MKTX

SEC EDGAR filings — 10-K/Q, 8-K, Form 4 insider transactions, offerings, ownership reports.

80 filings

4
4
xslF345X06/ownership.xml
2026-04-10
5d ago
5 KB ↗
4
4
xslF345X06/ownership.xml
2026-04-06
9d ago
5 KB ↗
SCHEDULE 13G/A
SCHEDULE 13G/A
xslSCHEDULE_13G_X02/primary_doc.xml
2026-03-27
19d ago
7 KB ↗
3
3
xslF345X02/ownership.xml
2026-03-16
1mo ago
17 KB ↗
4
4
xslF345X05/ownership.xml
2026-03-10
1mo ago
5 KB ↗
4
4
xslF345X05/ownership.xml
2026-03-02
1mo ago
5 KB ↗
4
4
xslF345X05/ownership.xml
2026-03-02
1mo ago
5 KB ↗
4
4
xslF345X05/ownership.xml
2026-03-02
1mo ago
5 KB ↗
3
3
xslF345X02/ownership.xml
2026-03-02
1mo ago
17 KB ↗
3
3
xslF345X02/ownership.xml
2026-03-02
1mo ago
17 KB ↗
10-K
10-K
mktx-20251231.htm
2026-02-24
1mo ago
27.3 MB ↗
8-K
8-K
mktx-20260216.htm· Items: 5.02
2026-02-17
1mo ago
147 KB ↗
4
4
xslF345X05/ownership.xml
2026-02-17
1mo ago
12 KB ↗
4
4
xslF345X05/ownership.xml
2026-02-17
1mo ago
7 KB ↗
4
4
xslF345X05/ownership.xml
2026-02-17
1mo ago
10 KB ↗
4
4
xslF345X05/ownership.xml
2026-02-17
1mo ago
10 KB ↗
4
4
xslF345X05/ownership.xml
2026-02-17
1mo ago
10 KB ↗
4
4
xslF345X05/ownership.xml
2026-02-17
1mo ago
5 KB ↗
SCHEDULE 13G
SCHEDULE 13G
xslSCHEDULE_13G_X01/primary_doc.xml
2026-02-13
2mo ago
9 KB ↗
SCHEDULE 13G/A
SCHEDULE 13G/A
xslSCHEDULE_13G_X01/primary_doc.xml
2026-02-11
2mo ago
7 KB ↗
4
4
xslF345X05/ownership.xml
2026-02-10
2mo ago
5 KB ↗
SCHEDULE 13G/A
SCHEDULE 13G/A
xslSCHEDULE_13G_X01/primary_doc.xml
2026-02-06
2mo ago
11 KB ↗
8-K
8-K
mktx-20260204.htm· Items: 1.01,2.02,2.03,8.01,9.01
2026-02-06
2mo ago
3.8 MB ↗
8-K
8-K
mktx-20260122.htm· Items: 5.02,7.01,9.01
2026-01-26
2mo ago
220 KB ↗
SCHEDULE 13G
SCHEDULE 13G
xslSCHEDULE_13G_X01/primary_doc.xml
2026-01-21
2mo ago
11 KB ↗
4
4
xslF345X05/ownership.xml
2026-01-12
3mo ago
5 KB ↗
144
144
xsl144X01/primary_doc.xml
2026-01-12
3mo ago
6 KB ↗
4
4
xslF345X05/ownership.xml
2025-12-12
4mo ago
5 KB ↗
144
144
xsl144X01/primary_doc.xml
2025-12-12
4mo ago
4 KB ↗
8-K
8-K
mktx-20251209.htm· Items: 7.01,9.01
2025-12-09
4mo ago
281 KB ↗
4
4
xslF345X05/ownership.xml
2025-11-26
4mo ago
7 KB ↗
SCHEDULE 13G/A
SCHEDULE 13G/A
xslSCHEDULE_13G_X01/primary_doc.xml
2025-11-14
5mo ago
8 KB ↗
SCHEDULE 13G
SCHEDULE 13G
xslSCHEDULE_13G_X01/primary_doc.xml
2025-11-13
5mo ago
7 KB ↗
10-Q
10-Q
mktx-20250930.htm
2025-11-07
5mo ago
18.4 MB ↗
8-K
8-K
mktx-20251107.htm· Items: 2.02,8.01,9.01
2025-11-07
5mo ago
2.4 MB ↗
SCHEDULE 13G/A
SCHEDULE 13G/A
xslSCHEDULE_13G_X01/primary_doc.xml
2025-10-31
5mo ago
6 KB ↗
SCHEDULE 13G/A
SCHEDULE 13G/A
xslSCHEDULE_13G_X01/primary_doc.xml
2025-10-17
6mo ago
11 KB ↗
4
4
xslF345X05/ownership.xml
2025-10-02
6mo ago
5 KB ↗
3
3
