MarketAxess Holdings Inc.
US ˙ NasdaqGS ˙ US57060D1081

SecurityMKTX / MarketAxess Holdings Inc.
InsiderStephen P Casper
This page shows the track record and history of Casper Stephen P insider trades in MarketAxess Holdings Inc.. The SEC defines Insiders as officers, directors, or significant investors (greater than 10% ownership) in a company. It is illegal for insiders to make trades in their companies based on material, non-public information ("MNPI"). This does not mean it is illegal for them to make any trades in their own companies. However, they must report all trades to the SEC via a Form 4.
Insider Purchases - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made by Stephen P Casper in MKTX / MarketAxess Holdings Inc.. This analysis helps to understand if the insider consistently generates abnormal returns, and is worth following. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market purchases that were not part of an automatic trading plan.

Trade Date Reported
Shares		 Reported
Price		 Adjusted
Shares		 Adjusted
Price		 Cost Basis Days to
Max		 Price at
Max		 Max
Profit ($)		 Max Return (%)
There are no known unplanned open-market trades for this insider

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

MKTX / MarketAxess Holdings Inc. Insider Trades
Insider Sales - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made by Stephen P Casper in MKTX / MarketAxess Holdings Inc.. A consistent pattern of loss avoidance may suggest that future sale transactions may predict declines in price. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market purchases that were not part of an automatic trading plan.

Trade Date Reported
Shares		 Reported
Price		 Adjusted
Shares		 Adjusted
Price		 Cost Basis Days to
Min		 Price at
Min		 Max Loss
Avoided ($)		 Max Loss
Avoided (%)
2025-09-08 1,600 186.5900 1,600 186.5900 298,544 11 178.3200 -13,232 -4.43
2024-09-06 1,000 259.3900 1,000 259.3900 259,390
2024-06-07 500 199.4800 500 199.4800 99,740
2020-12-15 750 554.9600 750 554.9600 416,220
2020-08-27 500 500.0000 500 500.0000 250,000
2020-05-05 200 476.5300 200 476.5300 95,306
2020-05-05 200 477.8400 200 477.8400 95,568
2020-05-05 1,400 479.8600 1,400 479.8600 671,804
2020-05-05 200 480.9800 200 480.9800 96,196
2019-09-03 1,000 402.8201 1,000 402.8201 402,820
2019-06-07 102 337.3031 102 337.3031 34,405
2017-11-29 2,000 195.8411 2,000 195.8411 391,682
2017-05-17 230 184.7000 230 184.7000 42,481
2016-05-09 365 127.6893 365 127.6893 46,607
2015-12-07 1,500 112.3985 1,500 112.3985 168,598
2015-02-10 630 80.3471 630 80.3471 50,619
2014-12-08 2,000 69.0560 2,000 69.0560 138,112
2014-09-08 1,500 59.4793 1,500 59.4793 89,219
2014-07-30 1,930 57.0511 1,930 57.0511 110,109

