MarketAxess Holdings Inc.
US ˙ NasdaqGS ˙ US57060D1081

SecurityMKTX / MarketAxess Holdings Inc.
InstitutionEngineers Gate Manager LP
Latest Disclosed Ownership4,865 shares
Latest Disclosed Value $ 802,628
Engineers Gate Manager LP ownership in MKTX / MarketAxess Holdings Inc.

On May 15, 2026 - Engineers Gate Manager LP filed a 13F-HR form disclosing ownership of 4,865 shares of MarketAxess Holdings Inc. (US:MKTX) valued at $802,628 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 0 shares of MarketAxess Holdings Inc.. The current value of the position is $598,298 USD.

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)
2026-05-15 2026-03-31 13F MARKETAXESS HLDGS COM 57060D108 4,865 4,865 803 0.0100
2026-02-17 2025-12-31 13F MARKETAXESS HLDGS COM 57060D108 0 -42,002 -100.00 0 -100.00
2025-11-14 2025-09-30 13F MARKETAXESS HLDGS COM 57060D108 42,002 -3,186 -7.05 7,319 -27.49 0.0838
2025-08-14 2025-06-30 13F MARKETAXESS HLDGS COM 57060D108 45,188 24,437 117.76 10,092 124.82 0.1256
2025-05-15 2025-03-31 13F MARKETAXESS HLDGS COM 57060D108 20,751 11,148 116.09 4,489 106.87 0.0757
2025-02-14 2024-12-31 13F MARKETAXESS HLDGS COM 57060D108 9,603 -4,769 -33.18 2,171 -41.06 0.0378
2024-11-14 2024-09-30 13F MARKETAXESS HLDGS COM 57060D108 14,372 11,472 395.59 3,682 533.73 0.0719
2024-08-14 2024-06-30 13F MARKETAXESS HLDGS COM 57060D108 2,900 -6,240 -68.27 582 -70.99 0.0131
2024-05-15 2024-03-31 13F MARKETAXESS HLDGS COM 57060D108 9,140 6,176 208.37 2,004 130.76 0.0528
2024-02-14 2023-12-31 13F MARKETAXESS HLDGS COM 57060D108 2,964 -35,062 -92.21 868 -89.31 0.0248
2023-11-14 2023-09-30 13F MARKETAXESS HLDGS COM 57060D108 38,026 16,661 77.98 8,124 45.44 0.3003
2023-08-14 2023-06-30 13F MARKETAXESS HLDGS COM 57060D108 21,365 19,692 1,177.05 5,585 753.98 0.2111
2023-05-15 2023-03-31 13F MARKETAXESS HLDGS COM 57060D108 1,673 1,673 655 0.0274
2023-02-14 2022-12-31 13F MARKETAXESS HLDGS COM 57060D108 0 -6,244 -100.00 0 -100.00
2022-11-14 2022-09-30 13F MARKETAXESS HLDGS COM 57060D108 6,244 -9,401 -60.09 1,389 -65.32 0.0864
2022-08-15 2022-06-30 13F MARKETAXESS HLDGS COM 57060D108 15,645 -1,036 -6.21 4,005 -29.43 0.1468
2022-05-16 2022-03-31 13F MARKETAXESS HLDGS COM 57060D108 16,681 16,681 5,675 0.2221
2022-02-14 2021-12-31 13F MARKETAXESS HLDGS COM 57060D108 0 -8,725 -100.00 0 -100.00
2021-11-15 2021-09-30 13F MARKETAXESS HLDGS COM 57060D108 8,725 -1,706 -16.36 3,671 -24.09 0.2092
2021-08-16 2021-06-30 13F MARKETAXESS HLDGS COM 57060D108 10,431 9,231 769.25 4,836 708.70 0.3110
2021-05-17 2021-03-31 13F MARKETAXESS HLDGS COM 57060D108 1,200 -3,154 -72.44 598 -75.93 0.0296
2021-02-16 2020-12-31 13F MARKETAXESS HLDGS COM 57060D108 4,354 2,748 171.11 2,484 221.35 0.1077
2020-11-16 2020-09-30 13F MARKETAXESS HLDGS COM 57060D108 1,606 -3,889 -70.77 773 -71.92 0.0363
2020-08-17 2020-06-30 13F MARKETAXESS HLDGS COM 57060D108 5,495 3,584 187.55 2,753 332.86 0.1401
2020-05-15 2020-03-31 13F MARKETAXESS HLDGS COM 57060D108 1,911 686 56.00 636 37.07 0.0458
2020-02-14 2019-12-31 13F MARKETAXESS HLDGS COM 57060D108 1,225 -5,995 -83.03 464 -80.38 0.0204
2019-11-14 2019-09-30 13F MARKETAXESS HLDGS COM 57060D108 7,220 6,537 957.10 2,365 975.00 0.1201
2019-08-14 2019-06-30 13F MARKETAXESS HLDGS COM 57060D108 683 683 220 0.0121
2017-05-05 2017-03-31 13F MARKETAXESS HLDGS COM 57060D108 0 -4,800 -100.00 0 -100.00
2017-02-10 2016-12-31 13F MARKETAXESS HLDGS COM 57060D108 4,800 4,800 705 0.0756
2015-11-16 2015-09-30 13F MARKETAXESS HLDGS COM 57060D108 0 -9,696 -100.00 0 -100.00
2015-08-14 2015-06-30 13F MARKETAXESS HLDGS COM 57060D108 9,696 -873 -8.26 899 2.63 0.0880
2015-05-15 2015-03-31 13F MARKETAXESS HLDGS COM 57060D108 10,569 10,569 876 0.1165
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.