Jane Street
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Jane Street’s MarketAxess Holdings MKTX Stock Holding History

Jane Street’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 		– Sell
-1,400
Closed -$254K – 12450
2025
Q4 		$254K Sell
1,400
-200
-13% -$34.1K ﹤0.01% 9206
2025
Q3 		$279K Sell
1,600
-300
-16% -$58.7K ﹤0.01% 9051
2025
Q2 		$424K Buy
1,900
+200
+12% +$44K ﹤0.01% 7236
2025
Q1 		$368K Sell
1,700
-11,300
-87% -$2.37M ﹤0.01% 7463
2024
Q4 		$2.94M Sell
13,000
-1,200
-8% -$316K ﹤0.01% 3486
2024
Q3 		$3.64M Buy
14,200
+100
+0.7% +$23.4K ﹤0.01% 3392
2024
Q2 		$2.83M Buy
14,100
+5,900
+72% +$1.22M ﹤0.01% 3904
2024
Q1 		$1.8M Sell
8,200
-1,500
-15% -$354K ﹤0.01% 4317
2023
Q4 		$2.84M Sell
9,700
-10,500
-52% -$2.54M ﹤0.01% 3729
2023
Q3 		$4.32M Buy
20,200
+18,600
+1,163% +$4.51M ﹤0.01% 2820
2023
Q2 		$418K Sell
1,600
-5,500
-77% -$1.64M ﹤0.01% 6593
2023
Q1 		$2.78M Buy
7,100
+5,700
+407% +$2.02M ﹤0.01% 3272
2022
Q4 		$390K Sell
1,400
-10,100
-88% -$2.6M ﹤0.01% 6574
2022
Q3 		$2.56M Sell
11,500
-200
-2% -$51.3K ﹤0.01% 3744
2022
Q2 		$3M Sell
11,700
-5,900
-34% -$1.61M ﹤0.01% 3441
2022
Q1 		$5.99M Sell
17,600
-15,300
-47% -$5.55M ﹤0.01% 2736
2021
Q4 		$13.5M Buy
32,900
+26,400
+406% +$10.4M ﹤0.01% 1540
2021
Q3 		$2.73M Sell
6,500
-300
-4% -$138K ﹤0.01% 3847
2021
Q2 		$3.15M Buy
6,800
+1,700
+33% +$809K ﹤0.01% 3487
2021
Q1 		$2.54M Sell
5,100
-600
-11% -$320K ﹤0.01% 3570
2020
Q4 		$3.25M Sell
5,700
-1,700
-23% -$926K ﹤0.01% 2718
2020
Q3 		$3.56M Sell
7,400
-4,100
-36% -$2.03M ﹤0.01% 2233
2020
Q2 		$5.76M Buy
11,500
+9,900
+619% +$4.61M ﹤0.01% 1694
2020
Q1 		$532K Sell
1,600
-3,300
-67% -$1.15M ﹤0.01% 3566
2019
Q4 		$1.86M Buy
4,900
+100
+2% +$36.7K ﹤0.01% 2022
2019
Q3 		$1.57M Buy
+4,800
New +$1.72M ﹤0.01% 2076

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

Jane Street's MKTX Position: Q1 2026 in Review

Jane Street increased its MarketAxess Holdings (MKTX) stake by 2.8% in Q1 2026, buying an estimated $61K and bringing the position to 12,740 shares worth $2.1M. The position accounts for ﹤0.01% of the portfolio, ranked #4984.

Jane Street first reported a position in MKTX in Q4 2013 and has held it in 42 quarters since. The position peaked at $29.2M in Q3 2025. 448 funds tracked by Wall St. Rank hold MKTX as of Q1 2026.

  • Jane Street held 12,740 shares of MarketAxess Holdings worth $2.1M as of Q1 2026.
  • Jane Street bought 348 MarketAxess Holdings shares in Q1 2026, an estimated $61K.
  • MarketAxess Holdings made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #4984 holding.
  • Jane Street first reported a position in MarketAxess Holdings in Q4 2013 and has held it in 42 quarters since.
  • Jane Street's MarketAxess Holdings position peaked at $29.2M in Q3 2025.
  • 448 funds tracked by Wall St. Rank held MarketAxess Holdings as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.