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Security record · archived quarter

MKTX

MarketAxess Holdings Inc. · Financial Services · Financial - Capital Markets

162.50 0.0% mkt cap $5.72B quote delayed (FMP) · as of Aug 25 22:08 UTC — separate from filing data below

Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024
19Tracked holders
0Δ holders
16.65MShares held
$3.72BReported value
+1New positions
−1Exits
Stable Conviction score 52/100 3 quarters of rising tracked shares ●●●○○○ How these are computed → Explain this at the Research Desk →

Momentum inputs (comparable managers): holder breadth 0.0% · share flow +1.1% · net new positions 0.0%formula

All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025

Ownership over time
QuarterHoldersΔSharesReported valueNewExits
Q2 2026 124 +1 26.76M $3.03B +9 −7
Q1 2026 125 -6 27.43M $4.53B +6 −13
Q4 2025 131 0 28.24M $5.12B +2 −1
Q3 2025 20 -1 17.11M $2.98B −2
Q2 2025 19 0 16.65M $3.72B +1 −1
Q1 2025 16 0 7.12M $1.54B
Q4 2024 16 -2 6.45M $1.46B +1 −3
Q3 2024 17 +2 4.95M $1.27B +3 −1
Q2 2024 15 5.07M $1.02B
Holder count
Who holds it · Q2 2025
#ManagerSharesΔ sharesValueTheir weightHeld
1 The Vanguard Group (passive) 4.36M $973.62M 0.0% n/c 1 SEC ↗
2 The Vanguard Group (passive) 4.36M $973.62M 0.0% n/c 1 SEC ↗
3 The Vanguard Group (passive) 4.36M $973.62M 0.0% n/c 1 SEC ↗
4 The Vanguard Group (passive) 4.36M $973.62M 0.0% n/c 1 SEC ↗
5 The Vanguard Group (passive) 4.36M $973.62M 0.0% n/c 1 SEC ↗
6 BlackRock (passive) 2.65M $591.83M 0.0% n/c 1 SEC ↗
7 BlackRock (passive) 2.65M $591.83M 0.0% n/c 1 SEC ↗
8 BlackRock (passive) 2.65M $591.83M 0.0% n/c 1 SEC ↗
9 BlackRock (passive) 2.65M $591.83M 0.0% n/c 1 SEC ↗
10 BlackRock (passive) 2.65M $591.83M 0.0% n/c 1 SEC ↗
11 BlackRock (passive) 2.65M $591.83M 0.0% n/c 1 SEC ↗
12 BlackRock (passive) 2.65M $591.83M 0.0% n/c 1 SEC ↗
13 BlackRock (passive) 2.65M $591.83M 0.0% n/c 1 SEC ↗
14 BlackRock (passive) 2.65M $591.83M 0.0% n/c 1 SEC ↗
15 BlackRock (passive) 2.65M $591.83M 0.0% n/c 1 SEC ↗
16 BlackRock (passive) 2.65M $591.83M 0.0% n/c 1 SEC ↗
17 BlackRock (passive) 2.65M $591.83M 0.0% n/c 1 SEC ↗
18 BlackRock (passive) 2.65M $591.83M 0.0% n/c 1 SEC ↗
19 BlackRock (passive) 2.65M $591.83M 0.0% n/c 1 SEC ↗
20 BlackRock (passive) 2.65M $591.83M 0.0% n/c 1 SEC ↗
21 BlackRock (passive) 2.65M $591.83M 0.0% n/c 1 SEC ↗
22 BlackRock (passive) 2.65M $591.83M 0.0% n/c 1 SEC ↗
23 BlackRock (passive) 2.65M $591.83M 0.0% n/c 1 SEC ↗
24 BlackRock (passive) 2.65M $591.83M 0.0% n/c 1 SEC ↗
25 BlackRock (passive) 2.65M $591.83M 0.0% n/c 1 SEC ↗
26 BlackRock (passive) 2.65M $591.83M 0.0% n/c 1 SEC ↗
27 Fidelity (FMR) 2.33M $520.86M 0.0% n/c 1 SEC ↗
28 Fidelity (FMR) 2.33M $520.86M 0.0% n/c 1 SEC ↗
29 Fidelity (FMR) 2.33M $520.86M 0.0% n/c 1 SEC ↗
30 Fidelity (FMR) 2.33M $520.86M 0.0% n/c 1 SEC ↗
31 Fidelity (FMR) 2.33M $520.86M 0.0% n/c 1 SEC ↗
32 Fidelity (FMR) 2.33M $520.86M 0.0% n/c 1 SEC ↗
