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Aster Capital Management’s MarketAxess Holdings MKTX Stock Holding History

Aster Capital Management’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 		$22.5K Sell
104
-1,163
-92% -$204K 0.01% 542
2025
Q4 		$230K Buy
1,267
+291
+30% +$49.7K 0.1% 197
2025
Q3 		$170K Buy
+976
New +$191K 0.09% 286
2025
Q2 		– Sell
-227
Closed -$43.8K – 1369
2025
Q1 		$43.8K Buy
227
+170
+298% +$35.7K 0.01% 852
2024
Q4 		$12.9K Sell
57
-19
-25% -$5K ﹤0.01% 713
2024
Q3 		$19.5K Buy
+76
New +$17.8K ﹤0.01% 682

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

Aster Capital Management's MKTX Position: Q1 2026 in Review

Aster Capital Management reduced its MarketAxess Holdings (MKTX) stake by 92% in Q1 2026, selling an estimated $204K and leaving 104 shares worth $22.5K. The position accounts for 0.01% of the portfolio, ranked #542.

Aster Capital Management first reported a position in MKTX in Q3 2024 and has held it in 6 quarters since. The position peaked at $230K in Q4 2025. 448 funds tracked by Wall St. Rank hold MKTX as of Q1 2026.

  • Aster Capital Management held 104 shares of MarketAxess Holdings worth $22.5K as of Q1 2026.
  • Aster Capital Management sold 1,163 MarketAxess Holdings shares in Q1 2026, an estimated $204K.
  • MarketAxess Holdings made up 0.01% of Aster Capital Management's portfolio in Q1 2026, its #542 holding.
  • Aster Capital Management first reported a position in MarketAxess Holdings in Q3 2024 and has held it in 6 quarters since.
  • Aster Capital Management's MarketAxess Holdings position peaked at $230K in Q4 2025.
  • 448 funds tracked by Wall St. Rank held MarketAxess Holdings as of Q1 2026.

Based on Aster Capital Management's 13F filing for Q1 2026, filed 13 May 2026.