MarketAxess Holdings Inc.
US ˙ NasdaqGS ˙ US57060D1081

SecurityMKTX / MarketAxess Holdings Inc.
InstitutionJefferies Group LLC
Latest Disclosed Ownership1,958 shares
Latest Disclosed Value $ 435,635
Jefferies Group LLC ownership in MKTX / MarketAxess Holdings Inc.

On September 21, 2023 - Jefferies Group LLC filed a 13F-HR/A form disclosing ownership of 1,958 shares of MarketAxess Holdings Inc. (US:MKTX) valued at $435,635 USD as of September 30, 2022. The entity filed a previous 13F-HR/A on September 21, 2023 disclosing 0 shares of MarketAxess Holdings Inc.. The current value of the position is $228,949 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)
2023-09-21 2022-09-30 13F/A-1 MARKETAXESS HLDGS COM 57060D108 1,958 1,958 436 0.0036
2022-11-14 2022-09-30 13F MARKETAXESS HLDGS COM 57060D108 4,098 4,098 410 0.0033
2023-09-21 2021-12-31 13F/A-1 MARKETAXESS HLDGS COM 57060D108 0 -648 -100.00 0 -100.00
2022-02-12 2021-12-31 13F MARKETAXESS HLDGS COM 57060D108 0 -648 0
2023-09-21 2021-09-30 13F/A-2 MARKETAXESS HLDGS COM 57060D108 648 -1,369 -67.87 273 -70.91 0.0020
2021-12-17 2021-09-30 13F/A-1 MARKETAXESS HLDGS COM 57060D108 648 -1,369 273 0.0019
2021-11-15 2021-09-30 13F MARKETAXESS HLDGS COM 57060D108 648 -1,369 273 0.0018
2023-09-21 2021-06-30 13F/A-2 MARKETAXESS HLDGS COM 57060D108 2,017 2,017 935 0.0059
2021-08-20 2021-06-30 13F/A-1 MARKETAXESS HLDGS COM 57060D108 2,017 2,017 935 0.0055
2021-08-16 2021-06-30 13F MARKETAXESS HLDGS COM 57060D108 2,017 2,017 935 0.0055
2023-09-21 2021-03-31 13F/A-1 MARKETAXESS HLDGS COM 57060D108 0 -385 -100.00 0 -100.00
2021-05-14 2021-03-31 13F MARKETAXESS HLDGS COM 57060D108 0 -385 0
2023-09-21 2020-12-31 13F/A-1 MARKETAXESS HLDGS COM 57060D108 385 385 220 0.0017
2021-02-16 2020-12-31 13F MARKETAXESS HLDGS COM 57060D108 385 385 220 0.0020
2020-11-02 2020-06-30 13F/A-1 MARKETAXESS HLDGS COM 57060D108 0 -817 -100.00 0 -100.00
2020-05-15 2020-03-31 13F MARKETAXESS HLDGS COM 57060D108 817 -629 -43.50 272 -50.36 0.0034
2020-02-13 2019-12-31 13F MARKETAXESS HLDGS COM 57060D108 1,446 -12,395 -89.55 548 -87.91 0.0042
2019-11-13 2019-09-30 13F MARKETAXESS HLDGS COM 57060D108 13,841 -2,339 -14.46 4,533 -12.84 0.0351
2019-08-14 2019-06-30 13F MARKETAXESS HLDGS COM 57060D108 16,180 -1,320 -7.54 5,201 20.78 0.0379
2019-05-15 2019-03-31 13F MARKETAXESS HLDGS COM 57060D108 17,500 15,724 885.36 4,306 1,048.27 0.0354
2019-02-14 2018-12-31 13F MARKETAXESS HLDGS COM 57060D108 1,776 -2,073 -53.86 375 -45.41 0.0031
2018-11-14 2018-09-30 13F MARKETAXESS HLDGS COM 57060D108 3,849 3,849 116.72 687 83.20 0.0045
2018-05-15 2018-03-31 13F MARKETAXESS HLDGS COM 57060D108 0 -12,713 -100.00 0 -100.00
2018-02-14 2017-12-31 13F MARKETAXESS HLDGS COM 57060D108 12,713 6,658 109.96 2,565 129.63 0.0120
2017-11-14 2017-09-30 13F MARKETAXESS HLDGS COM 57060D108 6,055 -659 -9.82 1,117 -17.26 0.0074
2017-08-14 2017-06-30 13F MARKETAXESS HLDGS COM 57060D108 6,714 6,714 10.88 1,350 20.86 0.0090
2017-05-15 2017-03-31 13F MARKETAXESS HLDGS COM 57060D108 0 -10,335 -100.00 0 -100.00
2017-02-14 2016-12-31 13F/A-1 MARKETAXESS HLDGS COM 57060D108 10,335 3,294 46.78 1,518 30.19 0.0085
2017-02-14 2016-12-31 13F MARKETAXESS HLDGS COM 57060D108 10,335 1,518
2016-11-14 2016-09-30 13F MARKETAXESS HLDGS COM 57060D108 7,041 7,041 -31.87 1,166 -23.19 0.0060
2015-02-17 2014-12-31 13F MEASUREMENT SPECIALTIES COM 583421102 0 -6,108 -100.00 0 -100.00
2014-11-17 2014-09-30 13F MEASUREMENT SPECIALTIES COM 583421102 6,108 -2,973 -32.74 523 -33.12 0.0036
2014-08-14 2014-06-30 13F MEASUREMENT SPECIALTIES COM 583421102 9,081 9,081 782 0.0066
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.