xslF345X02/ownership.xml
2025-09-29
6mo ago
16 KB ↗
4
4
xslF345X05/ownership.xml
2025-09-15
7mo ago
5 KB ↗
144
144
xsl144X01/primary_doc.xml
2025-09-12
7mo ago
5 KB ↗
4
4
xslF345X05/ownership.xml
2025-09-09
7mo ago
5 KB ↗
4
4
xslF345X05/ownership.xml
2025-08-15
8mo ago
6 KB ↗
10-Q
10-Q
mktx-20250630.htm
2025-08-06
8mo ago
17.5 MB ↗
SCHEDULE 13G/A
SCHEDULE 13G/A
xslSCHEDULE_13G_X01/primary_doc.xml
2025-08-06
8mo ago
11 KB ↗
8-K
8-K
d63555d8k.htm· Items: 2.02,8.01,9.01
2025-08-06
8mo ago
521 KB ↗
3
3
xslF345X02/ownership.xml
2025-07-01
9mo ago
17 KB ↗
4
4
xslF345X05/ownership.xml
2025-06-11
10mo ago
5 KB ↗
144
144
xsl144X01/primary_doc.xml
2025-06-11
10mo ago
5 KB ↗
4
4
xslF345X05/ownership.xml
2025-06-05
10mo ago
16 KB ↗
4
4
xslF345X05/ownership.xml
2025-06-05
10mo ago
16 KB ↗
4
4
xslF345X05/ownership.xml
2025-06-05
10mo ago
17 KB ↗
4
4
xslF345X05/ownership.xml
2025-06-05
10mo ago
16 KB ↗
4
4
xslF345X05/ownership.xml
2025-06-05
10mo ago
5 KB ↗
4
4
xslF345X05/ownership.xml
2025-06-05
10mo ago
16 KB ↗
4
4
xslF345X05/ownership.xml
2025-06-05
10mo ago
16 KB ↗
4
4
xslF345X05/ownership.xml
2025-06-05
10mo ago
16 KB ↗
4
4
xslF345X05/ownership.xml
2025-06-05
10mo ago
6 KB ↗
4
4
xslF345X05/ownership.xml
2025-06-05
10mo ago
16 KB ↗
8-K
8-K
mktx-20250602.htm· Items: 5.02,5.07
2025-06-05
10mo ago
192 KB ↗
4
4
xslF345X05/ownership.xml
2025-06-03
10mo ago
5 KB ↗
4
4
xslF345X05/ownership.xml
2025-06-03
10mo ago
5 KB ↗
8-K
8-K
d942871d8k.htm· Items: 5.02,7.01,9.01
2025-05-21
10mo ago
480 KB ↗
4
4
xslF345X05/ownership.xml
2025-05-20
11mo ago
5 KB ↗
4
4
xslF345X05/ownership.xml
2025-05-15
11mo ago
5 KB ↗
144
144
xsl144X01/primary_doc.xml
2025-05-14
11mo ago
5 KB ↗
10-Q
10-Q
mktx-20250331.htm
2025-05-07
11mo ago
14.2 MB ↗
8-K
8-K
d783694d8k.htm· Items: 2.02,8.01,9.01
2025-05-07
11mo ago
388 KB ↗
ARS
ARS
ars_2024.pdf
2025-04-23
11mo ago
6.5 MB ↗
DEFA14A
DEFA14A
mktx_2025_defa14a.htm
2025-04-23
11mo ago
1.3 MB ↗
DEF 14A
DEF 14A
mktx-20250422.htm
2025-04-23
11mo ago
28.4 MB ↗
SCHEDULE 13G/A
SCHEDULE 13G/A
xslSCHEDULE_13G_X01/primary_doc.xml
2025-04-17
12mo ago
11 KB ↗
4
4
xslF345X05/ownership.xml
2025-03-21
1y ago
7 KB ↗
4
4
xslF345X05/ownership.xml
2025-03-10
1y ago
17 KB ↗
4
4
xslF345X05/ownership.xml
2025-03-03
1y ago
7 KB ↗
4
4
xslF345X05/ownership.xml
2025-03-03
1y ago
5 KB ↗
3
3
xslF345X02/ownership.xml
2025-03-03
1y ago
16 KB ↗
10-K
10-K
mktx-20241231.htm
2025-02-24
1y ago
26.0 MB ↗
4
4
xslF345X05/ownership.xml
2025-02-18
1y ago
19 KB ↗
4
4
xslF345X05/ownership.xml
2025-02-18
1y ago
17 KB ↗

Filings sourced directly from SEC EDGAR. Click any row to open the original document on sec.gov.

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