MarketAxess (MKTX)
MarketAxess on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, financials, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as security brokers, dealers & flotation companies.
3.2M
Short interest
settlement 2026-09-30
3.4
Days to cover
+0.8 days vs prior
31.2%
Short share of volume
2026-10-09
41
Fails to deliver
settlement 2026-09-04
Fri 6 Nov
Next earnings
estimated date
-$1.0M
Insider flow, 90 days
0 buys, 3 sells
As of 2026-10-09.
Short interest
FINRA, twice a month. The newest 24 settlements in the table, 48 in the chart. JSONAs of 30 September 2026, short interest in MKTX is 3,205,371 shares, up 1,402,258 shares over the last month. Over the last 48 readings it ranged from 656,167 shares (15 November 2024) to 3,205,371 shares (30 September 2026). The latest reading sits at the top of that range. At the reported average volume of 946K shares a day that is 3.4 days to cover.
Embed this chart.The embed keeps its attribution line.
<iframe src="https://xoomar.com/embed/stocks/mktx" width="100%" height="440" style="border:0;max-width:100%" loading="lazy" title="XOOMAR chart"></iframe>
| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-09-30 | 3,205,371 | +36.6% | 946,352 | 3.39 |
| 2026-09-15 | 2,347,202 | +30.2% | 900,850 | 2.61 |
| 2026-08-31 | 1,803,113 | +35.2% | 1,040,353 | 1.73 |
| 2026-08-14 | 1,333,912 | -13.0% | 1,106,958 | 1.21 |
| 2026-07-31 | 1,533,503 | -27.1% | 1,544,316 | 1.00 |
| 2026-07-15 | 2,103,650 | -0.3% | 567,634 | 3.71 |
| 2026-06-30 | 2,109,978 | +2.8% | 882,538 | 2.39 |
| 2026-06-15 | 2,052,849 | -7.8% | 814,984 | 2.52 |
| 2026-05-29 | 2,227,806 | -6.6% | 664,473 | 3.35 |
| 2026-05-15 | 2,385,964 | +2.0% | 601,215 | 3.97 |
| 2026-04-30 | 2,339,451 | +11.7% | 435,727 | 5.37 |
| 2026-04-15 | 2,093,820 | +3.3% | 395,008 | 5.30 |
| 2026-03-31 | 2,026,474 | -9.3% | 429,749 | 4.72 |
| 2026-03-13 | 2,233,705 | +51.9% | 556,293 | 4.02 |
| 2026-02-27 | 1,470,800 | -19.2% | 484,090 | 3.04 |
| 2026-02-13 | 1,819,848 | -3.8% | 785,037 | 2.32 |
| 2026-01-30 | 1,892,153 | -7.8% | 369,434 | 5.12 |
| 2026-01-15 | 2,052,920 | -9.9% | 701,722 | 2.93 |
| 2025-12-31 | 2,278,747 | -17.3% | 688,050 | 3.31 |
| 2025-12-15 | 2,756,858 | +102.0% | 695,523 | 3.96 |
| 2025-11-28 | 1,364,812 | -1.6% | 569,972 | 2.39 |
| 2025-11-14 | 1,387,739 | -21.4% | 717,831 | 1.93 |
| 2025-10-31 | 1,764,539 | +9.7% | 545,222 | 3.24 |
| 2025-10-15 | 1,608,121 | +8.2% | 982,644 | 1.64 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 9 October 2026, the short share of MKTX volume is 31.2%, down 18.6 points over the last five sessions. Over the last 30 readings it ranged from 17.2% (31 August 2026) to 57.7% (9 September 2026). The latest reading is 9.6 points below the 30-session average of 40.7%, on 122K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-10-09 | 38K | 122K | 31.2% | 181 |
