CME Group Inc.
BG ˙ BUL ˙ US12572Q1058
SecurityBG:MX4A / CME Group Inc.
InstitutionKorea Investment CORP
Latest Disclosed Ownership213,988 shares
Latest Disclosed Value $ 63,201,356
Korea Investment CORP reports 3.75% decrease in ownership of MX4A / CME Group Inc.

On May 13, 2026 - Korea Investment CORP filed a 13F-HR form disclosing ownership of 213,988 shares of CME Group Inc. (BG:MX4A) valued at $63,201,356 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 222,328 shares of CME Group Inc.. This represents a change in shares of -3.75% 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)
2026-05-13 2026-03-31 13F CME GROUP COM 12572Q105 213,988 -8,340 -3.75 63,201 4.10 0.1309
2026-02-13 2025-12-31 13F CME GROUP COM 12572Q105 222,328 -14,549 -6.14 60,713 -5.14 0.1195
2025-11-13 2025-09-30 13F CME GROUP COM 12572Q105 236,877 7,120 3.10 64,002 1.07 0.1316
2025-08-13 2025-06-30 13F CME GROUP COM 12572Q105 229,757 7,684 3.46 63,326 7.49 0.1409
2025-05-14 2025-03-31 13F CME GROUP COM 12572Q105 222,073 6,186 2.87 58,914 17.51 0.1428
2025-02-12 2024-12-31 13F CME GROUP COM 12572Q105 215,887 -931 -0.43 50,135 4.80 0.1189
2024-11-13 2024-09-30 13F CME GROUP COM 12572Q105 216,818 -23,041 -9.61 47,841 1.45 0.1135
2024-08-13 2024-06-30 13F CME GROUP COM 12572Q105 239,859 -9,509 -3.81 47,156 -12.16 0.1188
2024-05-14 2024-03-31 13F CME GROUP COM 12572Q105 249,368 -2,741 -1.09 53,686 1.12 0.1362
2024-02-13 2023-12-31 13F CME GROUP COM 12572Q105 252,109 1,674 0.67 53,094 5.89 0.1394
2023-11-13 2023-09-30 13F CME GROUP COM 12572Q105 250,435 -744 -0.30 50,142 7.74 0.1477
2023-08-11 2023-06-30 13F CME GROUP COM 12572Q105 251,179 -19,387 -7.17 46,541 -10.19 0.1308
2023-05-12 2023-03-31 13F CME GROUP COM 12572Q105 270,566 34,294 14.51 51,819 30.42 0.1509
2023-02-13 2022-12-31 13F CME GROUP COM 12572Q105 236,272 112 0.05 39,732 -5.02 0.1248
2022-11-10 2022-09-30 13F CME GROUP COM 12572Q105 236,160 27,462 13.16 41,831 -2.08 0.1288
2022-08-12 2022-06-30 13F CME GROUP COM 12572Q105 208,698 45,598 27.96 42,720 10.12 0.1306
2022-05-13 2022-03-31 13F CME GROUP COM 12572Q105 163,100 -79,194 -32.69 38,795 -29.91 0.0959
2022-02-09 2021-12-31 13F CME GROUP COM 12572Q105 242,294 11,089 4.80 55,354 23.81 0.1439
2021-11-12 2021-09-30 13F CME GROUP COM 12572Q105 231,205 -31,774 -12.08 44,710 -20.06 0.1333
2021-08-12 2021-06-30 13F CME GROUP COM 12572Q105 262,979 -8,794 -3.24 55,930 0.77 0.1602
2021-05-13 2021-03-31 13F CME GROUP COM 12572Q105 271,773 47,157 20.99 55,504 35.74 0.1752
2021-02-10 2020-12-31 13F CME GROUP COM 12572Q105 224,616 1,516 0.68 40,891 9.55 0.1229
2020-11-12 2020-09-30 13F CME GROUP COM 12572Q105 223,100 -224,600 -50.17 37,327 -48.70 0.1319
