CME Group Inc.
BG ˙ BUL ˙ US12572Q1058
SecurityBG:MX4A / CME Group Inc.
InstitutionRobeco Institutional Asset Management B.V.
Latest Disclosed Ownership277,577 shares
Latest Disclosed Value $ 81,982,368
Robeco Institutional Asset Management B.V. reports 6.01% decrease in ownership of MX4A / CME Group Inc.

On April 21, 2026 - Robeco Institutional Asset Management B.V. filed a 13F-HR form disclosing ownership of 277,577 shares of CME Group Inc. (BG:MX4A) valued at $81,982,368 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 295,339 shares of CME Group Inc.. This represents a change in shares of -6.01% 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)
2026-04-21 2026-03-31 13F CME GROUP COM 12572Q105 277,577 -17,762 -6.01 81,982 1.65 0.1169
2026-01-23 2025-12-31 13F CME GROUP COM 12572Q105 295,339 -344,257 -53.82 80,651 -53.33 0.1149
2025-10-22 2025-09-30 13F CME GROUP COM 12572Q105 639,596 -81,558 -11.31 172,812 -13.06 0.2503
2025-07-18 2025-06-30 13F CME GROUP COM 12572Q105 721,154 417,342 137.37 198,764 146.61 0.3214
2025-04-23 2025-03-31 13F CME GROUP COM 12572Q105 303,812 185,941 157.75 80,598 194.44 0.1566
2025-01-23 2024-12-31 13F CME GROUP COM 12572Q105 117,871 -33,676 -22.22 27,373 -18.14 0.0519
2024-10-29 2024-09-30 13F CME GROUP COM 12572Q105 151,547 -6,786 -4.29 33,439 7.42 0.0664
2024-07-23 2024-06-30 13F CME GROUP COM 12572Q105 158,333 -7,248 -4.38 31,128 -12.68 0.0670
2024-04-24 2024-03-31 13F CME GROUP COM 12572Q105 165,581 3,598 2.22 35,648 4.50 0.0775
2024-02-14 2023-12-31 13F/A-1 CME GROUP COM 12572Q105 161,983 6,450 4.15 34,114 9.55 0.0827
2024-02-08 2023-12-31 13F CME GROUP COM 12572Q105 111,031 -44,502 162 0.0303
2023-10-24 2023-09-30 13F CME GROUP COM 12572Q105 155,533 114,463 278.70 31,141 309.25 0.0832
2023-07-24 2023-06-30 13F CME GROUP COM 12572Q105 41,070 11,103 37.05 7,610 32.58 0.0200
2023-05-04 2023-03-31 13F CME GROUP COM 12572Q105 29,967 -32,318 -51.89 5,739 -45.20 0.0156
2023-02-07 2022-12-31 13F CME GROUP COM 12572Q105 62,285 -26,296 -29.69 10,474 -33.25 0.0302
2022-12-01 2022-09-30 13F/A-1 CME GROUP COM 12572Q105 88,581 -7,302 -7.62 15,691 -20.05 0.0507
2022-10-27 2022-09-30 13F CME GROUP COM 12572Q105 88,581 -7,302 15,691 0.0500
2022-12-01 2022-06-30 13F/A-1 CME GROUP COM 12572Q105 95,883 50,393 110.78 19,626 81.40 0.0610
2022-07-27 2022-06-30 13F CME GROUP COM 12572Q105 95,883 50,393 19,626 0.0601
2022-12-01 2022-03-31 13F/A-1 CME GROUP COM 12572Q105 45,490 22,031 93.91 10,819 101.85 0.0255
2022-04-26 2022-03-31 13F CME GROUP COM 12572Q105 45,490 22,031 10,819 0.0252
2022-12-01 2021-12-31 13F/A-1 CME GROUP COM 12572Q105 23,459 -316 -1.33 5,360 16.60 0.0114
2022-01-31 2021-12-31 13F CME GROUP COM 12572Q105 23,459 -316 5,360 0.0113
2022-12-01 2021-09-30 13F/A-1 CME GROUP COM 12572Q105 23,775 0 0.00 4,597 -9.08 0.0102
2021-10-20 2021-09-30 13F CME GROUP COM 12572Q105 23,775 0 4,597 0.0101
2022-12-01 2021-06-30 13F/A-1 CME GROUP COM 12572Q105 23,775 -219,741 -90.24 5,056 -89.83 0.0112
2021-07-28 2021-06-30 13F CME GROUP COM 12572Q105 23,775 -219,741 5,056 0.0111
2022-12-01 2021-03-31 13F/A-1 CME GROUP COM 12572Q105 243,516 15 0.01 49,732 12.19 0.1226
2021-04-23 2021-03-31 13F CME GROUP COM 12572Q105 243,516 15 49,732 0.1208
2022-12-01 2020-12-31 13F/A-1 CME GROUP COM 12572Q105 243,501 -22,211 -8.36 44,329 -0.29 0.1165
2021-01-28 2020-12-31 13F CME GROUP COM 12572Q105 243,501 -22,211 44,329 0.1151
2021-01-19 2020-09-30 13F/A-1 CME GROUP COM 12572Q105 265,712 -23,345 -8.08 44,457 -5.38 0.1374
2020-10-29 2020-09-30 13F CME GROUP COM 12572Q105 265,712 -23,345 44,457 137,297.6850
2021-01-19 2020-06-30 13F/A-1 CME GROUP COM 12572Q105 289,057 82,831 40.17 46,983 31.76 0.1596
2020-07-20 2020-06-30 13F CME GROUP COM 12572Q105 289,057 82,831 46,983 159,421.6993
