CME Group Inc.
BG ˙ BUL ˙ US12572Q1058
SecurityBG:MX4A / CME Group Inc.
InstitutionBoston Common Asset Management, LLC
Latest Disclosed Ownership39,517 shares
Latest Disclosed Value $ 11,671,346
Boston Common Asset Management, LLC reports 3.11% decrease in ownership of MX4A / CME Group Inc.

On May 7, 2026 - Boston Common Asset Management, LLC filed a 13F-HR form disclosing ownership of 39,517 shares of CME Group Inc. (BG:MX4A) valued at $11,671,346 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 7, 2026 disclosing 40,787 shares of CME Group Inc.. This represents a change in shares of -3.11% 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)
2026-05-07 2026-03-31 13F CME Group COM 12572Q105 39,517 -1,270 -3.11 11,671 4.79 0.7516
2026-05-07 2025-12-31 13F/A-1 CME Group COM 12572Q105 40,787 -12,022 -22.77 11,138 -21.94 0.6712
2026-01-15 2025-12-31 13F CME Group COM 12572Q105 51,564 -1,245 14,081 0.7135
2025-10-30 2025-09-30 13F CME GROUP INC COM COM 12572Q105 52,809 3,211 6.47 14,268 4.37 0.3991
2025-07-22 2025-06-30 13F CME GROUP INC COM COM 12572Q105 49,598 17,222 53.19 13,670 59.16 0.3832
2025-04-03 2025-03-31 13F CME GROUP INC COM COM 12572Q105 32,376 -870 -2.62 8,589 11.26 0.2607
2025-01-15 2024-12-31 13F CME GROUP INC COM COM 12572Q105 33,246 -1,916 -5.45 7,721 110,185.71 0.2248
2024-10-09 2024-09-30 13F CME GROUP INC COM COM 12572Q105 35,162 -480 -1.35 8 0.00 0.2022
2024-07-08 2024-06-30 13F CME GROUP INC COM COM 12572Q105 35,642 391 1.11 7 0.00 0.1796
2024-04-11 2024-03-31 13F CME GROUP INC COM COM 12572Q105 35,251 -1,008 -2.78 8 0.00 0.1815
2024-01-09 2023-12-31 13F CME GROUP INC COM COM 12572Q105 36,259 -8,163 -18.38 8 -12.50 0.1738
2023-10-11 2023-09-30 13F CME GROUP INC COM COM 12572Q105 44,422 -378 -0.84 9 0.00 0.2122
2023-07-24 2023-06-30 13F CME GROUP INC COM COM 12572Q105 44,800 -2,551 -5.39 8 -11.11 0.1773
2023-05-17 2023-03-31 13F CME GROUP INC COM COM 12572Q105 47,351 66 0.14 9 28.57 0.1887
2023-01-26 2022-12-31 13F CME GROUP INC COM COM 12572Q105 47,285 14,300 43.35 8 -99.88 0.3803
2022-10-20 2022-09-30 13F CME GROUP INC COM COM 12572Q105 32,985 10,586 47.26 5,843 27.44 0.3062
2022-08-10 2022-06-30 13F CME GROUP INC COM COM 12572Q105 22,399 -340 -1.50 4,585 -15.23 0.2285
2022-05-16 2022-03-31 13F CME GROUP INC COM COM 12572Q105 22,739 309 1.38 5,409 5.56 0.2337
2022-01-31 2021-12-31 13F CME GROUP INC COM COM 12572Q105 22,430 -813 -3.50 5,124 13.99 0.2070
2021-11-12 2021-09-30 13F CME GROUP INC COM COM 12572Q105 23,243 -377 -1.60 4,495 -10.53 0.1943
2021-08-19 2021-06-30 13F CME GROUP INC COM COM 12572Q105 23,620 113 0.48 5,024 4.64 0.2160
2021-05-14 2021-03-31 13F CME GROUP INC COM COM 12572Q105 23,507 -95 -0.40 4,801 11.73 0.3030
2021-02-05 2020-12-31 13F CME GROUP INC COM COM 12572Q105 23,602 -48 -0.20 4,297 8.59 0.2999
2020-11-10 2020-09-30 13F CME GROUP INC COM COM 12572Q105 23,650 -316 -1.32 3,957 1.59 0.3761
