Cliff Asness's MKTX Position Overview
Cliff Asness (via Aqr Capital Management LLC) currently holds 951.1K shares of MarketAxess Holdings Inc. (MKTX) worth $165.73 M, representing 0.11% of the portfolio. First purchased in 2012-Q4, this long-term strategic position has been held for 52 quarters.
Based on 13F filings since 2013, Cliff Asness has maintained a long-term strategic position in MKTX, representing a significant commitment to this investment thesis. Largest addition occurred in Q2 2025, adding 629.0K shares. Largest reduction occurred in Q3 2017, reducing 168.4K shares.
Analysis based on 13F filings available since 2013 Q2
Cliff Asness's MarketAxess Holdings (MKTX) Holding Value Over Time
Track share changes against reported price movement
Quarterly MarketAxess Holdings (MKTX) Trades by Cliff Asness
| Period | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q4 2012 | +14,249 | Add 0.00% | 14,248 | $35.30 |
| Q2 2013 | +10,149 | Add 0.00% | 10,148 | $46.71 |
| Q3 2013 | +10,900 | Add 107.41% | 21,048 | $60.05 |
| Q4 2013 | +12,304 | Add 58.46% | 33,352 | $66.86 |
| Q1 2014 | -2,100 | Reduce 6.30% | 31,252 | $59.23 |
| Q2 2014 | +36,400 | Add 116.47% | 67,652 | $54.06 |
| Q3 2014 | -39,000 | Reduce 57.65% | 28,652 | $61.85 |
| Q4 2014 | -22,100 | Reduce 77.13% | 6,552 | $71.73 |
| Q1 2015 | +3,300 | Add 50.37% | 9,852 | $82.93 |
| Q2 2015 | +3,868 | Add 39.26% | 13,720 | $92.78 |
| Q3 2015 | -3,535 | Reduce 25.77% | 10,185 | $92.88 |
| Q4 2015 | +15,012 | Add 147.39% | 25,197 | $111.60 |
| Q1 2016 | +33,482 | Add 132.88% | 58,679 | $124.83 |
| Q2 2016 | +24,190 | Add 41.22% | 82,869 | $145.40 |
| Q3 2016 | +42,876 | Add 51.74% | 125,745 | $165.59 |
| Q4 2016 | +163,585 | Add 130.09% | 289,330 | $146.92 |
| Q1 2017 | +50,467 | Add 17.44% | 339,797 | $187.49 |
| Q2 2017 | -51,281 | Reduce 15.09% | 288,516 | $201.10 |
| Q3 2017 | -168,359 | Reduce 58.35% | 120,157 | $184.51 |
| Q4 2017 | -67,889 | Reduce 56.50% | 52,268 | $201.75 |
| Q1 2018 | -481 | Reduce 0.92% | 51,787 | $217.45 |
| Q2 2018 | -7,871 | Reduce 15.20% | 43,916 | $197.85 |
| Q3 2018 | -3,175 | Reduce 7.23% | 40,741 | $178.49 |
| Q4 2018 | +23,347 | Add 57.31% | 64,088 | $211.30 |
| Q1 2019 | -1,992 | Reduce 3.11% | 62,096 | $246.09 |
| Q2 2019 | +3,676 | Add 5.92% | 65,772 | $321.41 |
| Q3 2019 | -47,568 | Reduce 72.32% | 18,204 | $324.82 |
| Q4 2019 | +10,324 | Add 56.71% | 28,528 | $379.10 |
| Q1 2020 | -1,420 | Reduce 4.98% | 27,108 | $332.56 |
| Q2 2020 | +116 | Add 0.43% | 27,224 | $500.00 |
| Q3 2020 | +3,684 | Add 13.53% | 30,908 | $481.59 |
| Q4 2020 | +2,270 | Add 7.34% | 33,178 | $563.42 |
| Q1 2021 | -983 | Reduce 2.96% | 32,195 | $497.93 |
| Q2 2021 | -14,435 | Reduce 44.84% | 17,760 | $463.57 |
| Q3 2021 | -3,359 | Reduce 18.91% | 14,401 | $420.67 |
| Q4 2021 | -8,012 | Reduce 55.64% | 6,389 | $411.33 |
| Q1 2022 | +488 | Add 7.64% | 6,877 | $340.26 |
| Q2 2022 | +260 | Add 3.78% | 7,137 | $255.99 |
| Q3 2022 | +29,615 | Add 414.95% | 36,752 | $222.49 |
| Q4 2022 | -14,734 | Reduce 40.09% | 22,018 | $278.89 |
| Q1 2023 | -11,182 | Reduce 50.79% | 10,836 | $387.47 |
| Q2 2023 | +2,557 | Add 23.60% | 13,393 | $261.42 |
| Q3 2023 | +28,600 | Add 213.54% | 41,993 | $210.42 |
| Q4 2023 | -1,560 | Reduce 3.71% | 40,433 | $292.85 |
| Q1 2024 | -19,914 | Reduce 49.25% | 20,519 | $219.25 |
| Q2 2024 | -1,255 | Reduce 6.12% | 19,264 | $200.53 |
| Q3 2024 | -4,237 | Reduce 21.99% | 15,027 | $256.20 |
| Q4 2024 | +79,178 | Add 526.90% | 94,205 | $226.04 |
| Q1 2025 | +35,303 | Add 37.47% | 129,508 | $216.35 |
| Q2 2025 | +628,954 | Add 485.65% | 758,462 | $220.44 |
| Q3 2025 | +192,626 | Add 25.40% | 951,088 | $174.25 |
Cliff Asness's MarketAxess Holdings Investment FAQs
Cliff Asness first purchased MarketAxess Holdings Inc. (MKTX) in Q4 2012, acquiring 14,248 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Cliff Asness has held MarketAxess Holdings Inc. (MKTX) for 52 quarters since Q4 2012. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Cliff Asness's largest addition to MarketAxess Holdings Inc. (MKTX) was in Q2 2025, adding 758,462 shares worth $167.2 M. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
According to the latest 13F filing for Q3 2025, Cliff Asness's firm, Aqr Capital Management LLC, owns 951,088 shares of MarketAxess Holdings Inc. (MKTX), valued at approximately $165.73 M. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
As of the Q3 2025 filing, MarketAxess Holdings Inc. (MKTX) represents approximately 0.11% of Cliff Asness's publicly disclosed stock portfolio, making it one of their key holdings. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Cliff Asness's peak holding in MarketAxess Holdings Inc. (MKTX) was 951,088 shares, as reported at the end of Q3 2025. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.