MarketAxess Ownership | Who Owns MarketAxess?

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MarketAxess Ownership Summary

MarketAxess is owned by 111.55% institutional investors, 0.95% insiders. Blackrock funding, inc. /de is the largest institutional shareholder, holding 11.33% of MKTX shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 6.15% of its assets in MarketAxess shares.

MKTX Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	MarketAxess	111.55%	0.95%	-12.49%
Sector	Financial Services Stocks	493.55%	13.79%	-407.34%
Industry	Capital Markets Stocks	49.47%	16.48%	34.05%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock funding, inc. /de	4.00M	11.33%	$453.94M
Vanguard group	3.84M	10.37%	$695.98M
Primecap management co/ca/	3.50M	9.93%	$397.77M
North reef capital management lp	3.40M	9.62%	$385.30M
Blackrock	2.95M	7.82%	$591.45M
Aqr capital management	1.99M	5.63%	$222.76M
Vanguard capital management	1.55M	4.38%	$175.53M
Fmr	1.40M	3.98%	$159.45M
State street	1.28M	3.63%	$145.43M
Neuberger berman group	1.23M	3.48%	$139.58M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Corebridge financial	38.65K	100.00%	$4.25M
North reef capital management lp	3.40M	14.77%	$385.30M
Source financial advisors	115.36K	7.11%	$23.13M
Guardcap asset management	536.32K	4.42%	$62.16M
Azora capital lp	513.08K	2.45%	$58.23M
Rdst capital	247.11K	2.32%	$28.04M
Taika capital, lp	11.89K	2.05%	$2.69M
Qsv equity investors	6.75K	1.81%	$1.22M
Alamar capital management	16.83K	1.55%	$2.93B
Eubel brady & suttman asset management	114.29K	1.54%	$12.97M

Top Buyers

Holder	Shares	% Assets	Change
North reef capital management lp	3.40M	14.77%	1.52M
Norges bank	572.42K	0.01%	572.42K
Goldman sachs group	1.03M	0.01%	522.27K
Azora capital lp	513.08K	2.45%	513.08K
Citadel advisors	481.69K	0.01%	399.53K

Top Sellers

Holder	Shares	% Assets	Change
Millennium management	109.59K	0.00%	-977.60K
Aqr capital management	1.99M	0.08%	-696.46K
Findlay park partners llp	-	-	-480.60K
Van eck associates	924.62K	0.06%	-314.67K
Congress asset management co /ma	-	-	-286.28K

New Positions

Holder	Shares	% Assets	Change	Value
Norges bank	572.42K	0.01%	572.42K	$64.96M
Azora capital lp	513.08K	2.45%	513.08K	$58.23M
Sixth street partners management company	330.81K	0.01%	330.81K	$37.54M
Freestone grove partners lp	172.80K	0.13%	172.80K	$19.61M
M&g	121.31K	0.07%	121.31K	$13.71M

Sold Out

Holder	Change
Nelson, van denburg & campbell wealth management group	-1.00
Claris advisors, llc / mo /	-1.00
Westend advisors	-1.00
Colonial trust advisors	-1.00
Advisornet financial	-1.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Jun 30, 2026	410	-10.48%	39,377,556	2.98%	111	1.03%	187	-22.41%	169	9.74%
Mar 31, 2026	248	-49.80%	12,781,271	-64.97%	34	0.36%	123	-53.76%	82	-52.87%
Dec 31, 2025	335	-27.80%	23,348,295	-41.93%	63	0.54%	184	-19.65%	115	-36.11%
Sep 30, 2025	440	-17.14%	40,083,415	14.30%	107	1.21%	218	-28.52%	170	6.92%
Jun 30, 2025	536	2.49%	36,950,853	0.68%	99	1.03%	310	8.77%	157	-9.77%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
iShares Core S&P Small-Cap ETF	2.16M	6.15%	-2.07K
Vanguard Capital Opportunity Inv	1.83M	5.21%	-
Vanguard MStar Total Stk Mkt Idx Invest	1.08M	3.06%	3.03K
Vanguard Morn Total Stk Mkt Idx Investor	1.07M	3.05%	-59.29K
Vanguard US Total Market Shares ETF	1.14M	3.02%	-58.38K
Vanguard Total Stock Mkt Idx Inv	1.07M	3.02%	-59.29K
Vanguard Institutional 500 Index Trust	1.07M	2.86%	6.63K
T. Rowe Price Mid-Cap Growth	1.05M	2.80%	-1.90K
T. Rowe Price US Mid-Cap Growth Equity	1.05M	2.79%	-1.20K
PRIMECAP Odyssey Aggressive Growth	937.72K	2.66%	42.96K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Aug 10, 2026	Pintoff Scott	General Counsel and Secretary	Sell	$16.26K
Jul 10, 2026	Pintoff Scott	General Counsel and Secretary	Sell	$11.51K
Jun 10, 2026	Pintoff Scott	General Counsel and Secretary	Sell	$11.60K
May 11, 2026	Pintoff Scott	General Counsel and Secretary	Sell	$14.70K
Apr 10, 2026	Pintoff Scott	General Counsel and Secretary	Sell	$17.20K

Insider Transactions Trends

Date	Buy	Sell
2026 Q3	-	2
2026 Q2	-	3
2026 Q1	-	3
2025 Q4	-	1
2025 Q3	-	2

MKTX Ownership FAQ

Who Owns MarketAxess?

MarketAxess shareholders are primarily institutional investors at 111.55%, followed by 0.95% insiders and -12.50% retail investors. The average institutional ownership in MarketAxess's industry, Capital Markets Stocks, is 49.47%, which MarketAxess exceeds.

Who owns the most shares of MarketAxess?

MarketAxess’s largest shareholders are Blackrock funding, inc. /de (4M shares, 11.33%), Vanguard group (3.84M shares, 10.37%), and Primecap management co/ca/ (3.5M shares, 9.93%). Together, they hold 31.63% of MarketAxess’s total shares outstanding.

Does Blackrock own MarketAxess?

Yes, BlackRock owns 7.82% of MarketAxess, totaling 2.95M shares as of Jun 2024. This represents 0.01% of BlackRock's total assets, with a market value of 591.45M$. In the last quarter, BlackRock decreased its holdings by -274K shares, a -8.51% change.

Who is MarketAxess’s biggest shareholder by percentage of total assets invested?

Corebridge financial is MarketAxess’s biggest shareholder by percentage of total assets invested, with 100.00% of its assets in 38.65K MarketAxess shares, valued at 4.25M$.

Who is the top mutual fund holder of MarketAxess shares?

iShares Core S&P Small-Cap ETF is the top mutual fund holder of MarketAxess shares, with 6.15% of its total shares outstanding invested in 2.16M MarketAxess shares.

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