← United States · Coverage record
US · SEC FORM 4
MARKETAXESS HOLDINGS INC
MKTX · Nasdaq · CIK 0001278021 · Financial Services · Capital Markets
INSIDER SIGNAL
0 qualifying P purchase groups
in the current 180-day scoring window
23 Form 4 transaction lines observed in the same window
7 sales · 16 option, withholding, award, gift or other lines
WHY NO ACTIVE SIGNAL?
Score anatomy
No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.
Why is there no score?
- No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
- Sales and other Form 4 activity remain visible as context and do not create a negative score.
Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.
Purchase breadth, concentration & cluster buying
These modules activate when qualifying purchases enter the 180-day research window.
Insider activity timeline
Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.
Showing the six most active owners; 8 additional owner(s) remain in Form 4 evidence.
SIGNAL HISTORY
Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2023-08-14 · CONCANNON CHRISTOPHER R.
Recent Form 4 activity
P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.
Market context
Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.
Short interest
Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.
- Shares short
- 3,205,371
- Previous report
- 2,347,202
- Avg daily volume
- 946,352
- Days to cover
- 3.4
FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.
Historical equity purchases
Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.
| Transaction date | Reporting owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2023-08-14 | CONCANNON CHRISTOPHER R | Purchase (P) | Common Stock, par value $0.003 per share | 4,270 | USD 238.42 | USD 1,018,060 | SEC filing ↗ |
| 2022-04-22 | Prager Richard Leon | Purchase (P) | Common Stock, par value $0.003 per share | 1,000 | USD 271.25 | USD 271,245 | SEC filing ↗ |
Form 4 evidence
52 transaction lines in the latest 365-day window; 822 in local history.
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-10-12 | Pintoff Scott | Sale (S) | Common Stock, par value $0.003 per share | 100 | USD 164.65 | USD 16,465 | SEC filing ↗ |
| 2026-09-10 | Pintoff Scott | Sale (S) | Common Stock, par value $0.003 per share | 100 | USD 163.32 | USD 16,332 | SEC filing ↗ |
| 2026-09-10 | Cruger William Frank Jr. | Sale (S) | Common Stock, par value $0.003 per share | 6,164 | USD 163.20 | USD 1,005,965 | SEC filing ↗ |
Show recent Form 4 evidence (30 grouped rows)
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-10-12 | Pintoff Scott | Sale (S) | Common Stock, par value $0.003 per share | 100 | USD 164.65 | USD 16,465 | SEC filing ↗ |
| 2026-09-10 | Pintoff Scott | Sale (S) | Common Stock, par value $0.003 per share | 100 | USD 163.32 | USD 16,332 | SEC filing ↗ |
| 2026-09-10 | Cruger William Frank Jr. | Sale (S) | Common Stock, par value $0.003 per share | 6,164 | USD 163.20 | USD 1,005,965 | SEC filing ↗ |
| 2026-08-12 | Portney Emily Hope | Gift (G) | Common Stock, par value $0.003 per share | 2,085 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-08-10 | Pintoff Scott | Sale (S) | Common Stock, par value $0.003 per share | 100 | USD 162.60 | USD 16,260 | SEC filing ↗ |
| 2026-08-07 | Chwick Jane | Gift (G) | Common Stock, par value $0.003 per share | 606 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-07-10 | Pintoff Scott | Sale (S) | Common Stock, par value $0.003 per share | 100 | USD 115.12 | USD 11,512 | SEC filing ↗ |
| 2026-06-18 | HERNANDEZ CARLOS MAURICIO | Gift (G) | Common Stock, par value $0.003 per share | 10,708 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-06-10 | SCHICIANO KENNETH T | Award / grant (A) | Common Stock, par value $0.003 per share | 1,390 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-06-10 | Portney Emily Hope | Award / grant (A) | Common Stock, par value $0.003 per share | 1,390 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-06-10 | Pintoff Scott | Sale (S) | Common Stock, par value $0.003 per share | 100 | USD 116.03 | USD 11,603 | SEC filing ↗ |
| 2026-06-10 | KETCHUM RICHARD G | Award / grant (A) | Common Stock, par value $0.003 per share | 1,390 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-06-10 | Hoornweg Roberto | Award / grant (A) | Common Stock, par value $0.003 per share | 1,390 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-06-10 | HERNANDEZ CARLOS MAURICIO | Award / grant (A) | Common Stock, par value $0.003 per share | 2,616 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-06-10 | Gibson Kourtney | Award / grant (A) | Common Stock, par value $0.003 per share | 1,390 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-06-10 | Cruger William Frank Jr. | Award / grant (A) | Common Stock, par value $0.003 per share | 1,390 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-06-10 | Cifu Douglas A | Award / grant (A) | Common Stock, par value $0.003 per share | 1,390 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-06-10 | Chwick Jane | Award / grant (A) | Common Stock, par value $0.003 per share | 1,390 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-06-10 | Begleiter Steven L | Award / grant (A) | Common Stock, par value $0.003 per share | 1,390 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-06-10 | Altobello Nancy A. | Award / grant (A) | Common Stock, par value $0.003 per share | 1,390 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-06-03 | Fiszel Bieler Ilene | Tax withholding (F) | Common Stock, par value $0.003 per share | 332 | USD 123.18 | USD 40,896 | SEC filing ↗ |
| 2026-05-11 | Pintoff Scott | Sale (S) | Common Stock, par value $0.003 per share | 100 | USD 146.99 | USD 14,699 | SEC filing ↗ |
| 2026-05-01 | Quan William | Award / grant (A) | Common Stock, par value $0.003 per share | 218 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-04-10 | Pintoff Scott | Sale (S) | Common Stock, par value $0.003 per share | 100 | USD 171.96 | USD 17,196 | SEC filing ↗ |
| 2026-04-03 | CONCANNON CHRISTOPHER R | Tax withholding (F) | Common Stock, par value $0.003 per share | 349 | USD 171.46 | USD 59,840 | SEC filing ↗ |
| 2026-03-10 | Pintoff Scott | Sale (S) | Common Stock, par value $0.003 per share | 100 | USD 184.93 | USD 18,493 | SEC filing ↗ |
| 2026-03-01 | SCHICIANO KENNETH T | Award / grant (A) | Common Stock, par value $0.003 per share | 259 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-03-01 | Panchal Naineshkumar Shantilal | Tax withholding (F) | Common Stock, par value $0.003 per share | 1,470 | USD 192.00 | USD 282,240 | SEC filing ↗ |
| 2026-03-01 | Cifu Douglas A | Award / grant (A) | Common Stock, par value $0.003 per share | 259 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-15 | Pintoff Scott | Tax withholding (F) | Common Stock, par value $0.003 per share | 1,032 | USD 179.36 | USD 185,100 | SEC filing ↗ |
Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.
Snapshot & identity
| Snapshot date | 2026-10-19 |
|---|---|
| Ranking version | US-v1.2 |
| Data quality | PASS ELIGIBLE · — |
| Ticker | MKTX |
| CIK | 0001278021 |
| Sector | Financial Services |
| Industry | Capital Markets Yahoo Finance |
| SEC SIC | 6211 Security Brokers, Dealers & Flotation Companies |
| Exchange | Nasdaq |
Data coverage
| Local Form 4 history | 822 transaction lines from 2020-01-15 to 2026-10-12 8 P purchase lines · 362 S sale lines · 452 other lines |
|---|---|
| SEC company submissions | Open SEC filings ↗ |
Local ledger as of 2026-10-19. Mapping status is an audit field and does not erase SEC filing evidence.