2020-08-10 2020-06-30 13F CME GROUP INC COM COM 12572Q105 23,966 -556 -2.27 3,895 -8.14 0.4156
2020-05-08 2020-03-31 13F CME GROUP INC COM COM 12572Q105 24,522 5,301 27.58 4,240 9.90 0.5979
2020-01-28 2019-12-31 13F CME GROUP INC COM COM 12572Q105 19,221 -12,678 -39.74 3,858 -42.78 0.4495
2019-11-07 2019-09-30 13F CME GROUP INC COM COM 12572Q105 31,899 -14,811 -31.71 6,742 -25.64 0.8325
2019-07-26 2019-06-30 13F CME GROUP INC COM CL A COM 12572Q105 46,710 10,093 27.56 9,067 50.46 1.1296
2019-05-03 2019-03-31 13F CME GROUP INC COM CL A COM 12572Q105 36,617 13,142 55.98 6,026 36.46 0.7822
2019-01-25 2018-12-31 13F CME GROUP INC COM CL A COM 12572Q105 23,475 -25,994 -52.55 4,416 -47.55 0.6440
2018-11-01 2018-09-30 13F CME GROUP INC COM CL A COM 12572Q105 49,469 -3,138 -5.96 8,420 -2.35 1.0442
2018-08-06 2018-06-30 13F CME GROUP INC COM COM 12572Q105 52,607 -397 -0.75 8,623 0.58 1.0677
2018-04-26 2018-03-31 13F CME GROUP INC COM COM 12572Q105 53,004 -3,855 -6.78 8,573 3.24 1.0100
2018-02-07 2017-12-31 13F CME GROUP INC COM COM 12572Q105 56,859 2,918 5.41 8,304 13.46 0.9851
2017-11-13 2017-09-30 13F CME GROUP INC COM COM 12572Q105 53,941 305 0.57 7,319 8.96 0.9123
2017-08-14 2017-06-30 13F CME GROUP INC COM COM 12572Q105 53,636 -4,402 -7.58 6,717 -2.58 0.8845
2017-05-24 2017-03-31 13F CME GROUP INC COM COM 12572Q105 58,038 -11,822 -16.92 6,895 -14.43 0.9372
2017-02-14 2016-12-31 13F CME GROUP INC COM COM 12572Q105 69,860 455 0.66 8,058 11.08 1.1761
2016-11-04 2016-09-30 13F CME GROUP INC COM COM 12572Q105 69,405 -11,382 -14.09 7,254 -7.82 0.3948
2016-07-19 2016-06-30 13F CME GROUP INC COM COM 12572Q105 80,787 -145 -0.18 7,869 1.22 0.4517
2016-05-11 2016-03-31 13F CME GROUP INC COM COM 12572Q105 80,932 -735 -0.90 7,774 5.07 0.4397
2016-02-12 2015-12-31 13F CME GROUP INC COM COM 12572Q105 81,667 -3,595 -4.22 7,399 -6.42 0.4159
2015-11-18 2015-09-30 13F CME GROUP INC COM COM 12572Q105 85,262 1,460 1.74 7,907 1.38 0.4825
2015-08-11 2015-06-30 13F CME GROUP INC COM COM 12572Q105 83,802 -1,940 -2.26 7,799 -3.97 0.4136
2015-04-15 2015-03-31 13F CME GROUP INC COM COM 12572Q105 85,742 85,742 0.00 8,121 0.4332
2015-02-03 2014-12-31 13F CME GROUP INC COM COM 12572Q105 0 -84,702 -100.00 0 -100.00
2014-10-30 2014-09-30 13F CME GROUP INC COM COM 12572Q105 84,702 22,572 36.33 6,772 53.63 0.3777
2014-07-23 2014-06-30 13F CME GROUP INC COM COM 12572Q105 62,130 58 0.09 4,408 -4.07 0.2404
2014-05-05 2014-03-31 13F CME GROUP INC COM COM 12572Q105 62,072 745 1.21 4,595 -4.51 0.2599
2014-01-27 2013-12-31 13F CME GROUP INC COM COM 12572Q105 61,327 -10,481 -14.60 4,812 -9.29 0.2685
2013-11-05 2013-09-30 13F CME GROUP INC COM COM 12572Q105 71,808 39,245 120.52 5,305 114.52 0.3062
2013-08-07 2013-06-30 13F CME GROUP INC COM COM 12572Q105 32,563 32,563 2,473 0.1539
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.