마켓액세스 홀딩스(MarketAxess Holdings Inc.)
MX ˙ BMV ˙ US57060D1081
SecurityMX:MKTX / MarketAxess Holdings Inc.
InstitutionGuardcap Asset Management Ltd
Latest Disclosed Ownership643,370 shares
Latest Disclosed Value $ 106,351,076
Guardcap Asset Management Ltd reports 44.23% decrease in ownership of MKTX / MarketAxess Holdings Inc.

On April 28, 2026 - Guardcap Asset Management Ltd filed a 13F-HR form disclosing ownership of 643,370 shares of MarketAxess Holdings Inc. (MX:MKTX) valued at $106,351,076 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 1,153,578 shares of MarketAxess Holdings Inc.. This represents a change in shares of -44.23% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-28 2026-03-31 13F MARKETAXESS HLDGS COM 57060D108 643,370 -510,208 -44.23 106,351 -49.11 6.0898
2026-02-10 2025-12-31 13F MARKETAXESS HLDGS COM 57060D108 1,153,578 -207,686 -15.26 208,976 -11.90 5.5839
2025-11-06 2025-09-30 13F MARKETAXESS HLDGS COM 57060D108 1,361,264 -137,094 -9.15 237,200 -29.12 5.4976
2025-08-07 2025-06-30 13F MARKETAXESS HLDGS COM 57060D108 1,498,358 -24,648 -1.62 334,643 1.56 6.5656
2025-05-14 2025-03-31 13F MARKETAXESS HLDGS COM 57060D108 1,523,006 -240,202 -13.62 329,502 -17.33 6.3839
2025-02-11 2024-12-31 13F MARKETAXESS HLDGS COM 57060D108 1,763,208 -238,615 -11.92 398,556 -22.29 6.4406
2024-11-12 2024-09-30 13F MARKETAXESS HLDGS COM 57060D108 2,001,823 -144,958 -6.75 512,867 19.13 6.9807
2024-08-13 2024-06-30 13F MARKETAXESS HLDGS COM 57060D108 2,146,781 -279,116 -11.51 430,494 -19.06 6.1534
2024-05-14 2024-03-31 13F MARKETAXESS HLDGS COM 57060D108 2,425,897 564,820 30.35 531,878 -2.41 6.5195
2024-02-08 2023-12-31 13F MARKETAXESS HLDGS COM 57060D108 1,861,077 -34,122 -1.80 545,016 34.61 7.0222
2023-11-14 2023-09-30 13F MARKETAXESS HLDGS COM 57060D108 1,895,199 -91,592 -4.61 404,890 -22.04 5.6243
2023-08-14 2023-06-30 13F MARKETAXESS HLDGS COM 57060D108 1,986,791 86,397 4.55 519,387 -30.15 6.9846
2023-05-15 2023-03-31 13F MARKETAXESS HLDGS COM 57060D108 1,900,394 -2,661 -0.14 743,605 40.11 10.3942
2023-02-14 2022-12-31 13F MARKETAXESS HLDGS COM 57060D108 1,903,055 -51,748 -2.65 530,743 22.03 8.2471
2022-11-14 2022-09-30 13F MARKETAXESS HLDGS COM 57060D108 1,954,803 -6,758 -0.34 434,924 -13.39 7.2957
2022-08-12 2022-06-30 13F MARKETAXESS HLDGS COM 57060D108 1,961,561 499,907 34.20 502,179 0.99 7.7065
2022-05-16 2022-03-31 13F MARKETAXESS HLDGS COM 57060D108 1,461,654 248,340 20.47 497,255 -0.35 6.5131
2022-02-10 2021-12-31 13F MARKETAXESS HLDGS COM 57060D108 1,213,314 29,913 2.53 499,000 0.23 6.2004
2021-11-15 2021-09-30 13F MARKETAXESS HLDGS COM 57060D108 1,183,401 666,218 128.82 497,845 107.64 6.8558
2021-08-17 2021-06-30 13F MARKETAXESS HLDGS COM 57060D108 517,183 85,669 19.85 239,761 11.59 3.4611
2021-05-17 2021-03-31 13F MARKETAXESS HLDGS COM 57060D108 431,514 111,987 35.05 214,859 17.85 3.8832
2021-02-12 2020-12-31 13F MARKETAXESS HLDGS COM 57060D108 319,527 83,680 35.48 182,309 60.51 3.7193
2020-11-16 2020-09-30 13F MARKETAXESS HLDGS COM 57060D108 235,847 26,358 12.58 113,582 8.24 3.6848
2020-08-13 2020-06-30 13F MARKETAXESS HLDGS COM 57060D108 209,489 -26,293 -11.15 104,937 33.82 4.0302
2020-05-15 2020-03-31 13F MARKETAXESS HLDGS COM 57060D108 235,782 50,516 27.27 78,414 11.64 4.5321
2020-02-13 2019-12-31 13F MARKETAXESS HLDGS COM 57060D108 185,266 -37,494 -16.83 70,236 -3.73 4.1354
2019-11-14 2019-09-30 13F MARKETAXESS HLDGS COM 57060D108 222,760 32,635 17.17 72,954 19.38 5.3678
2019-08-14 2019-06-30 13F MARKETAXESS HLDGS COM 57060D108 190,125 3,377 1.81 61,110 32.98 5.2498
2019-05-15 2019-03-31 13F MARKETAXESS HLDGS COM 57060D108 186,748 57,830 44.86 45,955 68.69 5.4808
2019-02-13 2018-12-31 13F MARKETAXESS HLDGS COM 57060D108 128,918 128,918 27,242 5.3155
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.