Simplex Trading’s MarketAxess Holdings MKTX Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q2 | $522K | Sell |
4,600
-5,600
| -55% | -$798K | ﹤0.01% | 3552 |
|
|
2026
Q1 | $1.68M | Buy |
10,200
+8,600
| +538% | +$1.51M | ﹤0.01% | 1985 |
|
|
2025
Q4 | $290K | Sell |
1,600
-500
| -24% | -$85.3K | ﹤0.01% | 3854 |
|
|
2025
Q3 | $365K | Sell |
2,100
-5,000
| -70% | -$978K | ﹤0.01% | 4219 |
|
|
2025
Q2 | $1.58M | Sell |
7,100
-16,500
| -70% | -$3.63M | ﹤0.01% | 2314 |
|
|
2025
Q1 | $5.11M | Buy |
23,600
+14,800
| +168% | +$3.11M | ﹤0.01% | 1292 |
|
|
2024
Q4 | $1.99M | Buy |
8,800
+8,200
| +1,367% | +$2.16M | ﹤0.01% | 2195 |
|
|
2024
Q3 | $153K | Sell |
600
-9,500
| -94% | -$2.23M | ﹤0.01% | 4788 |
|
|
2024
Q2 | $2.02M | Buy |
10,100
+2,200
| +28% | +$454K | ﹤0.01% | 2191 |
|
|
2024
Q1 | $1.73M | Sell |
7,900
-5,300
| -40% | -$1.25M | ﹤0.01% | 2556 |
|
|
2023
Q4 | $3.87M | Sell |
13,200
-15,400
| -54% | -$3.72M | ﹤0.01% | 1780 |
|
|
2023
Q3 | $6.11M | Buy |
28,600
+25,400
| +794% | +$6.16M | ﹤0.01% | 1206 |
|
|
2023
Q2 | $836K | Buy |
3,200
+800
| +33% | +$239K | ﹤0.01% | 2774 |
|
|
2023
Q1 | $939K | Buy |
2,400
+1,600
| +200% | +$567K | ﹤0.01% | 2654 |
|
|
2022
Q4 | $223K | Sell |
800
-3,000
| -79% | -$772K | ﹤0.01% | 4102 |
|
|
2022
Q3 | $845K | Sell |
3,800
-1,700
| -31% | -$436K | ﹤0.01% | 2850 |
|
|
2022
Q2 | $1.41M | Buy |
5,500
+3,700
| +206% | +$1.01M | ﹤0.01% | 2238 |
|
|
2022
Q1 | $612K | Buy |
1,800
+400
| +29% | +$145K | ﹤0.01% | 3580 |
|
|
2021
Q4 | $575K | Sell |
1,400
-1,800
| -56% | -$710K | ﹤0.01% | 3612 |
|
|
2021
Q3 | $1.49M | Hold |
3,200
| – | – | ﹤0.01% | 2552 |
|
|
2021
Q2 | $1.48M | Buy |
3,200
+3,174
| +12,208% | +$1.51M | ﹤0.01% | 2578 |
|
|
2021
Q1 | $1.29M | Buy |
26
+8
| +44% | +$4.27K | ﹤0.01% | 2116 |
|
|
2020
Q4 | $1.03M | Sell |
18
-22
| -55% | -$12K | ﹤0.01% | 2532 |
|
|
2020
Q3 | $1.93M | Sell |
40
-54
| -57% | -$26.7K | ﹤0.01% | 1563 |
|
|
2020
Q2 | $4.71M | Sell |
94
-26
| -22% | -$12.1K | 0.01% | 889 |
|
|
2020
Q1 | $3.99M | Buy |
120
+76
| +173% | +$26.5K | 0.01% | 816 |
|
|
2019
Q4 | $1.67M | Buy |
44
+15
| +52% | +$5.5K | ﹤0.01% | 1638 |
|
|
2019
Q3 | $949K | Buy |
29
+25
| +625% | +$8.95K | ﹤0.01% | 1974 |
|
|
2019
Q2 | $128K | Buy |
4
+2
| +100% | +$578 | ﹤0.01% | 3930 |
|
|
2019
Q1 | $49K | Buy |
+2
| New | +$453 | ﹤0.01% | 5029 |
|
|
2018
Q4 | – | Sell |
-9
| Closed | -$160K | – | 7501 |
|
|
2018
Q3 | $160K | Sell |
9
-2
| -18% | -$384 | ﹤0.01% | 3908 |
|
|
2018
Q2 | $217K | Buy |
11
+10
| +1,000% | +$2.07K | ﹤0.01% | 3384 |
|
|
2018
Q1 | $1K | Sell |
1
-1
| -50% | -$206 | ﹤0.01% | 5692 |
|
|
2017
Q4 | $2K | Buy |
+2
| New | +$377 | ﹤0.01% | 5217 |
|
|
2017
Q2 | – | Sell |
-10
| Closed | -$38K | – | 6515 |
|
|
2017
Q1 | $38K | Sell |
10
-62
| -86% | -$11.2K | ﹤0.01% | 2620 |
|
|
2016
Q4 | $18K | Sell |
72
-12
| -14% | -$1.91K | ﹤0.01% | 3130 |
|
|
2016
Q3 | $30K | Buy |
84
+74
| +740% | +$12K | ﹤0.01% | 2569 |
|
|
2016
Q2 | $15K | Buy |
+10
| New | +$1.33K | ﹤0.01% | 3167 |
|
|
2015
Q3 | – | Sell |
-2
| Closed | -$1K | – | 5917 |
|
|
2015
Q2 | $1K | Buy |
+2
| New | +$176 | ﹤0.01% | 4717 |
|
Other funds holding MKTX
NRCM
Simplex Trading's MKTX Position: Q2 2026 in Review
Simplex Trading opened a new position in MarketAxess Holdings (MKTX) in Q2 2026: 2,336 shares worth $265K. The stake represents ﹤0.01% of the portfolio and ranks #4371 among its holdings. This is a return to the name: Simplex Trading previously reported a position in MKTX as recently as Q4 2025.
Simplex Trading first reported a position in MKTX in Q3 2015 and has held it in 29 quarters since. The position peaked at $2.23M in Q3 2019. 396 funds tracked by Wall St. Rank hold MKTX as of Q2 2026.
- Simplex Trading held 2,336 shares of MarketAxess Holdings worth $265K as of Q2 2026.
- MarketAxess Holdings was a new Simplex Trading position in Q2 2026.
- MarketAxess Holdings made up ﹤0.01% of Simplex Trading's portfolio in Q2 2026, its #4371 holding.
- Simplex Trading first reported a position in MarketAxess Holdings in Q3 2015 and has held it in 29 quarters since.
- Simplex Trading's MarketAxess Holdings position peaked at $2.23M in Q3 2019.
- 396 funds tracked by Wall St. Rank held MarketAxess Holdings as of Q2 2026.
Based on Simplex Trading's 13F filing for Q2 2026, filed 12 Aug 2026.