| Scott Pintoff |
MKTX |
Common Stock, par value $0.003 per share |
Sale |
-0.82% |
$18,493 |
$184.93 |
-100 |
12,086 |
10 Mar 2026 |
Direct |
| Douglas A. Cifu |
MKTX |
Common Stock, par value $0.003 per share |
Award |
|
|
|
259 |
259 |
01 Mar 2026 |
Direct |
| Kenneth T. Schiciano |
MKTX |
Common Stock, par value $0.003 per share |
Award |
87.5% |
|
|
259 |
555 |
01 Mar 2026 |
Direct |
| Naineshkumar S. Panchal |
MKTX |
Common Stock, par value $0.003 per share |
Tax liability |
-11.5% |
|
|
-1,470 |
11,331 |
01 Mar 2026 |
Direct |
| Christopher R. Concannon |
MKTX |
Common Stock, par value $0.003 per share |
Award |
13.4% |
|
|
6,588 |
55,699 |
15 Feb 2026 |
Direct |
| Christopher R. Concannon |
MKTX |
Common Stock, par value $0.003 per share |
Tax liability |
-5.06% |
|
|
-2,616 |
49,111 |
15 Feb 2026 |
Direct |
| Christopher R. Concannon |
MKTX |
Stock Option (right to buy) |
Award |
|
|
|
21,736 |
21,736 |
15 Feb 2026 |
Direct |
| Ilene Fiszel Bieler |
MKTX |
Common Stock, par value $0.003 per share |
Tax liability |
-4.66% |
|
|
-439 |
8,988 |
15 Feb 2026 |
Direct |
| Ilene Fiszel Bieler |
MKTX |
Common Stock, par value $0.003 per share |
Award |
113.2% |
|
|
5,005 |
9,427 |
15 Feb 2026 |
Direct |
| Scott Pintoff |
MKTX |
Common Stock, par value $0.003 per share |
Award |
32.2% |
|
|
3,165 |
13,010 |
15 Feb 2026 |
Direct |
| Scott Pintoff |
MKTX |
Common Stock, par value $0.003 per share |
Tax liability |
-9.49% |
|
|
-1,032 |
9,845 |
15 Feb 2026 |
Direct |
| Naineshkumar S. Panchal |
MKTX |
Common Stock, par value $0.003 per share |
Award |
30.6% |
|
|
3,239 |
13,817 |
15 Feb 2026 |
Direct |
| Naineshkumar S. Panchal |
MKTX |
Common Stock, par value $0.003 per share |
Tax liability |
-10% |
|
|
-1,175 |
10,578 |
15 Feb 2026 |
Direct |
| Kevin M. McPherson |
MKTX |
Common Stock, par value $0.003 per share |
Award |
6.48% |
|
|
4,416 |
72,574 |
15 Feb 2026 |
Direct |
| Kevin M. McPherson |
MKTX |
Common Stock, par value $0.003 per share |
Tax liability |
-2.83% |
|
|
-1,987 |
68,158 |
15 Feb 2026 |
Direct |
| Nitin A. Mirwani |
MKTX |
Common Stock, par value $0.003 per share |
Award |
|
|
|
1,766 |
1,766 |
15 Feb 2026 |
Direct |
| Christopher R. Concannon |
MKTX |
Common Stock, par value $0.003 per share |
Award |
3.51% |
|
|
1,696 |
49,977 |
13 Feb 2026 |
Direct |
| Scott Pintoff |
MKTX |
Common Stock, par value $0.003 per share |
Award |
5.4% |
|
|
515 |
10,053 |
13 Feb 2026 |
Direct |
| Naineshkumar S. Panchal |
MKTX |
Common Stock, par value $0.003 per share |
Award |
3.81% |
|
|
394 |
10,737 |
13 Feb 2026 |
Direct |
| Kevin M. McPherson |
MKTX |
Common Stock, par value $0.003 per share |
Award |
1.39% |
|
|
939 |
68,620 |
13 Feb 2026 |
Direct |
| Scott Pintoff |
MKTX |
Common Stock, par value $0.003 per share |
Sale |
-1.04% |
$17,191 |
$171.91 |
-100 |
9,538 |
10 Feb 2026 |
Direct |
| Scott Pintoff |
MKTX |
Common Stock, par value $0.003 per share |
Sale |
-1.03% |
$16,863 |
$168.63 |
-100 |
9,638 |
12 Jan 2026 |
Direct |
| Scott Pintoff |
MKTX |
Common Stock, par value $0.003 per share |
Sale |
-1.02% |
$17,785 |
$177.85 |
-100 |
9,738 |
12 Dec 2025 |
Direct |
| Carlos M. Hernandez |
MKTX |
Common Stock, par value $0.003 per share |
Gift |
246.9% |
|
|
7,466 |
10,490 |
25 Nov 2025 |
Direct |
| Carlos M. Hernandez |
MKTX |
Common Stock, par value $0.003 per share |
Gift |
-100% |
|
|
-7,466 |
0 |
25 Nov 2025 |
