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Custom Index Systems’s MarketAxess Holdings MKTX Stock Holding History

Custom Index Systems’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
Q2 		– Sell
-1,831
Closed -$396K – 276
2025
Q1 		$396K Buy
1,831
+117
+7% +$24.6K 0.2% 161
2024
Q4 		$387K Sell
1,714
-304
-15% -$80K 0.21% 150
2024
Q3 		$517K Sell
2,018
-212
-10% -$49.7K 0.28% 107
2024
Q2 		$447K Buy
+2,230
New +$460K 0.26% 106

Other funds holding MKTX

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
VanEck Associates
VanEck Associates New York $133B AUM 72.99% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
GAM
GuardCap Asset Management London, United Kingdom $1.75B AUM 7.74% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

Custom Index Systems's MKTX Position: Q2 2025 in Review

Custom Index Systems sold out of MarketAxess Holdings (MKTX) in Q2 2025, closing a stake of 1,831 shares — an estimated $396K sold.

Custom Index Systems first reported a position in MKTX in Q2 2024 and held it in 4 quarters. The position peaked at $517K in Q3 2024. 530 funds tracked by Wall St. Rank hold MKTX as of Q2 2025.

  • Custom Index Systems reported no remaining MarketAxess Holdings position as of Q2 2025 after selling out during the quarter.
  • Custom Index Systems sold 1,831 MarketAxess Holdings shares in Q2 2025, an estimated $396K.
  • Custom Index Systems first reported a position in MarketAxess Holdings in Q2 2024 and held it in 4 quarters.
  • Custom Index Systems's MarketAxess Holdings position peaked at $517K in Q3 2024.
  • 530 funds tracked by Wall St. Rank held MarketAxess Holdings as of Q2 2025.

Based on Custom Index Systems's 13F filing for Q2 2025, filed 13 Aug 2025.