| 2026-10-08 | 28K | 72K | 38.8% | 50 |
| 2026-10-07 | 34K | 88K | 37.9% | 16 |
| 2026-10-06 | 36K | 148K | 24.4% | 32 |
| 2026-10-05 | 58K | 224K | 25.9% | 220 |
| 2026-10-02 | 93K | 187K | 49.8% | 85 |
| 2026-10-01 | 62K | 141K | 43.9% | 0 |
| 2026-09-30 | 119K | 255K | 46.4% | 2 |
| 2026-09-29 | 41K | 144K | 28.4% | 0 |
| 2026-09-28 | 110K | 208K | 52.9% | 0 |
| 2026-09-25 | 120K | 254K | 47.5% | 0 |
| 2026-09-24 | 48K | 146K | 33.2% | 72 |
| 2026-09-23 | 57K | 177K | 32.0% | 55 |
| 2026-09-22 | 101K | 196K | 51.7% | 304 |
| 2026-09-21 | 74K | 157K | 47.1% | 9 |
| 2026-09-18 | 75K | 167K | 44.6% | 3 |
| 2026-09-17 | 49K | 103K | 48.0% | 9 |
| 2026-09-16 | 83K | 168K | 49.6% | 32 |
| 2026-09-15 | 79K | 229K | 34.4% | 1 |
| 2026-09-14 | 99K | 210K | 46.9% | 7 |
| 2026-09-11 | 95K | 169K | 56.3% | 0 |
| 2026-09-10 | 83K | 195K | 42.5% | 129 |
| 2026-09-09 | 92K | 160K | 57.7% | 22 |
| 2026-09-08 | 144K | 253K | 56.7% | 0 |
| 2026-09-04 | 87K | 157K | 55.4% | 124 |
| 2026-09-03 | 89K | 268K | 33.2% | 33 |
| 2026-09-02 | 136K | 473K | 28.8% | 2 |
| 2026-09-01 | 108K | 293K | 36.9% | 4 |
| 2026-08-31 | 46K | 269K | 17.2% | 0 |
| 2026-08-28 | 78K | 337K | 23.2% | 107 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 4 September 2026, the fails-to-deliver balance in MKTX is 41 shares, down 159 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (10 July 2026) to 66,462 shares (4 February 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-09-04 | 41 | $163.34 | $7K |
| 2026-08-19 | 200 | $162.57 | $33K |
| 2026-08-04 | 92 | $162.28 | $15K |
| 2026-07-31 | 2,931 | $162.76 | $477K |
| 2026-07-30 | 4 | $125.73 | $503 |
| 2026-07-17 | 209 | $115.50 | $24K |
| 2026-07-10 | 1 | $113.98 | $114 |
| 2026-06-24 | 89 | $118.17 | $11K |
| 2026-06-23 | 674 | $117.12 | $79K |
| 2026-06-17 | 10 | $124.81 | $1K |
| 2026-06-16 | 96 | $121.00 | $12K |
| 2026-06-15 | 91 | $120.89 | $11K |
| 2026-06-12 | 41 | $116.33 | $5K |
| 2026-06-08 | 723 | $116.93 | $85K |
| 2026-06-05 | 952 | $120.62 | $115K |
| 2026-06-02 | 1,858 | $129.29 | $240K |
| 2026-05-28 | 110 | $130.94 | $14K |
| 2026-05-20 | 7,213 | $141.87 | $1.0M |
| 2026-04-21 | 2,915 | $164.96 | $481K |
| 2026-04-20 | 2,915 | $169.00 | $493K |
| 2026-04-07 | 800 | $175.15 | $140K |
| 2026-03-26 | 333 | $166.11 | $55K |
| 2026-03-24 | 19 | $170.66 | $3K |
| 2026-03-10 | 7,346 | $185.12 | $1.4M |
| 2026-03-09 | 7,190 | $186.11 | $1.3M |