2021-01-19 2020-03-31 13F/A-1 CME GROUP COM 12572Q105 206,226 56,749 37.97 35,659 18.84 0.1430
2020-04-30 2020-03-31 13F CME GROUP COM 12572Q105 206,226 56,749 35,659 142,929.3138
2021-01-19 2019-12-31 13F/A-1 CME GROUP COM 12572Q105 149,477 114,054 321.98 30,005 300.81 0.0961
2020-02-06 2019-12-31 13F CME GROUP COM 12572Q105 149,477 114,054 30,005 95,968.6851
2021-01-19 2019-09-30 13F/A-1 CME GROUP COM 12572Q105 35,423 -158,990 -81.78 7,486 -80.16 0.0264
2019-10-17 2019-09-30 13F CME GROUP COM 12572Q105 35,423 -158,990 7,486 26,391.2286
2021-01-19 2019-06-30 13F/A-1 CME GROUP COM 12572Q105 194,413 -91,497 -32.00 37,738 -19.80 0.1333
2019-07-19 2019-06-30 13F CME GROUP COM 12572Q105 194,413 -91,497 37,738 133,074.0591
2021-01-19 2019-03-31 13F/A-1 CME GROUP COM CL A 12572Q105 285,910 -183,300 -39.07 47,054 -46.69 0.1730
2019-05-02 2019-03-31 13F CME GROUP COM CL A 12572Q105 285,910 -183,300 47,054 172,765.5493
2021-01-19 2018-12-31 13F/A-1 CME GROUP COM CL A 12572Q105 469,210 -25,977 -5.25 88,268 4.72 0.3963
2019-02-08 2018-12-31 13F CME GROUP COM CL A 12572Q105 469,210 -25,977 88,268 395,656.9358
2021-01-19 2018-09-30 13F/A-1 CME GROUP COM CL A 12572Q105 495,187 -6,607 -1.32 84,286 2.47 0.3338
2018-10-25 2018-09-30 13F CME GROUP COM CL A 12572Q105 495,187 -6,607 84,286
2021-01-19 2018-06-30 13F/A-1 CME GROUP COM CL A 12572Q105 501,794 244,984 95.40 82,255 98.02 0.3747
2018-08-03 2018-06-30 13F CME GROUP COM CL A 12572Q105 501,794 244,984 82,255
2021-01-19 2018-03-31 13F/A-1 CME GROUP COM CL A 12572Q105 256,810 148,374 136.83 41,539 162.29 0.1949
2018-05-07 2018-03-31 13F CME GROUP COM CL A 12572Q105 256,810 148,374 41,539 194,258.4717
2021-01-19 2017-12-31 13F/A-1 CME GROUP COM CL A 12572Q105 108,436 21,450 24.66 15,837 34.19 0.0821
2018-01-25 2017-12-31 13F CME GROUP COM CL A 12572Q105 108,436 21,450 15,837
2021-01-19 2017-09-30 13F/A-1 CME GROUP COM CL A 12572Q105 86,986 45,661 110.49 11,802 128.06 0.0733
2017-10-17 2017-09-30 13F CME GROUP COM CL A 12572Q105 86,986 45,661 11,802 73,117.5303
2021-01-19 2017-06-30 13F/A-1 CME GROUP COM 12572Q105 41,325 -70,291 -62.98 5,175 -60.97 0.0333
2017-08-07 2017-06-30 13F CME GROUP COM 12572Q105 41,325 -70,291 5,175 33,693.4178
2021-01-19 2017-03-31 13F/A-1 CME GROUP COM 12572Q105 111,616 67,392 152.39 13,259 159.88 0.0883
2017-05-15 2017-03-31 13F CME GROUP COM 12572Q105 111,616 67,392 13,259 88,065.4773
2017-02-09 2016-12-31 13F CME GROUP COM 12572Q105 44,224 -5,070 -10.29 5,102 -0.97 0.0399
2016-11-07 2016-09-30 13F CME GROUP COM 12572Q105 49,294 25,983 111.46 5,152 126.96 0.0381
2016-07-22 2016-06-30 13F CME GROUP COM 12572Q105 23,311 -8,483 -26.68 2,270 -25.65 0.0172
2016-05-16 2016-03-31 13F CME GROUP COM 12572Q105 31,794 12,765 67.08 3,053 77.09 0.0245
2016-02-08 2015-12-31 13F CME GROUP COM 12572Q105 19,029 -47,825 -71.54 1,724 -72.18 0.0147
2015-11-12 2015-09-30 13F CME GROUP COM 12572Q105 66,854 -16,597 -19.89 6,198 -20.21 0.0472
2015-08-17 2015-06-30 13F CME GROUP COM 12572Q105 83,451 11,283 15.63 7,768 13.62 0.0590
2015-04-24 2015-03-31 13F CME GROUP COM 12572Q105 72,168 32,177 80.46 6,837 92.86 0.0514
2015-02-12 2014-12-31 13F CME GROUP COM 12572Q105 39,991 4,036 11.23 3,545 23.30 0.0254
2014-11-10 2014-09-30 13F CME GROUP COM 12572Q105 35,955 10,213 39.67 2,875 57.45 0.0205
2014-08-13 2014-06-30 13F CME GROUP COM 12572Q105 25,742 -14,841 -36.57 1,826 -39.19 0.0131
2014-05-07 2014-03-31 13F CME GROUP COM 12572Q105 40,583 5,797 16.66 3,003 10.04 0.0230
2014-02-04 2013-12-31 13F CME GROUP COM 12572Q105 34,786 -9,930 -22.21 2,729 -17.35 0.0227
2013-11-12 2013-09-30 13F CME GROUP COM 12572Q105 44,716 3,970 9.74 3,302 6.69 0.0321
2013-08-27 2013-06-30 13F CME Group COM 12572Q105 40,746 40,746 3,095 0.0313
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.