Twin Tree Management
MKTX icon

Twin Tree Management’s MarketAxess Holdings MKTX Stock Holding History

Twin Tree 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
Q3 		– Sell
-3
Closed -$340 – 1610
2026
Q2 		$340 Sell
3
-2,946
-100% -$420K ﹤0.01% 1354
2026
Q1 		$487K Buy
2,949
+1,722
+140% +$302K 0.01% 936
2025
Q4 		$222K Buy
+1,227
New +$209K ﹤0.01% 1238
2025
Q3 		– Sell
-2,599
Closed -$508K – 1701
2025
Q2 		$580K Sell
2,599
-5,332
-67% -$1.17M ﹤0.01% 1427
2025
Q1 		$1.72M Buy
+7,931
New +$1.67M ﹤0.01% 1173
2024
Q4 		– Sell
-419
Closed -$107K – 1787
2024
Q3 		$107K Buy
+419
New +$98.2K ﹤0.01% 1373
2024
Q1 		– Sell
-968
Closed -$283K – 1482
2023
Q4 		$283K Buy
+968
New +$234K ﹤0.01% 1238
2023
Q3 		– Sell
-2,511
Closed -$656K – 1413
2023
Q2 		$656K Buy
2,511
+930
+59% +$277K ﹤0.01% 1038
2023
Q1 		$619K Buy
+1,581
New +$560K ﹤0.01% 1063
2020
Q4 		– Sell
-130
Closed -$63K – 1410
2020
Q3 		$63K Sell
130
-252
-66% -$125K ﹤0.01% 1088
2020
Q2 		$191K Sell
382
-6,023
-94% -$2.81M ﹤0.01% 1245
2020
Q1 		$2.13M Buy
6,405
+4,016
+168% +$1.4M 0.01% 698
2019
Q4 		$906K Buy
+2,389
New +$876K ﹤0.01% 878
2017
Q1 		– Sell
-2,392
Closed -$351K – 1155
2016
Q4 		$351K Buy
2,392
+2,221
+1,299% +$353K ﹤0.01% 933
2016
Q3 		$28K Buy
+171
New +$27.8K ﹤0.01% 1056

Other funds holding MKTX

Primecap Management
Primecap Management Pasadena, California $161B AUM 86.05% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.21T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.76T AUM
State Street
State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return
Bank of Montreal
Bank of Montreal Toronto, Ontario, Canada $313B AUM 26.62% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
Bank of Nova Scotia
Bank of Nova Scotia Toronto, Ontario, Canada $61B AUM 31.38% 1-Year Est. Return
GuardCap Asset Management
GuardCap Asset Management London, United Kingdom $1.47B AUM 10.92% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $551B AUM 33.95% 1-Year Est. Return
Magnetar Financial
Magnetar Financial Evanston, Illinois $10.2B AUM 0.67% 1-Year Est. Return

Twin Tree Management's MKTX Position: Q3 2026 in Review

Twin Tree Management sold out of MarketAxess Holdings (MKTX) in Q3 2026, closing a stake of 3 shares — an estimated $340 sold.

Twin Tree Management first reported a position in MKTX in Q3 2016 and held it in 15 quarters. The position peaked at $2.13M in Q1 2020. 299 funds tracked by Wall St. Rank hold MKTX as of Q3 2026.

  • Twin Tree Management reported no remaining MarketAxess Holdings position as of Q3 2026 after selling out during the quarter.
  • Twin Tree Management sold 3 MarketAxess Holdings shares in Q3 2026, an estimated $340.
  • Twin Tree Management first reported a position in MarketAxess Holdings in Q3 2016 and held it in 15 quarters.
  • Twin Tree Management's MarketAxess Holdings position peaked at $2.13M in Q1 2020.
  • 299 funds tracked by Wall St. Rank held MarketAxess Holdings as of Q3 2026.

Based on Twin Tree Management's 13F filing for Q3 2026, filed 10 Nov 2026.