33 State Street Global Advisors (passive) 1.53M +4.6% $342.31M 0.0% ▲ Add 3 SEC ↗
34 PRIMECAP Management 1.34M -1.6% $299.12M 0.2% ▼ Trim 5 SEC ↗
35 Geode Capital Management (passive) 1.14M +0.6% $254.46M 0.0% ▲ Add 5 SEC ↗
36 Geode Capital Management (passive) 1.14M +0.6% $254.46M 0.0% ▲ Add 5 SEC ↗
37 AQR Capital Management 758.46K +485.6% $167.20M 0.1% ▲ Add 5 SEC ↗
38 AQR Capital Management 758.46K +485.6% $167.20M 0.1% ▲ Add 5 SEC ↗
39 AQR Capital Management 758.46K +485.6% $167.20M 0.1% ▲ Add 5 SEC ↗
40 AQR Capital Management 758.46K +485.6% $167.20M 0.1% ▲ Add 5 SEC ↗
41 AQR Capital Management 758.46K +485.6% $167.20M 0.1% ▲ Add 5 SEC ↗
42 AQR Capital Management 758.46K +485.6% $167.20M 0.1% ▲ Add 5 SEC ↗
43 Norges Bank (passive) 513.09K +1.1% $114.59M 0.0% ▲ Add 5 SEC ↗
44 Millennium Management 432.18K -30.2% $96.52M 0.1% ▼ Trim 5 SEC ↗
45 Citadel Advisors 351.17K -26.0% $78.43M 0.1% ▼ Trim 5 SEC ↗
46 Citadel Advisors 351.17K -26.0% $78.43M 0.1% ▼ Trim 5 SEC ↗
47 Two Sigma Investments 280.09K -34.9% $62.56M 0.1% ▼ Trim 5 SEC ↗
48 Arrowstreet Capital 250.04K +181.2% $55.84M 0.0% ▲ Add 4 SEC ↗
49 Renaissance Technologies 190.60K +47.2% $42.57M 0.1% ▲ Add 5 SEC ↗
50 Baillie Gifford 186.69K -15.6% $41.70M 0.0% ▼ Trim 5 SEC ↗
51 Baillie Gifford 186.69K -15.6% $41.70M 0.0% ▼ Trim 5 SEC ↗
52 Baillie Gifford 186.69K -15.6% $41.70M 0.0% ▼ Trim 5 SEC ↗
53 Baillie Gifford 186.69K -15.6% $41.70M 0.0% ▼ Trim 5 SEC ↗
54 D. E. Shaw & Co. 168.90K +50.2% $37.72M 0.0% ▲ Add 5 SEC ↗
55 D. E. Shaw & Co. 168.90K +50.2% $37.72M 0.0% ▲ Add 5 SEC ↗
56 T. Rowe Price 59.48K +0.1% $13.29M 0.0% ▲ Add 5 SEC ↗
57 T. Rowe Price 59.48K +0.1% $13.29M 0.0% ▲ Add 5 SEC ↗
58 Point72 Asset Management 55.47K New $12.39M 0.0% New 1 SEC ↗
59 Adage Capital Partners 34.35K +40.5% $7.67M 0.0% ▲ Add 5 SEC ↗
60 Gotham Asset Management 13.21K +769.3% $2.95M 0.0% ▲ Add 3 SEC ↗

“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.

New buyers

Point72 Asset Management $12.39M 0.0%

Exited

Marshall Wace $77.53M was 0.1%

Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 444 holders, 37.78M shares, $5.93B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.

Frequently co-owned

What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.

Insider transactions

Open-market purchases (P)

No open-market insider purchases in our coverage window.

Open-market sales (S)

Aug 10 Pintoff Scott

Officer · 100 sh · $16,260

Awards, exercises and tax withholding are never counted as buys or sales here. Methodology

Beneficial ownership
Aug 14 SC 13G/A — North Reef Capital Management LP

View original SEC filing ↗

Aug 13 SC 13G/A — AQR CAPITAL MANAGEMENT LLC

View original SEC filing ↗

Aug 06 SC 13G/A — PRIMECAP MANAGEMENT CO/CA/

View original SEC filing ↗

Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR. Reporting period: Q2 2025 · Methodology · Get this via the API