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MKTX icon

Ossiam’s MarketAxess Holdings MKTX Stock Holding History

Ossiam’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
2025
Q3 		– Sell
-40,000
Closed -$8.93M – 721
2025
Q2 		$8.93M Sell
40,000
-58,000
-59% -$12.7M 0.1% 131
2025
Q1 		$21.2M Buy
+98,000
New +$20.6M 0.3% 58
2024
Q4 		– Sell
-5,523
Closed -$1.41M – 647
2024
Q3 		$1.41M Buy
5,523
+3,178
+136% +$745K 0.03% 283
2024
Q2 		$470K Sell
2,345
-17,447
-88% -$3.6M 0.01% 463
2024
Q1 		$4.34M Buy
19,792
+1,091
+6% +$258K 0.08% 154
2023
Q4 		$5.48M Buy
18,701
+14,961
+400% +$3.62M 0.09% 111
2023
Q3 		$799K Sell
3,740
-4,507
-55% -$1.09M 0.01% 386
2023
Q2 		$2.16M Buy
8,247
+12
+0.1% +$3.58K 0.04% 207
2023
Q1 		$3.22M Buy
8,235
+7,072
+608% +$2.5M 0.07% 155
2022
Q4 		$324K Buy
1,163
+560
+93% +$144K 0.01% 419
2022
Q3 		$134K Sell
603
-8,423
-93% -$2.16M ﹤0.01% 506
2022
Q2 		$2.31M Buy
9,026
+411
+5% +$112K 0.07% 159
2022
Q1 		$2.93M Buy
+8,615
New +$3.12M 0.08% 141
2021
Q3 		– Sell
-6,948
Closed -$3.3M – 450
2021
Q2 		$3.3M Buy
6,948
+5,018
+260% +$2.39M 0.09% 141
2021
Q1 		$961K Buy
+1,930
New +$1.03M 0.03% 228

Other funds holding MKTX

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
VanEck Associates
VanEck Associates New York $164B AUM 112.45% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
HSBC Holdings
HSBC Holdings London, United Kingdom $239B AUM 42.32% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
GAM
GuardCap Asset Management London, United Kingdom $1.41B AUM 8.17% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return

Ossiam's MKTX Position: Q3 2025 in Review

Ossiam sold out of MarketAxess Holdings (MKTX) in Q3 2025, closing a stake of 40,000 shares — an estimated $8.93M sold.

Ossiam first reported a position in MKTX in Q1 2021 and held it in 15 quarters. The position peaked at $21.2M in Q1 2025. 452 funds tracked by Wall St. Rank hold MKTX as of Q3 2025.

  • Ossiam reported no remaining MarketAxess Holdings position as of Q3 2025 after selling out during the quarter.
  • Ossiam sold 40,000 MarketAxess Holdings shares in Q3 2025, an estimated $8.93M.
  • Ossiam first reported a position in MarketAxess Holdings in Q1 2021 and held it in 15 quarters.
  • Ossiam's MarketAxess Holdings position peaked at $21.2M in Q1 2025.
  • 452 funds tracked by Wall St. Rank held MarketAxess Holdings as of Q3 2025.

Based on Ossiam's 13F filing for Q3 2025, filed 14 Nov 2025.