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

MKTX / MarketAxess Holdings Inc. Insider Trades
Insider Transaction History
File
Date		 Trade
Date		 Form Insider Ticker Security Title Code 10b5-1 Direct Exercise
Price		 Unit
Price		 Units
Changed		 Value
Changed (1K)		 Remaining
Options		 Remaining
Shares
2025-09-09 2025-09-08 4 Casper Stephen P By family trust MKTX Common Stock, par value $0.003 per share S - Sale I 186.5900 -1,600 -299 43,208
2025-06-05 2025-06-04 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share A - Award D 784 9,985
2024-09-09 2024-09-06 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share S - Sale D 259.3900 -1,000 -259 9,201
2024-06-11 2024-06-07 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share S - Sale D 199.4800 -500 -100 10,201
2024-06-07 2024-06-05 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share A - Award D 781 10,701
2023-08-29 2023-08-28 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share G - Gift D -200 9,920
2023-06-09 2023-06-07 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share A - Award D 581 10,120
2022-06-10 2022-06-08 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share A - Award D 586 9,539
2021-08-03 2021-08-01 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share A - Award D 353 8,953
2021-03-12 2021-03-11 4 Casper Stephen P By family trust MKTX Common Stock, par value $0.003 per share G - Gift I 2,000 44,808
2021-03-12 2021-03-11 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share G - Gift D -2,000 8,600
2020-12-16 2020-12-15 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share S - Sale D 554.9600 -750 -416 10,600
2020-08-28 2020-08-27 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share S - Sale D 500.0000 -500 -250 11,350
2020-06-15 2020-06-11 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share A - Award D 283 11,850
2020-05-07 2020-05-05 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share S - Sale D 480.9800 -200 -96 11,567
2020-05-07 2020-05-05 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share S - Sale D 479.8600 -1,400 -672 11,767
2020-05-07 2020-05-05 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share S - Sale D 477.8400 -200 -96 13,167
2020-05-07 2020-05-05 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share S - Sale D 476.5300 -200 -95 13,367
2019-09-05 2019-09-03 4 Casper Stephen P By family trust MKTX Common Stock, par value $0.003 per share S - Sale I 402.8201 -1,000 -403 42,808
2019-08-01 2019-07-30 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share A - Award D 380 13,567
2019-06-10 2019-06-07 4 Casper Stephen P MKTX Stock Option (right to buy) M - Exercise D 10.77 -3,187 0
2019-06-10 2019-06-07 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share S - Sale D 337.3031 -102 -34 13,055
2019-06-10 2019-06-07 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share M - Exercise D 10.7700 3,187 34 13,157
2019-02-06 2018-12-12 5 Casper Stephen P By family trust MKTX Common Stock, par value $0.003 per share G - Gift I 43,808 43,808
2019-02-06 2018-12-12 5 Casper Stephen P MKTX Common Stock, par value $0.003 per share G - Gift D -43,808 9,970
2018-08-10 2018-08-08 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share A - Award D 702 53,778
2017-11-30 2017-11-29 4 Casper Stephen P MKTX Stock Option (right to buy) M - Exercise D 9.72 -4,225 0
2017-11-30 2017-11-29 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share S - Sale D 195.8411 -2,000 -392 53,076
2017-11-30 2017-11-29 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share M - Exercise D 9.7200 4,225 41 55,076
2017-08-14 2017-08-10 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share A - Award D 617 50,851
2017-05-18 2017-05-17 4 Casper Stephen P MKTX Employee Stock Option (right to buy) M - Exercise D 16.99 -2,500 0
2017-05-18 2017-05-17 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share S - Sale D 184.7000 -230 -42 50,234
2017-05-18 2017-05-17 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share M - Exercise D 16.9900 2,500 42 50,464
2017-03-10 2016-08-03 4/A Casper Stephen P MKTX Common Stock, par value $0.003 per share A - Award D 763 49,264
2016-12-29 2016-12-29 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share G - Gift D -1,300 47,868
2016-08-09 2016-08-03 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share A - Award D 667 49,168
2016-05-11 2016-05-09 4 Casper Stephen P MKTX Employee Stock Option (right to buy) M - Exercise D 9.30 -5,000 0
2016-05-11 2016-05-09 4 Casper Stephen P MKTX Common Stock, par value $0.003 S - Sale D 127.6893 -365 -47 48,501
2016-05-11 2016-05-09 4 Casper Stephen P MKTX Common Stock, par value $0.003 M - Exercise D 9.3000 5,000 46 48,866
2015-12-08 2015-12-07 4 Casper Stephen P MKTX Common Stock, par value $0.003 S - Sale D 112.3985 -1,500 -169 43,866
2015-11-25 2015-11-23 4 Casper Stephen P MKTX Common Stock, par value $0.003 G - Gift D -140 45,366
2015-08-10 2015-08-06 4 Casper Stephen P MKTX Common Stock, par value $0.003 A - Award D 1,177 45,506
2015-02-11 2015-02-10 4 Casper Stephen P MKTX Employee Stock Option (right to buy) M - Exercise D 10.04 -5,000 0
2015-02-11 2015-02-10 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share S - Sale D 80.3471 -630 -51 44,329
2015-02-11 2015-02-10 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share M - Exercise D 10.0400 5,000 50 44,959
2014-12-09 2014-12-08 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share S - Sale D 69.0560 -2,000 -138 39,959
2014-09-08 2014-09-08 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share S - Sale D 59.4793 -1,500 -89 41,959
2014-08-11 2014-08-08 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share A - Award D 1,960 43,459
2014-08-01 2014-07-30 4 Casper Stephen P MKTX Employee Stock Option (right to buy) M - Exercise D 11.00 -10,000 0
2014-08-01 2014-07-30 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share S - Sale D 57.0511 -1,930 -110 41,499
2014-08-01 2014-07-30 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share M - Exercise D 11.0000 10,000 110 43,429
2013-07-30 2013-07-26 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share A - Award D 2,010 33,429
2012-07-31 2012-07-27 4 Casper Stephen P MKTX Common Stock, par value $0.003 per share A - Award D 2,553 31,419
P
Åbent marked eller privat køb af ikke-afledte eller afledte værdipapirer
S
Åbent marked eller privat salg af ikke-afledte eller afledte værdipapirer
A
Tildeling, tildeling eller anden erhvervelse af værdipapirer fra virksomheden (såsom en option)
C
Konvertering af derivat
D
Salg eller overførsel af værdipapirer tilbage til virksomheden
F
Betaling af udnyttelseskurs eller skatteforpligtelse ved brug af en del af værdipapirer modtaget fra selskabet
G
Gave af værdipapirer af eller til insideren
K
Aktieswaps og lignende sikringstransaktioner
M
Udnyttelse eller konvertering af afledt værdipapir modtaget fra virksomheden (såsom en option)
V
En transaktion rapporteret frivilligt på formular 4
J
Andet (ledsaget af en fodnote, der beskriver transaktionen)