Renaissance Technologies’s MarketAxess Holdings MKTX Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q1
$27.6M Sell
167,100
-8,900
-5% -$1.56M 0.04% 530
2025
Q4
$31.9M Sell
176,000
-69,000
-28% -$11.8M 0.05% 424
2025
Q3
$42.7M Buy
245,000
+54,400
+29% +$10.6M 0.06% 407
2025
Q2
$42.6M Buy
190,600
+61,100
+47% +$13.4M 0.06% 397
2025
Q1
$28M Sell
129,500
-98,380
-43% -$20.7M 0.04% 525
2024
Q4
$51.5M Buy
227,880
+40,270
+21% +$10.6M 0.08% 312
2024
Q3
$48.1M Buy
187,610
+22,974
+14% +$5.38M 0.07% 333
2024
Q2
$33M Buy
164,636
+159,436
+3,066% +$32.9M 0.06% 415
2024
Q1
$1.14M Buy
+5,200
New +$1.23M ﹤0.01% 2403
2023
Q4
Sell
-121,110
Closed -$25.9M 3975
2023
Q3
$25.9M Buy
121,110
+60,300
+99% +$14.6M 0.04% 464
2023
Q2
$15.9M Sell
60,810
-3,163
-5% -$944K 0.02% 786
2023
Q1
$25M Sell
63,973
-3,100
-5% -$1.1M 0.03% 612
2022
Q4
$18.7M Sell
67,073
-69,510
-51% -$17.9M 0.03% 737
2022
Q3
$30.4M Buy
136,583
+77,110
+130% +$19.8M 0.04% 483
2022
Q2
$15.2M Buy
59,473
+33,500
+129% +$9.16M 0.02% 876
2022
Q1
$8.84M Sell
25,973
-65,810
-72% -$23.9M 0.01% 1202
2021
Q4
$37.7M Sell
91,783
-93,690
-51% -$37M 0.05% 418
2021
Q3
$78M Sell
185,473
-118,670
-39% -$54.5M 0.1% 211
2021
Q2
$141M Sell
304,143
-148,910
-33% -$70.9M 0.18% 100
2021
Q1
$226M Sell
453,053
-261,900
-37% -$140M 0.28% 60
2020
Q4
$408M Sell
714,953
-251,711
-26% -$137M 0.44% 41
2020
Q3
$466M Sell
966,664
-68,900
-7% -$34.1M 0.46% 42
2020
Q2
$519M Sell
1,035,564
-165,800
-14% -$77.2M 0.45% 40
2020
Q1
$400M Buy
1,201,364
+245,410
+26% +$85.5M 0.39% 43
2019
Q4
$362M Buy
955,954
+237,744
+33% +$87.2M 0.28% 65
2019
Q3
$235M Buy
718,210
+224,210
+45% +$80.3M 0.2% 103
2019
Q2
$159M Buy
494,000
+2,800
+0.6% +$809K 0.14% 155
2019
Q1
$121M Buy
491,200
+118,300
+32% +$26.8M 0.11% 209
2018
Q4
$78.8M Buy
372,900
+50,890
+16% +$10.5M 0.09% 269
2018
Q3
$57.5M Buy
322,010
+12,610
+4% +$2.42M 0.06% 387
2018
Q2
$61.2M Buy
309,400
+7,800
+3% +$1.62M 0.07% 360
2018
Q1
$65.6M Buy
301,600
+19,690
+7% +$4.05M 0.07% 337
2017
Q4
$56.9M Sell
281,910
-90,900
-24% -$17.2M 0.06% 384
2017
Q3
$68.8M Buy
372,810
+91,372
+32% +$17.5M 0.08% 299
2017
Q2
$56.6M Buy
281,438
+102,328
+57% +$19.6M 0.07% 335
2017
Q1
$33.6M Sell
179,110
-4,400
-2% -$798K 0.05% 516
2016
Q4
$27M Buy
+183,510
New +$29.2M 0.04% 605
2016
Q3
Sell
-2,500
Closed -$363K 3436
2016
Q2
$363K Sell
2,500
-104,200
-98% -$13.9M ﹤0.01% 2891
2016
Q1
$13.3M Sell
106,700
-82,610
-44% -$9.43M 0.03% 935
2015
Q4
$21.1M Sell
189,310
-23,100
-11% -$2.36M 0.05% 519
2015
Q3
$19.7M Buy
212,410
+15,210
+8% +$1.47M 0.05% 506
2015
Q2
$18.3M Buy
197,200
+24,100
+14% +$2.13M 0.04% 584
2015
Q1
$14.3M Sell
173,100
-6,400
-4% -$507K 0.03% 749
2014
Q4
$12.9M Sell
179,500
-185,610
-51% -$12.2M 0.03% 735
2014
Q3
$22.6M Sell
365,110
-223,300
-38% -$12.6M 0.06% 401
2014
Q2
$31.8M Buy
588,410
+87,900
+18% +$4.8M 0.07% 302
2014
Q1
$29.6M Buy
500,510
+81,810
+20% +$5.06M 0.07% 322
2013
Q4
$28M Buy
418,700
+4,600
+1% +$303K 0.07% 352
2013
Q3
$24.8M Sell
414,100
-85,510
-17% -$4.57M 0.06% 391
2013
Q2
$23.4M Buy
+499,610
New +$21.5M 0.06% 391

Other funds holding MKTX

Renaissance Technologies's MKTX Position: Q1 2026 in Review

Renaissance Technologies reduced its MarketAxess Holdings (MKTX) stake by 5.1% in Q1 2026, selling an estimated $1.56M and leaving 167,100 shares worth $27.6M. The position accounts for 0.04% of the portfolio, ranked #530.

Renaissance Technologies first reported a position in MKTX in Q2 2013 and has held it in 50 quarters since. The position peaked at $519M in Q2 2020. 447 funds tracked by Wall St. Rank hold MKTX as of Q1 2026.

  • Renaissance Technologies held 167,100 shares of MarketAxess Holdings worth $27.6M as of Q1 2026.
  • Renaissance Technologies sold 8,900 MarketAxess Holdings shares in Q1 2026, an estimated $1.56M.
  • MarketAxess Holdings made up 0.04% of Renaissance Technologies's portfolio in Q1 2026, its #530 holding.
  • Renaissance Technologies first reported a position in MarketAxess Holdings in Q2 2013 and has held it in 50 quarters since.
  • Renaissance Technologies's MarketAxess Holdings position peaked at $519M in Q2 2020.
  • 447 funds tracked by Wall St. Rank held MarketAxess Holdings as of Q1 2026.

Based on Renaissance Technologies's 13F filing for Q1 2026, filed 14 May 2026.