| 2026-03-06 | 8,193 | $184.44 | $1.5M |
| 2026-03-02 | 64 | $192.00 | $12K |
| 2026-02-09 | 93 | $162.33 | $15K |
| 2026-02-05 | 26,513 | $162.37 | $4.3M |
| 2026-02-04 | 66,462 | $160.28 | $10.7M |
Insider trades
SEC Form 4, newest first, 50 of 100 shown. JSONInsiders at MKTX reported 3 open-market sells worth $1.0M in the last 90 days and no open-market buys. Latest filing: Pintoff Scott (General Counsel and Secretary) on 2026-09-10.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-09-10 | Pintoff Scott | General Counsel and Secretary | Sell | 100 | $163.32 | $16K | 11K |
| 2026-09-10 | Cruger William Frank Jr. | Director | Sell | 6K | $163.20 | $1.0M | 4K |
| 2026-08-12 | Portney Emily Hope | Director | Gift | 2K | $0.00 | $0 | 2K |
| 2026-08-12 | Portney Emily Hope | Director | Gift | 2K | $0.00 | $0 | 4K |
| 2026-08-10 | Pintoff Scott | General Counsel and Secretary | Sell | 100 | $162.60 | $16K | 12K |
| 2026-08-07 | Chwick Jane | Director | Gift | 606 | $0.00 | $0 | 9K |
| 2026-07-10 | Pintoff Scott | General Counsel and Secretary | Sell | 100 | $115.12 | $12K | 12K |
| 2026-06-18 | HERNANDEZ CARLOS MAURICIO | Director | Gift | 11K | $0.00 | $0 | 24K |
| 2026-06-18 | HERNANDEZ CARLOS MAURICIO | Director | Gift | 11K | $0.00 | $0 | 2K |
| 2026-06-10 | Cruger William Frank Jr. | Director | Grant | 1K | $0.00 | $0 | 10K |
| 2026-06-10 | HERNANDEZ CARLOS MAURICIO | Director | Grant | 3K | $0.00 | $0 | 13K |
| 2026-06-10 | Begleiter Steven L | Director | Grant | 1K | $0.00 | $0 | 12K |
| 2026-06-10 | SCHICIANO KENNETH T | Director | Grant | 1K | $0.00 | $0 | 2K |
| 2026-06-10 | KETCHUM RICHARD G | Director | Grant | 1K | $0.00 | $0 | 6K |
| 2026-06-10 | Hoornweg Roberto | Director | Grant | 1K | $0.00 | $0 | 2K |
| 2026-06-10 | Gibson Kourtney | Director | Grant | 1K | $0.00 | $0 | 5K |
| 2026-06-10 | Chwick Jane | Director | Grant | 1K | $0.00 | $0 | 10K |
| 2026-06-10 | Portney Emily Hope | Director | Grant | 1K | $0.00 | $0 | 2K |
| 2026-06-10 | Cifu Douglas A | Director | Grant | 1K | $0.00 | $0 | 2K |
| 2026-06-10 | Pintoff Scott | General Counsel and Secretary | Sell | 100 | $116.03 | $12K | 12K |
| 2026-06-10 | Altobello Nancy A. | Director | Grant | 1K | $0.00 | $0 | 5K |
| 2026-06-03 | Fiszel Bieler Ilene | Chief Financial Officer | Tax withholding | 332 | $123.18 | $41K | 9K |
| 2026-05-11 | Pintoff Scott | General Counsel and Secretary | Sell | 100 | $146.99 | $15K | 12K |
| 2026-05-01 | Quan William | Chief Technology Officer | Grant | 218 | $0.00 | $0 | 218 |
| 2026-04-10 | Pintoff Scott | General Counsel and Secretary | Sell | 100 | $171.96 | $17K | 12K |
