Introduction

This page provides a comprehensive analysis of the known insider trading history of William R Shepard. Insiders are officers, directors, or significant investors in a company. It is illegal for insiders to make trades in their companies based on specific, non-public information. 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. Despite these restrictions, academic research suggests that insiders - in general - tend to outperform the market in their own companies.

Average Trade Profitability

The average trade profitability is the average return of all the open market purchases made by the insider in the last three years. To calculate this, we examine every open-market, unplanned purchase made by the insider, excluding all trades that were marked as part of a 10b5-1 trading plan. We then calculate the average performance of those trades over 3, 6, and 12 months, averaging each of those durations to generate a final performance metric for each trade. Finally, we average all of the performance metrics to calculate a performance metric for the insider. This list only includes insiders that have made at least three trades in the last two years.

If this insiders trade profitability is "N/A", then the insider either has not made any open-market purchases in the last three years, or the trades they’ve made are too recent to calculate a reliable performance metric.

Update Frequency: Daily

See the list of most profitable insider traders.

Companies with Reported Insider Positions

The SEC filings indicate William R Shepard has reported holdings or trades in the following companies:

Security Title Latest Reported Holdings
US:CME / CME Group Inc. Director 2,455
How to Interpret the Charts

The following charts show the stock performance of securities subsequent to each open-market, non-planned trade made by William R Shepard. Non-planned trade are trades that were not made as part of a 10b5-1 trading plan. The stock performance is charted as cumulative percent change in share price. For example, if an insider trade was made on January 1, 2019, the chart will show the daily percent change of the security to the present day. If the share price were to go from $10 to $15 during this time, the cumulative percent change in share price would be 50%. A change in price from $10 to $20 would be 100%, and a change in price of $10 to $5 would be -50%.

Ultimately, we are trying to determine how closely the insider’s trades correlate to excess returns (positive or negative) in the share price in order to see if the insider is timing their trades to profit from insider information. Consider the situation where an insider was doing this. In this situation, we would expect either (a) positive returns after purchases, or (b) negative returns after sales. In the case of (a), the PURCHASE chart would show a series of upwardly sloping curves, indicating positive returns after each purchase transaction. In the case of (b), the SALE chart would show a series of downward sloping curves, indicating negative returns after each sale transaction.

However, this alone is not enough to draw conclusions. If, for example, the share price of the company was in a non-cyclical climb over many years, then we would expect all the post-purchase plots to be upwardly sloping. Likewise, non-cyclical declines over many years would result in downward sloping post-trade plots. Neither of these charts would suggest insider trading activity.

The strongest indicator would be a situation where the share price was extremely cyclical, and there were both positive signals in the PURCHASE chart and negative plots on the SALE chart. This situation would be highly suggestive of an insider that was timing trades to their financial advantage.

Insider Trading History

This table shows the complete list of insider trades made by William R Shepard as disclosed to the Securities Exchange Commission (SEC).