2020-08-12 2020-06-30 13F CME GROUP COM 12572Q105 447,700 -80,700 -15.27 72,769 -20.35 0.2673
2020-05-14 2020-03-31 13F CME GROUP COM 12572Q105 528,400 110,212 26.35 91,366 8.85 0.4010
2020-02-11 2019-12-31 13F CME GROUP COM 12572Q105 418,188 40,700 10.78 83,939 5.22 0.3060
2019-11-12 2019-09-30 13F CME GROUP COM 12572Q105 377,488 15,200 4.20 79,778 13.44 0.3372
2019-08-12 2019-06-30 13F CME GROUP COM 12572Q105 362,288 10,000 2.84 70,324 21.29 0.3023
2019-05-15 2019-03-31 13F CME GROUP COM 12572Q105 352,288 -4,365 -1.22 57,980 -13.58 0.2609
2019-02-13 2018-12-31 13F CME GROUP COM 12572Q105 356,653 66,600 22.96 67,094 35.90 0.3647
2018-11-13 2018-09-30 13F CME GROUP COM 12572Q105 290,053 7,116 2.52 49,370 6.45 0.2277
2018-08-13 2018-06-30 13F CME GROUP COM 12572Q105 282,937 900 0.32 46,379 1.67 0.2113
2018-05-09 2018-03-31 13F CME GROUP COM 12572Q105 282,037 10,188 3.75 45,617 14.89 0.2123
2018-02-12 2017-12-31 13F CME GROUP COM 12572Q105 271,849 -6,481 -2.33 39,704 5.14 0.1807
2017-10-25 2017-09-30 13F CME GROUP COM 12572Q105 278,330 -26,700 -8.75 37,764 -1.15 0.1745
2017-07-31 2017-06-30 13F CME GROUP COM 12572Q105 305,030 -99,361 -24.57 38,202 -20.48 0.1780
2017-04-25 2017-03-31 13F CME GROUP COM 12572Q105 404,391 223,600 123.68 48,042 130.37 0.2383
2017-02-13 2016-12-31 13F CME GROUP COM 12572Q105 180,791 18,700 11.54 20,854 23.09 0.1002
2016-11-09 2016-09-30 13F CME GROUP COM 12572Q105 162,091 55,991 52.77 16,942 63.94 0.0903
2016-08-12 2016-06-30 13F CME GROUP COM 12572Q105 106,100 43,500 69.49 10,334 71.89 0.0615
2016-05-12 2016-03-31 13F CME GROUP COM 12572Q105 62,600 -21,200 -25.30 6,012 -20.81 0.0440
2016-02-01 2015-12-31 13F CME GROUP COM 12572Q105 83,800 -7,100 -7.81 7,592 -9.94 0.0529
2015-11-12 2015-09-30 13F CME GROUP COM 12572Q105 90,900 -4,100 -4.32 8,430 -4.65 0.0671
2015-08-13 2015-06-30 13F CME GROUP COM 12572Q105 95,000 -21,300 -18.31 8,841 -19.74 0.0754
2015-05-11 2015-03-31 13F CME GROUP COM 12572Q105 116,300 19,800 20.52 11,015 28.76 0.0858
2015-02-12 2014-12-31 13F CME GROUP COM 12572Q105 96,500 8,700 9.91 8,555 21.87 0.0702
2014-11-14 2014-09-30 13F CME GROUP COM 12572Q105 87,800 -24,200 -21.61 7,020 -11.65 0.0573
2014-08-14 2014-06-30 13F CME GROUP COM 12572Q105 112,000 -24,700 -18.07 7,946 -21.46 0.0661
2014-05-14 2014-03-31 13F CME GROUP COM 12572Q105 136,700 49,700 57.13 10,117 48.21 0.0896
2014-02-06 2013-12-31 13F CME GROUP COM 12572Q105 87,000 -10,600 -10.86 6,826 -5.34 0.0645
2013-11-07 2013-09-30 13F/A-1 CME GROUP COM 12572Q105 97,600 -5,000 -4.87 7,211 -7.50 0.0766
2013-11-05 2013-09-30 13F CME GROUP COM 12572Q105 114,400 8,452
2013-08-08 2013-06-30 13F CME GROUP COM 12572Q105 102,600 102,600 7,796 0.0934
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.