Stocks › MKTX
MARKETAXESS HOLDINGS INC
MKTX·Nasdaq·
United States·USD
United States·USD$164.03
-0.01 (-0.01%)
Close · Oct 6, 2026 · Close Prices from Tiingo.com
MKTX
MARKETAXESS HOLDINGS INC · Nasdaq
Nasdaq 100S&P 500
Filings
Default90D1Y5YALL
MKTXS&P 500 (rebased)
Congress BuyCongress SellInsider BuyInsider SellForm 1448-K ResultsLobbying
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Daily closes, adjusted for splits and dividends · Close Prices from Tiingo.comHover a marker, every one is a filing · move across the line for the crosshair
Congressional Trades
Recent trades of MKTX by members of U.S. Congress · 26 on record · 1 in the last 12 months
Whale Activity
Position changes in MKTX reported for 2026-06-30 by 12 tracked institutional filers
- Increased5
- New0
- Held0
- Decreased5
- Closed0
- No prior filing2
| Filer | Shares | Value | Change |
|---|---|---|---|
| BlackRock, Inc. | 4.0M | $453.9M | decreased |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2.1M | $238.4M | decreased |
| VANGUARD CAPITAL MANAGEMENT LLC | 1.5M | $175.5M | decreased |
| TWO SIGMA INVESTMENTS, LP | 543.9K | $61.7M | increased |
| Davis Asset Management, L.P. | 500.0K | $56.7M | — |
| CITADEL ADVISORS LLC | 481.7K | $54.7M | increased |
| RENAISSANCE TECHNOLOGIES LLC | 200.0K | $22.7M | increased |
| MILLENNIUM MANAGEMENT LLC | 109.6K | $12.4M | decreased |
| D. E. Shaw & Co., Inc. | 48.0K | $5.4M | increased |
| Robertson Opportunity Capital, LLC | 28.8K | $3.3M | — |
| Point72 Asset Management, L.P. | 8,100 | $919K | decreased |
| Bridgewater Associates, LP | 7,024 | $797K | increased |
KeyVex tracks a curated set of large 13F filers plus the largest positions in recent filings, so this is a sample of institutional activity, not the whole market.
Insider Trading
Net shares bought (+) or sold (−) on the open market by MKTX insiders, by quarter · Form 4
Recent Insider Transactions
2,075 transactions on record · newest first
| Insider | Type | Shares | Price | Value | Date | |
|---|---|---|---|---|---|---|
| Pintoff ScottGeneral Counsel and Secretary | Sale | −100 | $163.32 | $16K | Sep 10, 2026 | Form 4 ↗ |
| Cruger William Frank Jr.Director · Director | Sale | −6,164 | $163.20 | $1.0M | Sep 10, 2026 | Form 4 ↗ |
| Pintoff ScottGeneral Counsel and Secretary | Sale | −100 | $162.60 | $16K | Aug 10, 2026 | Form 4 ↗ |
| Pintoff ScottGeneral Counsel and Secretary | Sale | −100 | $115.12 | $12K | Jul 10, 2026 | Form 4 ↗ |
| HERNANDEZ CARLOS MAURICIODirector | Gift | −10.7K | $0.00 | $0 | Jun 18, 2026 | Form 4 ↗ |
| HERNANDEZ CARLOS MAURICIODirector | Gift | +10.7K | $0.00 | $0 | Jun 18, 2026 | Form 4 ↗ |
| Altobello Nancy A.Director | Grant / award | +1,390 | $0.00 | $0 | Jun 10, 2026 | Form 4 ↗ |
| Pintoff ScottGeneral Counsel and Secretary | Sale | −100 | $116.03 | $12K | Jun 10, 2026 | Form 4 ↗ |
| Cifu Douglas ADirector | Grant / award | +1,390 | $0.00 | $0 | Jun 10, 2026 | Form 4 ↗ |
| Portney Emily HopeDirector | Grant / award | +1,390 | $0.00 | $0 | Jun 10, 2026 | Form 4 ↗ |
| Chwick JaneDirector | Grant / award | +1,390 | $0.00 | $0 | Jun 10, 2026 | Form 4 ↗ |
| Gibson KourtneyDirector | Grant / award | +1,390 | $0.00 | $0 | Jun 10, 2026 | Form 4 ↗ |
| Hoornweg RobertoDirector | Grant / award | +1,390 | $0.00 | $0 | Jun 10, 2026 | Form 4 ↗ |
| KETCHUM RICHARD GDirector | Grant / award | +1,390 | $0.00 | $0 | Jun 10, 2026 | Form 4 ↗ |
| SCHICIANO KENNETH TDirector | Grant / award | +1,390 | $0.00 | $0 | Jun 10, 2026 | Form 4 ↗ |
| Begleiter Steven LDirector | Grant / award | +1,390 | $0.00 | $0 | Jun 10, 2026 | Form 4 ↗ |
| HERNANDEZ CARLOS MAURICIODirector | Grant / award | +2,616 | $0.00 | $0 | Jun 10, 2026 | Form 4 ↗ |
| Cruger William Frank Jr.Director | Grant / award | +1,390 | $0.00 | $0 | Jun 10, 2026 | Form 4 ↗ |
| Fiszel Bieler IleneChief Financial Officer | Tax withholding | −332 | $123.18 | $41K | Jun 3, 2026 | Form 4 ↗ |
| Pintoff ScottGeneral Counsel and Secretary | Sale | −100 | $146.99 | $15K | May 11, 2026 | Form 4 ↗ |
Fund Holders
Mutual funds and ETFs holding MKTX · SEC Form N-PORT
| Fund | Shares | Value | % of fund | As of |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF iShares Trust | 2.1M | $241.2M | 0.22% | Jun 30, 2026 |
| VANGUARD CAPITAL OPPORTUNITY FUND VANGUARD HORIZON FUNDS | 1.8M | $208.0M | 0.64% | Jun 30, 2026 |
| PRIMECAP Odyssey Aggressive Growth Fund PRIMECAP Odyssey Funds | 939.2K | $152.4M | 2.06% | Jul 31, 2026 |
| VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS | 1.1M | $121.7M | 0.01% | Jun 30, 2026 |
| VANGUARD SMALL-CAP INDEX FUND VANGUARD INDEX FUNDS | 773.4K | $87.8M | 0.05% | Jun 30, 2026 |
| VanEck Morningstar Wide Moat ETF VanEck ETF Trust | 753.0K | $85.5M | 0.74% | Jun 30, 2026 |
| Neuberger Genesis Fund NEUBERGER BERMAN EQUITY FUNDS | 582.4K | $75.7M | 1.03% | May 31, 2026 |
| PRIMECAP Odyssey Growth Fund PRIMECAP Odyssey Funds | 395.1K | $64.1M | 1.06% | Jul 31, 2026 |
| Fidelity Series Stock Selector Large Cap Value Fund Fidelity Devonshire Trust | 337.5K | $53.1M | 0.34% | Apr 30, 2026 |
| VANGUARD EXTENDED MARKET INDEX FUND VANGUARD INDEX FUNDS | 407.6K | $46.3M | 0.05% | Jun 30, 2026 |
Mutual funds and ETFs whose N-PORT filings list MKTX's shares (CUSIP 57060D108), each fund at its latest report since Mar 7, 2026, largest positions first. Bonds, options and short positions are left out.
