MarketAxess Holdings Inc. (MKTX) Institutional Ownership & Insider Trading

396 institutions reported holding MarketAxess Holdings Inc. shares in 13F filings for the quarter ended 2026-06-30, according to EquiReason's reading of their SEC filings. 12 insider trades on Form 4 since 2025-10-01.

Source: SEC EDGAR filings · figures as of 2026-06-30 · read by EquiReason

MKTXMarketAxess Holdings Inc.Follow MKTX — free

Capital Markets · Financials

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Market cap: 5.8B
P/E TTM: 19.4
Dividend yield: 1.9%
52-week: —
Next earnings: 4 Feb, in 103 days

Institutions · all 13F filers

quarter to 30 Jun 2026 · filers in both quarters

396 institutions held —% of the shares. Across filers that reported both quarters, shares held changed +1.5%.

Largest moves, shares (millions)

Institutional flow by quarter

net shares added or trimmed, millions · filers in both quarters

Quarter	Holders	Shares held, M	Change	Increased	New	Decreased	Closed
Jun 26	396	39	+1.5%	121	43	166	94
Mar 26	443	38	+6.1%	169	41	137	80
Dec 25	476	37	+7.6%	138	92	166	55
Sep 25	434	36	-1.5%	146	43	171	120
Jun 25	519	37	-0.5%	208	68	136	49
Mar 25	499	37	-1.0%	185	67	160	64
Dec 24	503	38	+1.4%	180	58	148	64
Sep 24	494	36	-2.8%	137	71	178	33

MarketAxess Holdings Inc. — questions

Who owns MarketAxess Holdings Inc. stock?: 396 institutions reported MarketAxess Holdings Inc. shares in 13F filings for the quarter ended 2026-06-30. The largest: BlackRock, Inc. (11.4%), PRIMECAP MANAGEMENT CO/CA/ (10.0%), North Reef Capital Management LP (9.7%).
Are MarketAxess Holdings Inc. insiders buying or selling?: 12 insider trades on Form 4 since 2025-10-01; the full list, with dates, people and plan status, is on this page.

Every figure on this page comes from MarketAxess Holdings Inc.'s own SEC filings — see them on SEC EDGAR. Price data is licensed and shown only inside the product.

How these figures are read: methodology · EquiReason.

Important information. Figures on this page are taken from filings submitted to the U.S. Securities and Exchange Commission (SEC) and processed automatically by EquiReason. They may contain errors, omissions or delays, and EquiReason makes no representation or warranty as to their accuracy, completeness or timeliness. Always verify figures against the original filing on SEC EDGAR before relying on them.

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