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Horizon Investments’s MarketAxess Holdings MKTX Stock Holding History

Horizon Investments’s Portfolio MKTX Stock Details MKTX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$152K Buy
+921
New +$161K ﹤0.01% 1027
2025
Q4 		– Sell
-8,205
Closed -$1.43M – 1359
2025
Q3 		$1.43M Buy
8,205
+2,126
+35% +$416K 0.02% 557
2025
Q2 		$1.36M Buy
6,079
+5,530
+1,007% +$1.22M 0.02% 490
2025
Q1 		$119K Buy
549
+34
+7% +$7.14K ﹤0.01% 611
2024
Q4 		$116K Buy
515
+3
+0.6% +$790 ﹤0.01% 607
2024
Q3 		$131K Sell
512
-168
-25% -$39.4K ﹤0.01% 592
2024
Q2 		$136K Buy
680
+7
+1% +$1.44K ﹤0.01% 609
2024
Q1 		$148K Buy
673
+4
+0.6% +$945 ﹤0.01% 595
2023
Q4 		$195K Buy
669
+118
+21% +$28.5K 0.01% 531
2023
Q3 		$117K Sell
551
-41
-7% -$9.94K ﹤0.01% 600
2023
Q2 		$154K Sell
592
-39
-6% -$11.6K ﹤0.01% 573
2023
Q1 		$246K Sell
631
-110
-15% -$39K 0.01% 452
2022
Q4 		$206K Buy
+741
New +$191K 0.01% 523
2022
Q1 		– Sell
-1,940
Closed -$796K – 524
2021
Q4 		$796K Buy
1,940
+119
+7% +$46.9K 0.02% 245
2021
Q3 		$765K Sell
1,821
-998
-35% -$458K 0.02% 248
2021
Q2 		$1.3M Buy
2,819
+2,139
+315% +$1.02M 0.04% 183
2021
Q1 		$339K Buy
+680
New +$363K 0.01% 360
2020
Q4 		– Sell
-1,649
Closed -$793K – 281
2020
Q3 		$793K Sell
1,649
-1,351
-45% -$668K 0.03% 209
2020
Q2 		$1.5M Buy
+3,000
New +$1.4M 0.04% 180
2020
Q1 		– Sell
-933
Closed -$354K – 429
2019
Q4 		$354K Buy
933
+51
+6% +$18.7K 0.02% 362
2019
Q3 		$289K Buy
+882
New +$316K 0.01% 256

Other funds holding MKTX

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
NRCM
North Reef Capital Management Laguna Beach, California $2.91B AUM 11.03% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
VanEck Associates
VanEck Associates New York $133B AUM 72.99% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

Horizon Investments's MKTX Position: Q1 2026 in Review

Horizon Investments opened a new position in MarketAxess Holdings (MKTX) in Q1 2026: 921 shares worth $152K. The stake represents ﹤0.01% of the portfolio and ranks #1027 among its holdings. This is a return to the name: Horizon Investments previously reported a position in MKTX as recently as Q3 2025.

Horizon Investments first reported a position in MKTX in Q3 2019 and has held it in 21 quarters since. The position peaked at $1.5M in Q2 2020. 450 funds tracked by Wall St. Rank hold MKTX as of Q1 2026.

  • Horizon Investments held 921 shares of MarketAxess Holdings worth $152K as of Q1 2026.
  • MarketAxess Holdings was a new Horizon Investments position in Q1 2026.
  • MarketAxess Holdings made up ﹤0.01% of Horizon Investments's portfolio in Q1 2026, its #1027 holding.
  • Horizon Investments first reported a position in MarketAxess Holdings in Q3 2019 and has held it in 21 quarters since.
  • Horizon Investments's MarketAxess Holdings position peaked at $1.5M in Q2 2020.
  • 450 funds tracked by Wall St. Rank held MarketAxess Holdings as of Q1 2026.

Based on Horizon Investments's 13F filing for Q1 2026, filed 15 May 2026.