File Date Tran Date Form Ticker Security Code 10b5-1 Shares Remaining Shares Percent
Change
Share
Price
Tran
Value
Remaining
Value
2025-06-26 2025-06-25 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 11 2,455 0.46 270.53 3,054 664,086
2025-06-26 2025-06-25 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 256 258,196 0.10 270.53 69,282 69,849,787
2025-06-26 2025-06-25 4 CME CME GROUP INC.
Common Stock Class A
A - Award 879 257,940 0.34 273.03 239,993 70,425,355
2025-03-27 2025-01-16 4/A CME CME GROUP INC.
Common Stock Class A
P - Purchase 60 2,432 2.53 227.96 13,689 554,374
2025-03-27 2025-01-16 4/A CME CME GROUP INC.
Common Stock Class A
P - Purchase 1,362 256,798 0.53 227.96 310,509 58,539,770
2025-03-27 2025-03-26 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 12 2,443 0.48 262.62 3,041 641,704
2025-03-27 2025-03-26 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 263 257,061 0.10 262.62 68,954 67,509,357
2025-01-17 2025-01-16 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 60 2,432 2.54 227.96 13,757 554,442
2025-01-17 2025-01-16 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 1,369 256,805 0.54 227.96 312,041 58,541,302
2024-12-30 2024-12-27 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 264 255,436 0.10 232.89 61,568 59,488,562
2024-12-30 2024-12-27 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 12 2,372 0.49 232.89 2,714 552,378
2024-09-27 2024-09-25 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 12 2,360 0.53 218.50 2,700 515,700
2024-09-27 2024-09-25 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 280 255,172 0.11 218.50 61,245 55,755,069
2024-06-26 2024-06-25 4 CME CME GROUP INC.
Common Stock Class A
A - Award 1,237 254,892 0.49 194.10 240,102 49,474,468
2024-06-26 2024-06-25 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 312 253,655 0.12 195.07 60,885 49,480,411
2024-06-26 2024-06-25 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 14 2,348 0.59 195.07 2,684 457,990
2024-03-27 2024-03-26 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 282 253,343 0.11 214.71 60,561 54,395,174
2024-03-27 2024-03-26 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 12 2,334 0.54 214.71 2,670 501,147
2024-01-19 2024-01-18 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 1,331 253,060 0.53 202.44 269,488 51,229,561
2024-01-19 2024-01-18 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 59 2,322 2.59 202.44 11,880 469,991
2023-12-29 2023-12-28 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 266 251,729 0.11 210.79 56,170 53,062,012
2023-12-29 2023-12-28 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 12 2,263 0.52 210.79 2,476 477,006
2023-10-06 2023-09-27 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 280 251,463 0.11 199.84 55,863 50,252,325
2023-10-06 2023-09-27 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 12 2,251 0.55 199.84 2,463 449,879
2023-06-28 2023-06-27 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 14 2,239 0.61 179.77 2,448 402,482
2023-06-28 2023-06-27 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 309 251,183 0.12 179.77 55,523 45,155,214
2023-06-28 2023-06-26 4 CME CME GROUP INC.
Common Stock Class A
A - Award 811 250,874 0.32 178.89 145,080 44,878,921
2023-03-29 2022-12-29 5 CME CME GROUP INC.
Common Stock Class A
P - Purchase 195 248,327 0.08 168.67 32,839 41,885,273
2023-03-29 2023-01-18 4/A CME CME GROUP INC.
Common Stock Class A
P - Purchase 1,244 249,571 0.50 175.98 218,906 43,919,448
2023-03-29 2023-01-18 4/A CME CME GROUP INC.
Common Stock Class A
P - Purchase 55 2,212 2.54 175.98 9,651 389,290
2023-03-29 2022-12-28 4/A CME CME GROUP INC.
