CME Group Inc.
BG ˙ BUL ˙ US12572Q1058
SecurityBG:MX4A / CME Group Inc.
InstitutionKentucky Retirement Systems
Latest Disclosed Ownership26,026 shares
Latest Disclosed Value $ 2,042
Kentucky Retirement Systems reports 15.27% increase in ownership of MX4A / CME Group Inc.

On May 19, 2026 - Kentucky Retirement Systems filed a 13F-HR form disclosing ownership of 26,026 shares of CME Group Inc. (BG:MX4A) valued at $2,042 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 22,579 shares of CME Group Inc.. This represents a change in shares of 15.27% 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)
2026-05-19 2026-03-31 13F CME GROUP COM 12572Q105 26,026 3,447 15.27 2 -99.97 0.1495
2026-02-10 2025-12-31 13F CME GROUP COM 12572Q105 22,579 0 0.00 6,166 1.07 0.1670
2025-11-13 2025-09-30 13F CME GROUP COM 12572Q105 22,579 -461 -2.00 6,101 -3.94 0.1687
2025-08-20 2025-06-30 13F CME GROUP COM 12572Q105 23,040 -1,510 -6.15 6,350 -2.49 0.1858
2025-04-22 2025-03-31 13F CME GROUP COM 12572Q105 24,550 -195 -0.79 6,513 13.33 0.1986
2025-02-03 2024-12-31 13F CME GROUP COM 12572Q105 24,745 -341 -1.36 5,747 3.81 0.1694
2024-11-06 2024-09-30 13F CME GROUP COM 12572Q105 25,086 -2,047 -7.54 5,535 3.77 0.1632
2024-08-12 2024-06-30 13F CME GROUP COM 12572Q105 27,133 -206 -0.75 5,334 -9.36 0.1545
2024-05-15 2024-03-31 13F CME GROUP COM 12572Q105 27,339 -1,464 -5.08 5,886 -2.97 0.1759
2024-02-08 2023-12-31 13F CME GROUP COM 12572Q105 28,803 295 1.03 6,066 6.27 0.1894
2023-10-12 2023-09-30 13F CME GROUP COM 12572Q105 28,508 -414 -1.43 5,708 114,040.00 0.1984
2023-08-07 2023-06-30 13F CME GROUP COM 12572Q105 28,922 480 1.69 5 0.00 0.1794
2023-05-10 2023-03-31 13F CME GROUP COM 12572Q105 28,442 183 0.65 5 25.00 0.2006
2023-02-06 2022-12-31 13F CME GROUP COM 12572Q105 28,259 123 0.44 5 -99.92 0.1874
2022-11-16 2022-09-30 13F CME GROUP COM 12572Q105 28,136 1,460 5.47 4,984 -8.73 0.2114
2022-08-08 2022-06-30 13F CME GROUP COM 12572Q105 26,676 3,768 16.45 5,461 0.22 0.2306
2022-05-09 2022-03-31 13F CME GROUP COM 12572Q105 22,908 984 4.49 5,449 8.78 0.2233
2022-02-04 2021-12-31 13F CME GROUP COM 12572Q105 21,924 910 4.33 5,009 23.25 0.2036
2021-11-17 2021-09-30 13F CME GROUP COM 12572Q105 21,014 103 0.49 4,064 -8.61 0.1912
2021-08-12 2021-06-30 13F CME GROUP COM 12572Q105 20,911 -1,446 -6.47 4,447 -2.61 0.2102
2021-05-14 2021-03-31 13F CME GROUP COM 12572Q105 22,357 542 2.48 4,566 14.98 0.2232
2021-02-11 2020-12-31 13F CME GROUP COM 12572Q105 21,815 895 4.28 3,971 13.46 0.2049
2020-11-12 2020-09-30 13F CME GROUP COM 12572Q105 20,920 957 4.79 3,500 7.86 0.2160
