Jane Street
MKTX icon

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 – 12451
2025
Q4 		$254K Sell
1,400
-3,400
-71% -$580K ﹤0.01% 9207
2025
Q3 		$836K Buy
4,800
+3,800
+380% +$743K ﹤0.01% 6712
2025
Q2 		$223K Sell
1,000
-100
-9% -$22K ﹤0.01% 8366
2025
Q1 		$238K Buy
+1,100
New +$231K ﹤0.01% 8188
2024
Q4 		– Sell
-11,900
Closed -$3.05M – 10118
2024
Q3 		$3.05M Buy
11,900
+4,500
+61% +$1.05M ﹤0.01% 3688
2024
Q2 		$1.48M Sell
7,400
-1,200
-14% -$247K ﹤0.01% 5031
2024
Q1 		$1.89M Buy
8,600
+900
+12% +$213K ﹤0.01% 4233
2023
Q4 		$2.25M Sell
7,700
-2,700
-26% -$653K ﹤0.01% 4118
2023
Q3 		$2.22M Buy
10,400
+9,400
+940% +$2.28M ﹤0.01% 3874
2023
Q2 		$261K Sell
1,000
-5,900
-86% -$1.76M ﹤0.01% 7327
2023
Q1 		$2.7M Sell
6,900
-1,800
-21% -$637K ﹤0.01% 3320
2022
Q4 		$2.43M Sell
8,700
-15,500
-64% -$3.99M ﹤0.01% 3557
2022
Q3 		$5.38M Buy
24,200
+3,100
+15% +$796K ﹤0.01% 2497
2022
Q2 		$5.4M Sell
21,100
-400
-2% -$109K ﹤0.01% 2550
2022
Q1 		$7.31M Sell
21,500
-500
-2% -$181K ﹤0.01% 2430
2021
Q4 		$9.05M Sell
22,000
-2,900
-12% -$1.14M ﹤0.01% 2011
2021
Q3 		$10.5M Buy
24,900
+16,000
+180% +$7.34M ﹤0.01% 1754
2021
Q2 		$4.13M Sell
8,900
-3,900
-30% -$1.86M ﹤0.01% 2982
2021
Q1 		$6.37M Buy
12,800
+4,900
+62% +$2.61M ﹤0.01% 2058
2020
Q4 		$4.51M Buy
7,900
+1,200
+18% +$654K ﹤0.01% 2265
2020
Q3 		$3.23M Buy
6,700
+2,100
+46% +$1.04M ﹤0.01% 2349
2020
Q2 		$2.3M Sell
4,600
-1,600
-26% -$745K ﹤0.01% 2867
2020
Q1 		$2.06M Sell
6,200
-1,900
-23% -$662K ﹤0.01% 1996
2019
Q4 		$3.07M Sell
8,100
-6,000
-43% -$2.2M ﹤0.01% 1488
2019
Q3 		$4.62M Buy
+14,100
New +$5.05M 0.01% 1056

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.