Common Stock Class A
P - Purchase 289 248,132 0.12 168.11 48,645 41,713,481
2023-03-29 2022-12-28 4/A CME CME GROUP INC.
Common Stock Class A
P - Purchase 13 2,157 0.59 168.11 2,145 362,662
2023-03-29 2023-03-28 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 195 250,063 0.08 186.45 36,337 46,624,321
2023-03-29 2023-03-27 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 298 249,869 0.12 185.32 55,195 46,305,632
2023-03-29 2023-03-27 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 13 2,225 0.59 185.32 2,433 412,385
2023-01-20 2023-01-18 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 1,244 249,376 0.50 175.98 218,906 43,885,186
2023-01-20 2023-01-18 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 55 2,212 2.54 175.98 9,651 389,290
2023-01-20 2022-12-28 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 289 248,132 0.12 168.11 48,645 41,713,481
2023-01-20 2022-12-28 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 13 2,157 0.59 168.11 2,145 362,662
2022-11-08 2020-12-29 5 CME CME GROUP INC.
Common Stock Class A
L - Other 9 2,024 0.47 181.11 1,712 366,530
2022-11-08 2020-09-25 5 CME CME GROUP INC.
Common Stock Class A
L - Other 10 2,014 0.52 163.61 1,703 329,567
2022-11-08 2020-06-25 5 CME CME GROUP INC.
Common Stock Class A
L - Other 4 2,004 0.20 166.66 655 333,975
2022-11-08 2021-12-28 5 CME CME GROUP INC.
Common Stock Class A
L - Other 8 2,084 0.39 229.52 1,868 478,258
2022-11-08 2021-09-27 5 CME CME GROUP INC.
Common Stock Class A
L - Other 9 2,076 0.45 198.48 1,860 411,964
2022-11-08 2021-06-25 5 CME CME GROUP INC.
Common Stock Class A
L - Other 9 2,066 0.41 217.60 1,852 449,610
2022-11-08 2021-03-25 5 CME CME GROUP INC.
Common Stock Class A
L - Other 9 2,058 0.44 203.88 1,844 419,526
2022-11-08 2021-01-13 5 CME CME GROUP INC.
Common Stock Class A
L - Other 25 2,049 1.23 202.48 5,036 414,814
2022-11-08 2022-11-04 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 8,645 247,843 3.61 170.00 1,469,636 42,132,862
2022-11-08 2022-11-04 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 40,000 239,198 20.08 170.00 6,800,000 40,663,608
2022-11-08 2022-09-27 4 CME CME GROUP INC.
Common Stock Class A
L - Other 12 2,145 0.55 180.93 2,133 388,010
2022-11-08 2022-06-27 4 CME CME GROUP INC.
Common Stock Class A
L - Other 10 2,133 0.47 211.06 2,123 450,137
2022-11-08 2022-03-25 4 CME CME GROUP INC.
Common Stock Class A
L - Other 9 2,123 0.41 245.59 2,114 521,310
2022-11-08 2022-01-14 4 CME CME GROUP INC.
Common Stock Class A
L - Other 30 2,114 1.46 222.28 6,746 469,917
2022-06-29 2022-06-27 4 CME CME GROUP INC.
Common Stock Class A
A - Award 1,146 199,198 0.58 209.44 240,018 41,719,965
2022-01-26 2022-01-25 4 CME CME GROUP INC.
Common Stock Class A
A - Award 75 198,052 0.04 221.79 16,634 43,925,885
2021-06-29 2021-06-25 4 CME CME GROUP INC.
Common Stock Class A
A - Award 917 197,977 0.47 218.12 200,016 43,182,677
2020-06-29 2020-06-25 4 CME CME GROUP INC.
Common Stock Class A
A - Award 1,186 199,063 0.60
2020-06-12 2020-06-11 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 1,229 2,000 159.40 178.10 218,885 356,200
2020-06-04 2020-06-02 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 771 771 178.10 137,315 137,315
2019-06-27 2019-06-25 4 CME CME GROUP INC.
Common Stock Class A
A - Award 1,009 195,874 0.52
2018-09-27 2018-09-25 4 CME CME GROUP INC.
Common Stock Class A
A - Award 173 194,865 0.09
2018-06-27 2018-06-25 4 CME CME GROUP INC.
Common Stock Class A
A - Award 961 194,692 0.50
2017-06-27 2017-06-26 4 CME CME GROUP INC.
Common Stock Class A
A - Award 1,294 57,108 2.32
2017-06-27 2016-05-31 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 100 55,814 0.18 97.78 9,778 5,457,493