| 2026-04-03 | CONCANNON CHRISTOPHER R | Chief Executive Officer | Tax withholding | 349 | $171.46 | $60K | 54K |
| 2026-03-10 | Pintoff Scott | General Counsel and Secretary | Sell | 100 | $184.93 | $18K | 12K |
| 2026-03-01 | SCHICIANO KENNETH T | Director | Grant | 259 | $0.00 | $0 | 555 |
| 2026-03-01 | Panchal Naineshkumar Shantilal | Chief Information Officer | Tax withholding | 1K | $192.00 | $282K | 11K |
| 2026-03-01 | Cifu Douglas A | Director | Grant | 259 | $0.00 | $0 | 259 |
| 2026-02-15 | Pintoff Scott | General Counsel and Secretary | Tax withholding | 824 | $179.36 | $148K | 12K |
| 2026-02-15 | Pintoff Scott | General Counsel and Secretary | Grant | 3K | $0.00 | $0 | 13K |
| 2026-02-15 | Pintoff Scott | General Counsel and Secretary | Tax withholding | 208 | $179.36 | $37K | 10K |
| 2026-02-15 | Panchal Naineshkumar Shantilal | Chief Information Officer | Tax withholding | 1K | $179.36 | $182K | 13K |
| 2026-02-15 | Panchal Naineshkumar Shantilal | Chief Information Officer | Grant | 3K | $0.00 | $0 | 14K |
| 2026-02-15 | Panchal Naineshkumar Shantilal | Chief Information Officer | Tax withholding | 159 | $179.36 | $29K | 11K |
| 2026-02-15 | McPherson Kevin M | Chief Revenue Officer | Tax withholding | 2K | $179.36 | $274K | 71K |
| 2026-02-15 | McPherson Kevin M | Chief Revenue Officer | Grant | 4K | $0.00 | $0 | 73K |
| 2026-02-15 | McPherson Kevin M | Chief Revenue Officer | Tax withholding | 462 | $179.36 | $83K | 68K |
| 2026-02-15 | Mirwani Nitin A | Chief Accounting Officer | Grant | 2K | $0.00 | $0 | 2K |
| 2026-02-15 | Fiszel Bieler Ilene | Chief Financial Officer | Tax withholding | 439 | $179.36 | $79K | 9K |
| 2026-02-15 | Fiszel Bieler Ilene | Chief Financial Officer | Grant | 5K | $0.00 | $0 | 9K |
| 2026-02-15 | CONCANNON CHRISTOPHER R | Chief Executive Officer | Tax withholding | 2K | $179.36 | $314K | 54K |
| 2026-02-15 | CONCANNON CHRISTOPHER R | Chief Executive Officer | Grant | 7K | $0.00 | $0 | 56K |
| 2026-02-15 | CONCANNON CHRISTOPHER R | Chief Executive Officer | Tax withholding | 866 | $179.36 | $155K | 49K |
| 2026-02-13 | Pintoff Scott | General Counsel and Secretary | Grant | 515 | $0.00 | $0 | 10K |
| 2026-02-13 | Panchal Naineshkumar Shantilal | Chief Information Officer | Grant | 394 | $0.00 | $0 | 11K |
| 2026-02-13 | McPherson Kevin M | Chief Revenue Officer | Grant | 939 | $0.00 | $0 | 69K |
| 2026-02-13 | CONCANNON CHRISTOPHER R | Chief Executive Officer | Grant | 2K | $0.00 | $0 | 50K |
| 2026-02-10 | Pintoff Scott | General Counsel and Secretary | Sell | 100 | $171.91 | $17K | 10K |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.
