CME Group Inc.
BG ˙ BUL ˙ US12572Q1058
SecurityBG:MX4A / CME Group Inc.
InstitutionParnassus Investments /ca
Latest Disclosed Ownership353,158 shares
Latest Disclosed Value $ 104,305,215
Parnassus Investments /ca reports 0.04% decrease in ownership of MX4A / CME Group Inc.

On May 12, 2026 - Parnassus Investments /ca filed a 13F-HR form disclosing ownership of 353,158 shares of CME Group Inc. (BG:MX4A) valued at $104,305,215 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 353,308 shares of CME Group Inc.. This represents a change in shares of -0.04% 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)
2026-05-12 2026-03-31 13F CME GROUP COM 12572Q105 353,158 -150 -0.04 104,305 8.11 0.3055
2026-02-12 2025-12-31 13F CME GROUP COM 12572Q105 353,308 6,564 1.89 96,481 2.98 0.2502
2025-10-24 2025-09-30 13F CME GROUP COM 12572Q105 346,744 32,606 10.38 93,687 8.20 0.2165
2025-08-06 2025-06-30 13F CME GROUP COM 12572Q105 314,138 -1,841 -0.58 86,583 3.29 0.1997
2025-05-15 2025-03-31 13F CME GROUP COM 12572Q105 315,979 -50,848 -13.86 83,826 -1.60 0.2014
2025-02-10 2024-12-31 13F CME GROUP COM 12572Q105 366,827 -1,890,660 -83.75 85,188 -82.90 0.1892
2024-11-08 2024-09-30 13F CME GROUP COM 12572Q105 2,257,487 -2,825,125 -55.58 498,115 -50.15 1.0567
2024-08-06 2024-06-30 13F CME GROUP COM 12572Q105 5,082,612 -363,083 -6.67 999,242 -14.77 2.1763
2024-05-09 2024-03-31 13F CME GROUP COM 12572Q105 5,445,695 -221,689 -3.91 1,172,404 -1.77 2.5056
2024-02-12 2023-12-31 13F CME GROUP COM 12572Q105 5,667,384 23,583 0.42 1,193,551 5.62 2.6503
2023-11-08 2023-09-30 13F CME GROUP COM 12572Q105 5,643,801 -32,879 -0.58 1,130,002 7.43 2.7636
2023-07-31 2023-06-30 13F CME GROUP COM 12572Q105 5,676,680 516,799 10.02 1,051,832 6.44 2.4420
2023-05-01 2023-03-31 13F CME GROUP COM 12572Q105 5,159,881 916,334 21.59 988,220 38.48 2.4492
2023-01-30 2022-12-31 13F CME GROUP COM 12572Q105 4,243,547 -1,946,952 -31.45 713,595 -34.92 1.7728
2022-11-14 2022-09-30 13F CME GROUP COM 12572Q105 6,190,499 23,339 0.38 1,096,523 -13.14 2.8540
2022-08-05 2022-06-30 13F CME GROUP COM 12572Q105 6,167,160 187,304 3.13 1,262,418 -11.25 3.0151
2022-05-11 2022-03-31 13F CME GROUP COM 12572Q105 5,979,856 -548,913 -8.41 1,422,369 -4.64 2.8818
2022-02-11 2021-12-31 13F CME Group COMMON STOCK 12572Q105 6,528,769 -568,629 -8.01 1,491,563 8.68 2.8621
2021-11-16 2021-09-30 13F/A-1 CME Group COMMON STOCK 12572Q105 7,097,398 951,681 15.49 1,372,495 5.01 2.8942
2021-11-12 2021-09-30 13F CME Group COMMON STOCK 12572Q105 7,046,107 900,390 1,362,576 2.8975
2021-08-05 2021-06-30 13F CME Group COMMON STOCK 12572Q105 6,145,717 541,757 9.67 1,307,071 14.20 2.8462
2021-05-06 2021-03-31 13F CME Group COMMON STOCK 12572Q105 5,603,960 899,549 19.12 1,144,496 33.63 2.7780
2021-02-10 2020-12-31 13F CME Group COMMON STOCK 12572Q105 4,704,411 61,595 1.33 856,438 10.25 2.3234
2020-11-13 2020-09-30 13F CME Group COMMON STOCK 12572Q105 4,642,816 845,927 22.28 776,790 25.87 2.4099
2020-08-12 2020-06-30 13F CME Group COMMON STOCK 12572Q105 3,796,889 -106,247 -2.72 617,146 -8.56 2.1355
2020-05-01 2020-03-31 13F CME Group COMMON STOCK 12572Q105 3,903,136 346,212 9.73 674,891 -5.47 2.8080
2020-02-13 2019-12-31 13F CME Group COMMON STOCK 12572Q105 3,556,924 711,558 25.01 713,946 18.73 2.4035
2019-10-29 2019-09-30 13F CME Group COMMON STOCK 12572Q105 2,845,366 41,326 1.47 601,340 10.48 2.1795
2019-08-08 2019-06-30 13F CME Group COMMON STOCK 12572Q105 2,804,040 2,804,040 544,292 2.0600
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.