2017-06-27 2012-03-12 4 CME CME GROUP INC.
Common Stock Class A
P - Purchase 375 55,714 0.68 54.25 20,344 3,022,484
2017-02-14 2014-12-29 5 CME CME GROUP INC.
Common Stock Class A
J - Other 155 55,339 0.28 90.34 14,021 4,999,297
2017-02-14 2014-09-26 5 CME CME GROUP INC.
Common Stock Class A
J - Other 175 55,183 0.32 79.46 13,940 4,384,880
2017-02-14 2014-06-26 5 CME CME GROUP INC.
Common Stock Class A
J - Other 198 55,008 0.36 69.65 13,788 3,831,311
2017-02-14 2014-03-26 5 CME CME GROUP INC.
Common Stock Class A
J - Other 180 54,810 0.33 76.25 13,761 4,179,270
2017-02-14 2013-12-27 5 CME CME GROUP INC.
Common Stock Class A
J - Other 164 54,630 0.30 79.83 13,102 4,361,083
2017-02-14 2013-09-30 5 CME CME GROUP INC.
Common Stock Class A
J - Other 174 54,466 0.32 75.04 13,023 4,087,092
2017-02-14 2013-06-26 5 CME CME GROUP INC.
Common Stock Class A
J - Other 170 54,292 0.31 76.26 12,947 4,140,305
2017-02-14 2013-03-26 5 CME CME GROUP INC.
Common Stock Class A
J - Other 209 54,122 0.39 61.44 12,853 3,325,266
2017-02-14 2012-12-27 5 CME CME GROUP INC.
Common Stock Class A
J - Other 253 53,913 0.47 50.36 12,741 2,715,058
2017-02-14 2012-09-28 5 CME CME GROUP INC.
Common Stock Class A
J - Other 116 52,340 0.22 53.19 6,182 2,783,986
2017-02-14 2012-09-26 5 CME CME GROUP INC.
Common Stock Class A
J - Other 222 53,660 0.42 56.86 12,639 3,051,107
2017-02-14 2012-06-26 5 CME CME GROUP INC.
Common Stock Class A
J - Other 232 53,438 0.44 53.67 12,425 2,868,001
2017-02-14 2012-03-26 5 CME CME GROUP INC.
Common Stock Class A
J - Other 208 53,206 0.39 59.30 12,332 3,155,128
2017-02-14 2011-12-31 5 CME CME GROUP INC.
Common Stock Class A
J - Other 158 52,998 0.30 48.65 7,698 2,578,364
2017-02-14 2011-09-27 5 CME CME GROUP INC.
Common Stock Class A
J - Other 142 52,840 0.27 53.90 7,657 2,848,077
2017-02-14 2011-06-28 5 CME CME GROUP INC.
Common Stock Class A
J - Other 134 52,698 0.26 56.74 7,620 2,990,082
2017-02-14 2011-03-28 5 CME CME GROUP INC.
Common Stock Class A
J - Other 128 52,564 0.24 59.16 7,584 3,109,665
2017-02-14 2010-12-28 5 CME CME GROUP INC.
Common Stock Class A
J - Other 95 52,435 0.18 65.31 6,208 3,424,559
2016-06-29 2016-06-27 4 CME CME GROUP INC.
Common Stock Class A
A - Award 1,719 188,848 0.92
2015-06-29 2015-06-25 4 CME CME GROUP INC.
Common Stock Class A
A - Award 1,702 187,129 0.92
2014-08-27 2014-08-25 4 CME CME GROUP INC.
Common Stock Class A
A - Award 793 185,427 0.43
2014-06-27 2014-06-25 4 CME CME GROUP INC.
Common Stock Class A
A - Award 1,415 184,634 0.77
2013-06-27 2013-06-25 4 CME CME GROUP INC.
Common Stock Class A
A - Award 982 183,219 0.54
2012-06-27 2012-06-25 4 CME CME GROUP INC.
Common Stock Class A
A - Award 374 36,437 1.04
2012-02-21 2012-02-16 4 CME CME GROUP INC.
Common Stock Class B1
P - Purchase 1 5 25.00 295.65 296 1,478
2005-05-26 2005-05-25 4 CME CHICAGO MERCANTILE EXCHANGE HOLDINGS INC
Common Stock Class A
A - Award 100 37,386 0.27
P
Open market or private purchase of non-derivative or derivative security
S
Open market or private sale of non-derivative or derivative security
A
Grant, award, or other acquisition of securities from the company (such as an option)
C
Conversion of derivative
D
Sale or transfer of securities back to the company
F
Payment of exercise price or tax liability using portion of securities received from the company
G
Gift of securities by or to the insider
K
Equity swaps and similar hedging transactions
M
Exercise or conversion of derivative security received from the company (such as an option)
V
A transaction voluntarily reported on Form 4
J
Other (accompanied by a footnote describing the transaction)