MarketAxess Holdings, Inc. (MKTX)
Nasdaq: MKTX · Security Brokers, Dealers & Flotation Companies · New York, NY · filing with the SEC since 2004
Grade5.2
◀ Past 6.4● Present 5.1▶ Future 4.2
Who owns MarketAxess Holdings, Inc.
As filed with the SECHolders of 5% or more
6
Blackrock, Inc. holds 10.9% of Common Stock, as its SCHEDULE 13G/A filed Feb 6, 2026 says.
Directors and officers
20
report now, of 33 people on the record since 2006. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 6 named at left.
Holders of 5% or moreshare of the class, as filed
Blackrock, Inc.
SCHEDULE 13G/A · filed Feb 6, 2026 · Common Stock · 9.9% in Jan 21, 2026
Primecap Management Co/ca/
SCHEDULE 13G/A · filed Aug 6, 2026 · COM · 8.54% in Feb 11, 2026
North Reef Capital Management LP
SCHEDULE 13G/A · filed Aug 14, 2026 · Common Stock, $0.003 par value · 5.27% in May 15, 2026
Vanguard Portfolio Management
SCHEDULE 13G · filed Apr 29, 2026 · Common Stock
AQR Capital Management, LLC
SCHEDULE 13G/A · filed Aug 13, 2026 · Common Stock, $0.003 par value · 6.88% in Feb 13, 2026
Vanguard Capital Management
SCHEDULE 13G · filed Apr 30, 2026 · Common Stock
Guardian Capital LP
SCHEDULE 13G/A · filed Feb 14, 2025 · Common Stock, $0.003 Par Value · reported falling below 5%
Fmr LLC
SCHEDULE 13G/A · filed May 6, 2026 · COMMON STOCK · reported falling below 5%, from 6.1% in Aug 6, 2025
T. Rowe Price Investment Management, Inc.
SCHEDULE 13G/A · filed Nov 14, 2025 · COMMON STOCK · reported falling below 5%
The Vanguard Group
SCHEDULE 13G/A · filed Mar 27, 2026 · Common Stock · reported falling below 5%, from 10.3% in Oct 31, 2025
What MKTX reports owning in othersstakes of 5% or more, and other ties
Other ties the annual report names
RFQ Hub Holdings LLC
A company bought · acquisition · Sep 2025 · owns, named in the 10-K filed Feb 24, 2026
23 subsidiaries in 10 countries, from the list filed with the 10-K filed Feb 24, 2026.
Insider tradesForm 4
13sales
0purchases
12sales on a scheduled plan
2people selling
$1.2Msold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Nov 10, 2025 to Nov 10, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Nov 10, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window2 of 33 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Cruger William Frank Jr. | director | 1 | $1.0M | 0 | 0 | $0 |
| Pintoff Scott | General Counsel and Secretary | 12 | $200,000 | 12 | 0 | $0 |