Advisors Mid Cap Value Fund
    June 2026

    MarketAxess operates the largest U.S. corporate bond e-trading platform and offers operating leverage, market-share gains, scale advantages, and an attractive valuation.

    Read the full thesis
  • Heartland Advisors Opportunistic Value Equity Strategy
    June 2026

    MarketAxess operates the largest U.S. corporate bond e-trading platform and is seen as attractively valued with operating leverage, market share gains, and scale advantages supporting a multi-year profit growth cycle.

    Read the full thesis
  • Heartland Mid Cap Value Fund
    December 2025

    MarketAxess Holdings is the leading U.S. electronic corporate bond trading platform with strong margins, renewed share gains under new leadership, international growth opportunities, and a valuation discount relative to exchange peers.

    Read the full thesis
  • LRT Capital Management
    June 2025

    MarketAxess Holdings Inc. is a leader in electronic trading of fixed-income securities, leveraging a self-reinforcing network effect and advanced technology to enhance transparency, liquidity, and efficiency in the corporate bond market.

    Read the full thesis

Read every full thesis on MarketAxess Holdings

Unlock all 4 theses — the full reasoning behind what funds are buying, plus unlimited access to the entire archive.

View plans
Share this ledger