By GRAT 1 |
| Dean Berry |
MKTX |
Common Stock, par value $0.003 per share |
Award |
|
|
|
26,017 |
26,017 |
01 Oct 2025 |
Direct |
| Kevin M. McPherson |
MKTX |
Common Stock, par value $0.003 per share |
Sale |
-2.16% |
$276,868 |
$185.32 |
-1,494 |
67,681 |
12 Sep 2025 |
Direct |
| Stephen P. Casper |
MKTX |
Common Stock, par value $0.003 per share |
Sale |
-3.57% |
$298,544 |
$186.59 |
-1,600 |
43,208 |
08 Sep 2025 |
By family trust |
| Emily H. Portney |
MKTX |
Common Stock, par value $0.003 per share |
Gift |
|
|
|
3,656 |
3,656 |
13 Aug 2025 |
By GRAT |
| Emily H. Portney |
MKTX |
Common Stock, par value $0.003 per share |
Gift |
-82.3% |
|
|
-3,656 |
784 |
13 Aug 2025 |
Direct |
| Kevin M. McPherson |
MKTX |
Common Stock, par value $0.003 per share |
Sale |
-2.81% |
$449,540 |
$224.77 |
-2,000 |
69,175 |
11 Jun 2025 |
Direct |
| Nancy A. Altobello |
MKTX |
Common Stock, par value $0.003 per share |
Award |
26.3% |
|
|
784 |
3,762 |
04 Jun 2025 |
Direct |
| Emily H. Portney |
MKTX |
Common Stock, par value $0.003 per share |
Award |
21.4% |
|
|
784 |
4,440 |
04 Jun 2025 |
Direct |
| Stephen P. Casper |
MKTX |
Common Stock, par value $0.003 per share |
Award |
8.52% |
|
|
784 |
9,985 |
04 Jun 2025 |
Direct |
| Richard G. Ketchum |
MKTX |
Common Stock, par value $0.003 per share |
Award |
20% |
|
|
784 |
4,703 |
04 Jun 2025 |
Direct |
| Roberto Hoornweg |
MKTX |
Common Stock, par value $0.003 per share |
Award |
364.6% |
|
|
784 |
999 |
04 Jun 2025 |
Direct |
| Jane Chwick |
MKTX |
Common Stock, par value $0.003 per share |
Award |
10.2% |
|
|
784 |
8,439 |
04 Jun 2025 |
Direct |
| Kourtney Gibson |
MKTX |
Common Stock, par value $0.003 per share |
Award |
33.1% |
|
|
784 |
3,152 |
04 Jun 2025 |
Direct |
| William Frank Cruger Jr. |
MKTX |
Common Stock, par value $0.003 per share |
Award |
9.77% |
|
|
784 |
8,807 |
04 Jun 2025 |
Direct |
| Carlos M. Hernandez |
MKTX |
Common Stock, par value $0.003 per share |
Award |
95.2% |
|
|
1,475 |
3,024 |
04 Jun 2025 |
Direct |
| Steven L. Begleiter |
MKTX |
Common Stock, par value $0.003 per share |
Award |
7.92% |
|
|
784 |
10,684 |
04 Jun 2025 |
Direct |
| Ilene Fiszel Bieler |
MKTX |
Common Stock, par value $0.003 per share |
Tax liability |
-5.19% |
|
|
-242 |
4,422 |
03 Jun 2025 |
Direct |
| Kevin M. McPherson |
MKTX |
Common Stock, par value $0.003 per share |
Gift |
-0.35% |
|
|
-250 |
71,175 |
15 May 2025 |
Direct |
| Christophe Pierre Daniel Roupie |
MKTX |
Common Stock, par value $0.003 per share |
Sale |
-12.6% |
$250,213 |
$210.44 |
-1,189 |
8,208 |
14 May 2025 |
Direct |
| Michael R. Cianciulli |
MKTX |
Common Stock, par value $0.003 per share |
Award |
25.1% |
|
|
232 |
1,155 |
01 Apr 2025 |
Direct |
| Carlos M. Hernandez |
MKTX |
Common Stock, par value $0.003 per share |
Gift |
|
|
|
12,480 |
12,480 |
20 Mar 2025 |
By GRAT 2 |
| Carlos M. Hernandez |
MKTX |
Common Stock, par value $0.003 per share |
Gift |
-89% |
|
|
-12,480 |
1,549 |
20 Mar 2025 |
Direct |
| Carlos M. Hernandez |
MKTX |
Common Stock, par value $0.003 per share |
Gift |
805.7% |
|
|
12,480 |
14,029 |
03 Mar 2025 |
Direct |
| Carlos M. Hernandez |
MKTX |
Common Stock, par value $0.003 per share |
Gift |
-62.6% |
|
|
-12,480 |
7,466 |
03 Mar 2025 |
By GRAT |
| Naineshkumar S. Panchal |
MKTX |
Common Stock, par value $0.003 per share |
Tax liability |
-13.2% |
|
|
-1,574 |
10,343 |
01 Mar 2025 |
Direct |