Activist & Passive Stakes
Schedule 13D / 13G beneficial-ownership filings
- James Hanna, IIISCHEDULE 13G/A · passive (13G) · 3.4M shares9.6%
Aug 14, 2026 · ↗ - North Reef Capital Management GP LLCSCHEDULE 13G/A · passive (13G) · 3.4M shares9.6%
Aug 14, 2026 · ↗ - North Reef Capital Management LPSCHEDULE 13G/A · passive (13G) · 3.4M shares9.6%
Aug 14, 2026 · ↗ - AQR Capital Management Holdings, LLCSCHEDULE 13G/A · passive (13G) · 2.0M shares5.6%
Aug 13, 2026 · ↗ - AQR Capital Management, LLCSCHEDULE 13G/A · passive (13G) · 2.0M shares5.6%
Aug 13, 2026 · ↗ - PRIMECAP MANAGEMENT CO/CA/SCHEDULE 13G/A · passive (13G) · 3.5M shares9.9%
Aug 6, 2026 · ↗ - James Hanna, IIISCHEDULE 13G · passive (13G) · 1.9M shares5.3%
May 15, 2026 · ↗ - North Reef Capital Management GP LLCSCHEDULE 13G · passive (13G) · 1.9M shares5.3%
May 15, 2026 · ↗ - North Reef Capital Management LPSCHEDULE 13G · passive (13G) · 1.9M shares5.3%
May 15, 2026 · ↗ - Abigail P. JohnsonSCHEDULE 13G/A · passive (13G) · 1.5M shares4.2%
May 6, 2026 · ↗
Corporate Lobbying
Estimated quarterly lobbying spending reported under the LDA, filings naming marketaxess as client
- O'NEIL BRADLEY CONSULTING LLCMARKETAXESS HOLDINGS INC. · 2025 Q4 · FIN$30K
Filing ↗ - O'NEIL BRADLEY CONSULTING LLCMARKETAXESS HOLDINGS INC. · 2025 Q4 · FIN$30K
Filing ↗ - O'NEIL BRADLEY CONSULTING LLCMARKETAXESS HOLDINGS INC. · 2025 Q3$30K
Filing ↗ - O'NEIL BRADLEY CONSULTING LLCMARKETAXESS HOLDINGS INC. · 2025 Q2 · FIN$30K
Filing ↗ - O'NEIL BRADLEY CONSULTING LLCMARKETAXESS HOLDINGS INC. · 2025 Q1 · FIN$30K
Filing ↗
Government Contracts
Federal awards to MARKETAXESS HOLDINGS INC · USAspending
No federal contract awards found for MARKETAXESS HOLDINGS INC.
U.S. Patents
Recent USPTO applications naming MARKETAXESS HOLDINGS INC
No USPTO patent applications found for MARKETAXESS HOLDINGS INC.
Annual Financials
From MKTX's 10-K filings · XBRL
No annual XBRL figures on record for MKTX. KeyVex's fundamentals cover about 130 large companies so far.
Stock Splits
Every split and reverse split in the price history
No stock splits in MKTX's price history.
Material Events (8-K)
Corporate events filed with the SEC
- 8-K · Items 8.01Other eventsSep 29, 2026
EDGAR ↗ - 8-K · Items 2.02, 8.01, 9.01Results of operations · Other eventsJul 30, 2026
EDGAR ↗ - 8-K · Items 1.01, 5.02, 7.01, 9.01Material agreement · Officer / director change · Reg FD disclosureJul 30, 2026
EDGAR ↗ - 8-K · Items 5.07Shareholder voteJun 10, 2026
EDGAR ↗ - 8-K · Items 2.02, 8.01, 9.01Results of operations · Other eventsMay 7, 2026
EDGAR ↗
About MARKETAXESS HOLDINGS INC
From SEC EDGAR company records
Industry (SIC 6211)Security Brokers, Dealers & Flotation Companies
SectorFinancials
HeadquartersNEW YORK, NY
SEC CIK0001278021 ↗
Former namesMARKETAXESS HOLDINGS INC, MARKETAXESS HOLDING INC