2020-08-12 2020-06-30 13F CME GROUP COM 12572Q105 19,963 -4,512 -18.44 3,245 -23.32 0.2277
2020-05-01 2020-03-31 13F CME GROUP COM 12572Q105 24,475 6,039 32.76 4,232 14.38 0.2893
2020-02-18 2019-12-31 13F CME GROUP COM 12572Q105 18,436 87 0.47 3,700 -4.59 0.2693
2019-11-05 2019-09-30 13F CME GROUP COM 12572Q105 18,349 1,678 10.07 3,878 19.84 0.3080
2019-08-07 2019-06-30 13F/A-1 CME GROUP COM 12572Q105 16,671 1,029 6.58 3,236 25.72 0.2853
2019-08-07 2019-06-30 13F CME GROUP COM 12572Q105 16,671 1,029 3,236
2019-05-22 2019-03-31 13F CME GROUP COM CL A 12572Q105 15,642 79 0.51 2,574 -12.09 0.2491
2019-02-25 2018-12-31 13F CME GROUP COM CL A 12572Q105 15,563 1,059 7.30 2,928 18.59 0.3208
2018-11-19 2018-09-30 13F/A-1 CME GROUP COM CL A 12572Q105 14,504 47 0.33 2,469 4.18 0.2360
2018-11-16 2018-09-30 13F CME GROUP COM 12572Q105 26,026 11,569 2,042
2018-08-13 2018-06-30 13F CME GROUP COM CL A 12572Q105 14,457 -3,307 -18.62 2,370 -17.51 0.2425
2018-05-07 2018-03-31 13F CME GROUP COM CL A 12572Q105 17,764 -3,221 -15.35 2,873 -6.26 0.2448
2018-02-13 2017-12-31 13F CME GROUP COM CL A 12572Q105 20,985 122 0.58 3,065 8.27 0.2183
2017-11-08 2017-09-30 13F CME GROUP COM CL A 12572Q105 20,863 -919 -4.22 2,831 3.78 0.2138
2017-08-18 2017-06-30 13F CME GROUP COM 12572Q105 21,782 6 0.03 2,728 5.45 0.2050
2017-05-24 2017-03-31 13F CME GROUP COM 12572Q105 21,776 -2,849 -11.57 2,587 -8.91 0.1992
2017-02-24 2016-12-31 13F CME GROUP COM 12572Q105 24,625 -1,273 -4.92 2,840 4.91 0.2032
2016-11-30 2016-09-30 13F CME GROUP COM 12572Q105 25,898 -2,899 -10.07 2,707 -3.49 0.1801
2016-09-12 2016-06-30 13F CME GROUP COM 12572Q105 28,797 -2,293 -7.38 2,805 -6.06 0.1815
2016-06-09 2016-03-31 13F CME GROUP COM 12572Q105 31,090 5,400 21.02 2,986 28.26 0.1812
2016-02-22 2015-12-31 13F CME GROUP COM 12572Q105 25,690 3,673 16.68 2,328 14.01 0.1714
2015-11-18 2015-09-30 13F CME GROUP COM 12572Q105 22,017 607 2.84 2,042 2.51 0.1759
2015-08-26 2015-06-30 13F CME GROUP COM 12572Q105 21,410 67 0.31 1,992 -1.43 0.1621
2015-05-29 2015-03-31 13F CME GROUP COM 12572Q105 21,343 -2,194 -9.32 2,021 -3.16 0.1641
2015-03-04 2014-12-31 13F CME GROUP COM 12572Q105 23,537 -1,036 -4.22 2,087 6.21 0.1539
2014-12-12 2014-09-30 13F CME GROUP COM 12572Q105 24,573 -1,584 -6.06 1,965 1.50 0.1442
2014-05-22 2014-03-31 13F CME GROUP COM 12572Q105 26,157 131 0.50 1,936 -5.19 0.1398
2014-02-13 2013-12-31 13F CME GROUP COM 12572Q105 26,026 -75 -0.29 2,042 5.91 0.1495
2013-11-15 2013-09-30 13F CME GROUP COM 12572Q105 26,101 26,101 1,928 0.1553
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.