Renaissance Technologies's MKTX Position Overview
Renaissance Technologies (via Renaissance Technologies LLC) currently holds 176,000 shares of MarketAxess Holdings Inc. (MKTX) worth $31.9 M, representing 0.05% of the portfolio. First purchased in 2013-Q2, this long-term strategic position has been held for 51 quarters.
Based on 13F filings since 2013, Renaissance Technologies has maintained a long-term strategic position in MKTX, representing a significant commitment to this investment thesis. Largest addition occurred in Q1 2020, adding 245,410 shares. Largest reduction occurred in Q1 2021, reducing 261,900 shares.
Analysis based on 13F filings available since 2013 Q2
Renaissance Technologies's MarketAxess Holdings (MKTX) Holding Value Over Time
Track share changes against reported price movement
Quarterly MarketAxess Holdings (MKTX) Trades by Renaissance Technologies
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q4 2025 | -69,000 | Reduce 28.16% | 176,000 | $181.25 |
| Q3 2025 | +54,400 | Add 28.54% | 245,000 | $174.25 |
| Q2 2025 | +61,100 | Add 47.18% | 190,600 | $223.34 |
| Q1 2025 | -98,380 | Reduce 43.17% | 129,500 | $216.35 |
| Q4 2024 | +40,270 | Add 21.46% | 227,880 | $226.04 |
| Q3 2024 | +22,974 | Add 13.95% | 187,610 | $256.20 |
| Q2 2024 | +159,436 | Add 3066.08% | 164,636 | $200.53 |
| Q1 2024 | +5,200 | New Buy | 5,200 | $219.23 |
| Q4 2023 | -121,110 | Sold Out | 0 | $0.00 |
| Q3 2023 | +60,300 | Add 99.16% | 121,110 | $213.64 |
| Q2 2023 | -3,163 | Reduce 4.94% | 60,810 | $0.26 |
| Q1 2023 | -3,100 | Reduce 4.62% | 63,973 | $0.39 |
| Q4 2022 | -69,510 | Reduce 50.89% | 67,073 | $0.28 |
| Q3 2022 | +77,110 | Add 129.66% | 136,583 | $222.49 |
| Q2 2022 | +33,500 | Add 128.98% | 59,473 | $256.02 |
| Q1 2022 | -65,810 | Reduce 71.70% | 25,973 | $340.20 |
| Q4 2021 | -93,690 | Reduce 50.51% | 91,783 | $411.27 |
| Q3 2021 | -118,670 | Reduce 39.02% | 185,473 | $420.69 |
| Q2 2021 | -148,910 | Reduce 32.87% | 304,143 | $463.59 |
| Q1 2021 | -261,900 | Reduce 36.63% | 453,053 | $497.92 |
| Q4 2020 | -251,711 | Reduce 26.04% | 714,953 | $570.56 |
| Q3 2020 | -68,900 | Reduce 6.65% | 966,664 | $481.59 |
| Q2 2020 | -165,800 | Reduce 13.80% | 1.04 M | $500.92 |
| Q1 2020 | +245,410 | Add 25.67% | 1.2 M | $332.57 |
| Q4 2019 | +237,744 | Add 33.10% | 955,954 | $379.11 |
| Q3 2019 | +224,210 | Add 45.39% | 718,210 | $327.50 |
| Q2 2019 | +2,800 | Add 0.57% | 494,000 | $321.42 |
| Q1 2019 | +118,300 | Add 31.72% | 491,200 | $246.08 |
| Q4 2018 | +50,890 | Add 15.80% | 372,900 | $211.31 |
| Q3 2018 | +12,610 | Add 4.08% | 322,010 | $178.49 |
| Q2 2018 | +7,800 | Add 2.59% | 309,400 | $197.86 |
| Q1 2018 | +19,690 | Add 6.98% | 301,600 | $217.44 |
| Q4 2017 | -90,900 | Reduce 24.38% | 281,910 | $201.75 |
| Q3 2017 | +91,372 | Add 32.47% | 372,810 | $184.51 |
| Q2 2017 | +102,328 | Add 57.13% | 281,438 | $201.10 |
| Q1 2017 | -4,400 | Reduce 2.40% | 179,110 | $187.49 |
| Q4 2016 | +183,510 | New Buy | 183,510 | $146.92 |
| Q3 2016 | -2,500 | Sold Out | 0 | $0.00 |
| Q2 2016 | -104,200 | Reduce 97.66% | 2,500 | $145.20 |
| Q1 2016 | -82,610 | Reduce 43.64% | 106,700 | $124.83 |
| Q4 2015 | -23,100 | Reduce 10.88% | 189,310 | $111.59 |
| Q3 2015 | +15,210 | Add 7.71% | 212,410 | $92.88 |
| Q2 2015 | +24,100 | Add 13.92% | 197,200 | $92.77 |
| Q1 2015 | -6,400 | Reduce 3.57% | 173,100 | $82.90 |
| Q4 2014 | -185,610 | Reduce 50.84% | 179,500 | $71.71 |
| Q3 2014 | -223,300 | Reduce 37.95% | 365,110 | $61.86 |
| Q2 2014 | +87,900 | Add 17.56% | 588,410 | $54.06 |
| Q1 2014 | +81,810 | Add 19.54% | 500,510 | $59.22 |
| Q4 2013 | +4,600 | Add 1.11% | 418,700 | $66.93 |
| Q3 2013 | -85,510 | Reduce 17.12% | 414,100 | $59.95 |
| Q2 2013 | +499,610 | Add 0.00% | 499,610 | $46.75 |
Renaissance Technologies's MarketAxess Holdings Investment FAQs
Renaissance Technologies first purchased MarketAxess Holdings Inc. (MKTX) in Q2 2013, acquiring 499,610 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Renaissance Technologies has held MarketAxess Holdings Inc. (MKTX) for 51 quarters since Q2 2013.
Renaissance Technologies's largest addition to MarketAxess Holdings Inc. (MKTX) was in Q2 2013, adding 499,610 shares worth $23.36 M.
According to the latest 13F filing for Q4 2025, Renaissance Technologies's firm, Renaissance Technologies LLC, owns 176,000 shares of MarketAxess Holdings Inc. (MKTX), valued at approximately $31.9 M.
As of the Q4 2025 filing, MarketAxess Holdings Inc. (MKTX) represents approximately 0.05% of Renaissance Technologies's publicly disclosed stock portfolio, making it one of their key holdings.
Renaissance Technologies's peak holding in MarketAxess Holdings Inc. (MKTX) was 1,201,364 shares, as reported at the end of Q1 2020.