XT
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XTX Topco’s MarketAxess Holdings MKTX Stock Holding History

XTX Topco’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 		$1.62M Sell
9,828
-4,404
-31% -$772K 0.03% 1001
2025
Q4 		$2.58M Buy
14,232
+12,909
+976% +$2.2M 0.07% 415
2025
Q3 		$231K Sell
1,323
-554
-30% -$108K 0.01% 1727
2025
Q2 		$419K Sell
1,877
-7,654
-80% -$1.68M 0.02% 1223
2025
Q1 		$2.06M Buy
9,531
+8,254
+646% +$1.73M 0.11% 250
2024
Q4 		$289K Buy
+1,277
New +$336K 0.02% 1251
2024
Q1 		– Sell
-1,269
Closed -$372K – 2138
2023
Q4 		$372K Sell
1,269
-4,768
-79% -$1.15M 0.08% 460
2023
Q3 		$1.29M Buy
+6,037
New +$1.46M 0.22% 48
2021
Q3 		– Sell
-2,228
Closed -$1.03M – 919
2021
Q2 		$1.03M Buy
2,228
+1,623
+268% +$773K 0.35% 37
2021
Q1 		$301K Buy
+605
New +$323K 0.15% 272

Other funds holding MKTX

BlackRock
BlackRock New York $5.72T AUM 30.48% 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 $2.9T AUM 29.55% 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