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Harbor Capital Advisors’s MarketAxess Holdings MKTX Stock Holding History

Harbor Capital Advisors’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
-225
Closed -$50K – 1433
2025
Q2 		$50K Sell
225
-32
-12% -$7.03K ﹤0.01% 699
2025
Q1 		$56K Buy
+257
New +$54K ﹤0.01% 697
2023
Q1 		– Sell
-299
Closed -$83.4K – 262
2022
Q4 		$83.4K Sell
299
-44
-13% -$11.3K 0.08% 102
2022
Q3 		$76K Sell
343
-241
-41% -$61.8K 0.07% 123
2022
Q2 		$150K Buy
584
+142
+32% +$38.8K 0.11% 113
2022
Q1 		$150K Buy
+442
New +$160K 0.07% 147

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 $3.38T AUM 44.17% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return

Harbor Capital Advisors's MKTX Position: Q3 2025 in Review

Harbor Capital Advisors sold out of MarketAxess Holdings (MKTX) in Q3 2025, closing a stake of 225 shares — an estimated $50K sold.

Harbor Capital Advisors first reported a position in MKTX in Q1 2022 and held it in 6 quarters. The position peaked at $150K in Q2 2022. 452 funds tracked by Wall St. Rank hold MKTX as of Q3 2025.

  • Harbor Capital Advisors reported no remaining MarketAxess Holdings position as of Q3 2025 after selling out during the quarter.
  • Harbor Capital Advisors sold 225 MarketAxess Holdings shares in Q3 2025, an estimated $50K.
  • Harbor Capital Advisors first reported a position in MarketAxess Holdings in Q1 2022 and held it in 6 quarters.
  • Harbor Capital Advisors's MarketAxess Holdings position peaked at $150K in Q2 2022.
  • 452 funds tracked by Wall St. Rank held MarketAxess Holdings as of Q3 2025.

Based on Harbor Capital Advisors's 13F filing for Q3 2025, filed 15 Oct 2025.