TSS
MKTX icon

Two Sigma Securities’s MarketAxess Holdings MKTX Stock Holding History

Two Sigma Securities’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 		$373K Sell
2,260
-3,193
-59% -$559K 0.04% 625
2025
Q4 		$988K Buy
5,453
+3,982
+271% +$680K 0.14% 174
2025
Q3 		$256K Buy
+1,471
New +$288K 0.04% 669
2025
Q2 		– Sell
-5,406
Closed -$1.17M – 1859
2025
Q1 		$1.17M Buy
+5,406
New +$1.14M 0.18% 129
2024
Q4 		– Sell
-2,398
Closed -$614K – 2596
2024
Q3 		$614K Sell
2,398
-215
-8% -$50.4K 0.01% 1169
2024
Q2 		$524K Buy
+2,613
New +$539K 0.01% 1504
2023
Q4 		– Sell
-2,375
Closed -$507K – 3377
2023
Q3 		$507K Buy
+2,375
New +$576K 0.01% 1533
2023
Q2 		– Sell
-539
Closed -$211K – 3134
2023
Q1 		$211K Buy
+539
New +$191K ﹤0.01% 2048
2022
Q4 		– Sell
-4,286
Closed -$1.1M – 3007
2022
Q3 		$954K Buy
4,286
+2,566
+149% +$659K 0.03% 670
2022
Q2 		$440K Buy
1,720
+691
+67% +$189K 0.02% 999
2022
Q1 		$350K Buy
+1,029
New +$373K 0.01% 1275
2020
Q1 		– Sell
-629
Closed -$219K – 1955
2019
Q4 		$238K Sell
629
-177
-22% -$64.9K ﹤0.01% 1962
2019
Q3 		$264K Buy
+806
New +$288K ﹤0.01% 1655
2018
Q2 		– Sell
-1,880
Closed -$409K – 2875
2018
Q1 		$409K Buy
+1,880
New +$387K ﹤0.01% 1797

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

Two Sigma Securities's MKTX Position: Q1 2026 in Review

Two Sigma Securities reduced its MarketAxess Holdings (MKTX) stake by 59% in Q1 2026, selling an estimated $559K and leaving 2,260 shares worth $373K. The position accounts for 0.04% of the portfolio, ranked #625.

Two Sigma Securities first reported a position in MKTX in Q1 2018 and has held it in 14 quarters since. The position peaked at $1.17M in Q1 2025. 448 funds tracked by Wall St. Rank hold MKTX as of Q1 2026.

  • Two Sigma Securities held 2,260 shares of MarketAxess Holdings worth $373K as of Q1 2026.
  • Two Sigma Securities sold 3,193 MarketAxess Holdings shares in Q1 2026, an estimated $559K.
  • MarketAxess Holdings made up 0.04% of Two Sigma Securities's portfolio in Q1 2026, its #625 holding.
  • Two Sigma Securities first reported a position in MarketAxess Holdings in Q1 2018 and has held it in 14 quarters since.
  • Two Sigma Securities's MarketAxess Holdings position peaked at $1.17M in Q1 2025.
  • 448 funds tracked by Wall St. Rank held MarketAxess Holdings as of Q1 2026.

Based on Two Sigma Securities's 13F filing for Q1 2026, filed 15 May 2026.