Planned sales (Form 144)
Newest first. JSON4 Form 144 notices on file for MKTX worth $178K at the prices reported; 1 in the last 90 days worth $49K. Latest: Pintoff Scott filed on 2026-08-10 to sell 300 shares ($49K) from 2026-08-10.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-08-10 | Pintoff ScottOfficer | 300 | $49K | 0.001% | 2026-08-10 | Charles Schwab & Co., Inc. |
| 2026-05-11 | Pintoff ScottOfficer | 300 | $44K | 0.001% | 2026-05-11 | Charles Schwab & Co., Inc. |
| 2026-01-12 | Pintoff ScottOfficer | 400 | $67K | 0.001% | 2026-01-12 | Charles Schwab & Co., Inc. |
| 2025-12-12 | Pintoff ScottOfficer | 100 | $18K | 0.000% | 2025-12-12 | Charles Schwab & Co., Inc. |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON9 holders report 5% or more of MKTX in their latest filing, all on Schedule 13G (passive). The largest reported stake is BlackRock, Inc. at 10.9% of the class (4,034,537 shares), filed 2026-02-06 for an event on 2026-01-31.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-08-14 | 13G/Ano. 1 | North Reef Capital Management LPinvestment adviser, partnership | 3.4M | 9.6% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 1 | North Reef Capital Management GP LLCother entity | 3.4M | 9.6% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 1 | James Hanna, IIIindividual | 3.4M | 9.6% | 2026-06-30 |
| 2026-08-13 | 13G/Ano. 1 | AQR Capital Management, LLCinvestment adviser | 2.0M | 5.6% | 2026-06-30 |
| 2026-08-13 | 13G/Ano. 1 | AQR Capital Management Holdings, LLCparent holding company | 2.0M | 5.6% | 2026-06-30 |
| 2026-08-06 | 13G/Ano. 3 | PRIMECAP MANAGEMENT CO/CA/investment adviser | 3.5M | 9.9% | 2026-06-30 |
| 2026-05-06 | 13G/Ano. 2 | FMR LLCparent holding company | 1.5M | 4.2% | 2026-03-31 |
| 2026-05-06 | 13G/Ano. 2 | Abigail P. Johnsonindividual | 1.5M | 4.2% | 2026-03-31 |
| 2026-04-30 | 13G | Vanguard Capital Managementinvestment adviser | 1.9M | 5.3% | 2026-03-31 |
| 2026-04-29 | 13G | Vanguard Portfolio Managementinvestment adviser | 2.2M | 6.1% | 2026-03-31 |
| 2026-03-27 | 13G/Ano. 14 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
| 2026-02-06 | 13G/Ano. 1 | BlackRock, Inc.parent holding company | 4.0M | 10.9% | 2026-01-31 |
| 2025-11-14 | 13G/Ano. 1 | T. Rowe Price Investment Management, Inc.investment adviser | 1.4M | 3.7% | 2025-09-30 |
13F holders
Tracked managers holding MKTX at their latest 13F. JSON8 of the 30 tracked managers held MKTX at their latest 13F, $381.4M in total at quarter-end prices. AQR Capital Management is the largest at $222.8M (0.1% of its portfolio) as of 2026-06-30. Over the prior quarter 5 added shares and 3 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| AQR Capital Management | 2026-06-30 | 2.0M | $222.8M | 0.08% | -696K |
| Two Sigma Investments | 2026-06-30 | 544K | $61.7M | 0.04% | +20K |
| Citadel Advisors | 2026-06-30 | 482K | $54.7M | 0.01% | +400K |
| Renaissance Technologies | 2026-06-30 | 200K | $22.7M | 0.03% | +33K |
| Millennium Management | 2026-06-30 | 110K | $12.4M | 0.00% | -978K |
| D. E. Shaw & Co. | 2026-06-30 | 48K | $5.4M | 0.00% | +45K |
| Point72 Asset Management | 2026-06-30 | 8K | $919K | 0.00% | -245K |
| Bridgewater Associates | 2026-06-30 | 7K | $797K | 0.00% | +1K |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
Financials
SEC XBRL, as filed. JSONIn Q2 FY 2026 (quarter ended 2026-06-30) MarketAxess reported revenue of $218.4M, down 0.5% from the same quarter a year earlier, and net income of $68.1M (1.93 diluted EPS). In FY 2025 it generated $382.1M of operating cash flow and spent $420.0M on buybacks.
- Cash
- $245.8M
- Equity
- $1.24B
- Total assets
- $2.42B
- Shares outstanding
- 35,192,891
Quarterly, last 8 quarters
| Quarter | Period end | Revenue | Net income | Margin | Diluted EPS |
|---|---|---|---|---|---|
| Q2 FY 2026 | 2026-06-30 | $218.4M | $68.1M | 31.2% | 1.93 |
| Q1 FY 2026 | 2026-03-31 | $233.4M | $77.9M | 33.4% | 2.20 |
| Q4 FY 2025derived | 2025-12-31 | $209.4M | $92.2M | 44.0% | n/a |
| Q3 FY 2025 | 2025-09-30 | $208.8M | $68.2M | 32.6% | 1.84 |
| Q2 FY 2025 | 2025-06-30 | $219.5M | $71.1M | 32.4% | 1.91 |
| Q1 FY 2025 | 2025-03-31 | $208.6M | $15.1M | 7.2% | 0.40 |
| Q4 FY 2024derived | 2024-12-31 | $202.4M | $65.1M | 32.2% | n/a |
| Q3 FY 2024 | 2024-09-30 | $206.7M | $71.5M | 34.6% | 1.90 |
Fiscal years, with buybacks and dividends
| Fiscal year | Ends | Revenue | Net income | Operating cash flow | Capex | Buybacks | Dividends |
|---|---|---|---|---|---|---|---|
| FY 2025 | 2025-12-31 | $846.3M | $246.6M | $382.1M | $8.2M | $420.0M | n/a |
| FY 2024 | 2024-12-31 | $817.1M | $274.2M | $385.2M | $9.9M | $75.5M | n/a |
| FY 2023 | 2023-12-31 | $752.5M | $258.1M | $333.8M | $9.3M | $0 | n/a |
| FY 2022 | 2022-12-31 | $718.3M | $250.2M | $289.2M | $13.1M | $87.5M | n/a |
| FY 2021 | 2021-12-31 | $699.0M | $257.9M | $282.1M | $17.5M | $63.2M | n/a |
Quarters are the three-month figures the company reports; a fourth quarter marked derived is the fiscal year less the three reported quarters, since companies report it only inside the 10-K. Fiscal years are the annual figures. Buybacks are the cash the company paid to repurchase its common stock in the year, not the amount authorized. Balance sheet lines are as of 2026-06-30; shares outstanding as of 2026-08-04 from the cover page.
What this page is
MarketAxess in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.
This page follows MarketAxess (MKTX), SEC CIK 1278021, listed on Nasdaq, classified by the SEC as security brokers, dealers & flotation companies. The cross-market tables live on the short interest and insider transactions hubs.
Source and updates
- Short interest
- FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-09-30.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-10-09.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-09-04.JSON and CSV
- Planned sales
- SEC EDGAR Form 144Source: SEC.New notices appear shortly after the SEC posts them; a notice is filed on or before the sale. Latest 2026-08-10.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-08-14.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Financials
- SEC EDGAR 10-K and 10-Q filingsSource: SEC.Weekly; values are as filed in the 10-Q and 10-K. Latest 2026-06-30.JSON and CSV
- Earnings dates
- SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-07-30.JSON and CSV
- Insider trades
- SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-09-10.JSON and CSV
- Company record
- EDGAR filing index for CIK 1278021Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 10 requests a minute without a key, 30 with a free key from a free account.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
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- SFStifel Financial
- VIRTVirtu Financial
- JEFJefferies Financial Group
- SEICSei Investments
- NAVINavient
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- WTWisdomTree
- NMRNomura Holdings
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- JSMNavient
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Other company pages
Datasets
Frequently Asked Questions
How much of MKTX is sold short?
What is MKTX's daily short volume?
Does MKTX have fails to deliver?
Are MKTX insiders buying or selling?
Have MKTX insiders filed to sell?
Who owns 5% or more of MKTX?
What did MKTX report last quarter?
Which tracked 13F managers own MKTX?
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