CME Group Inc.
BG ˙ BUL ˙ US12572Q1058
SecurityBG:MX4A / CME Group Inc.
InstitutionWellington Management Group Llp
Latest Disclosed Ownership1,457,799 shares
Latest Disclosed Value $ 430,560,935
Wellington Management Group Llp reports 70.48% increase in ownership of MX4A / CME Group Inc.

On May 15, 2026 - Wellington Management Group Llp filed a 13F-HR form disclosing ownership of 1,457,799 shares of CME Group Inc. (BG:MX4A) valued at $430,560,935 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 855,093 shares of CME Group Inc.. This represents a change in shares of 70.48% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-15 2026-03-31 13F CME GROUP COM 12572Q105 1,457,799 602,706 70.48 430,561 84.39 0.0114
2026-02-17 2025-12-31 13F CME GROUP COM 12572Q105 855,093 -863,153 -50.23 233,509 -49.70 0.0409
2025-11-14 2025-09-30 13F CME GROUP COM 12572Q105 1,718,246 -46,204 -2.62 464,253 -4.54 0.0813
2025-08-14 2025-06-30 13F CME GROUP COM 12572Q105 1,764,450 -889,507 -33.52 486,318 -30.93 0.0883
2025-05-13 2025-03-31 13F CME GROUP COM 12572Q105 2,653,957 2,089,935 370.54 704,068 437.53 0.1354
2025-02-12 2024-12-31 13F CME GROUP COM 12572Q105 564,022 377,414 202.25 130,983 218.11 0.0240
2024-11-14 2024-09-30 13F CME GROUP COM 12572Q105 186,608 138,412 287.19 41,175 334.56 0.0072
2024-08-14 2024-06-30 13F CME GROUP COM 12572Q105 48,196 18,613 62.92 9,475 48.79 0.0017
2024-05-15 2024-03-31 13F CME GROUP COM 12572Q105 29,583 733 2.54 6,369 4.82 0.0011
2024-02-12 2023-12-31 13F CME GROUP COM 12572Q105 28,850 -1,541 -5.07 6,076 -0.15 0.0011
2023-11-14 2023-09-30 13F CME GROUP COM 12572Q105 30,391 -38,359 -55.79 6,085 -52.24 0.0012
2023-08-14 2023-06-30 13F CME GROUP COM 12572Q105 68,750 13,592 24.64 12,739 20.59 0.0024
2023-05-12 2023-03-31 13F CME GROUP COM 12572Q105 55,158 -464,432 -89.38 10,564 -87.91 0.0021
2023-02-13 2022-12-31 13F CME GROUP COM 12572Q105 519,590 -250,619 -32.54 87,374 -35.96 0.0175
2022-11-14 2022-09-30 13F CME GROUP COM 12572Q105 770,209 -650,953 -45.80 136,427 -53.10 0.0291
2022-08-15 2022-06-30 13F CME GROUP COM 12572Q105 1,421,162 1,368,917 2,620.19 290,911 2,240.96 0.0586
2022-05-16 2022-03-31 13F CME GROUP COM 12572Q105 52,245 -3,166 -5.71 12,427 -1.83 0.0021
2022-02-11 2021-12-31 13F CME GROUP COM 12572Q105 55,411 -1,145 -2.02 12,659 15.76 0.0020
2021-11-15 2021-09-30 13F CME GROUP COM 12572Q105 56,556 -1,494,740 -96.35 10,936 -96.69 0.0019
2021-08-16 2021-06-30 13F CME GROUP COM 12572Q105 1,551,296 19,041 1.24 329,931 5.43 0.0549
2021-05-17 2021-03-31 13F CME GROUP COM 12572Q105 1,532,255 1,499,346 4,556.04 312,932 5,122.50 0.0551
2021-02-12 2020-12-31 13F CME GROUP COM 12572Q105 32,909 3,522 11.98 5,992 21.89 0.0011
2020-11-16 2020-09-30 13F CME GROUP COM 12572Q105 29,387 -52,923 -64.30 4,916 -63.25 0.0010
2020-08-14 2020-06-30 13F CME GROUP COM 12572Q105 82,310 -2,043,999 -96.13 13,378 -96.36 0.0030
2020-05-14 2020-03-31 13F CME GROUP COM 12572Q105 2,126,309 2,092,291 6,150.54 367,659 5,284.58 0.0973
2020-02-11 2019-12-31 13F CME GROUP COM 12572Q105 34,018 -10,561 -23.69 6,828 -27.52 0.0014
2019-11-13 2019-09-30 13F CME GROUP COM 12572Q105 44,579 41,787 1,496.67 9,421 1,638.19 0.0021
2019-08-14 2019-06-30 13F CME GROUP COM 12572Q105 2,792 -4,588 -62.17 542 -55.39 0.0001
2019-05-15 2019-03-31 13F CME GROUP COM CL A 12572Q105 7,380 -45,376 -86.01 1,215 -87.74 0.0003
2019-02-14 2018-12-31 13F CME GROUP COM CL A 12572Q105 52,756 28,859 120.76 9,907 143.53 0.0025
2018-11-14 2018-09-30 13F CME GROUP COM CL A 12572Q105 23,897 -2,821 -10.56 4,068 -7.12 0.0009
2018-08-14 2018-06-30 13F CME GROUP COM CL A 12572Q105 26,718 -111,442 -80.66 4,380 -80.40 0.0010
2018-05-15 2018-03-31 13F CME GROUP COM CL A 12572Q105 138,160 134,720 3,916.28 22,346 4,351.39 0.0051
2018-02-13 2017-12-31 13F CME GROUP COM CL A 12572Q105 3,440 -262 -7.08 502 -0.20 0.0001
2017-11-13 2017-09-30 13F CME GROUP COM CL A 12572Q105 3,702 3,702 503 0.0001
2017-08-14 2017-06-30 13F CME GROUP COM 12572Q105 0 -2,885 -100.00 0 -100.00
2017-05-11 2017-03-31 13F CME GROUP COM 12572Q105 2,885 -5,180 -64.23 343 -63.12 0.0001
2017-02-14 2016-12-31 13F CME GROUP COM 12572Q105 8,065 3,454 74.91 930 92.95 0.0002
2016-11-14 2016-09-30 13F CME GROUP COM 12572Q105 4,611 1,969 74.53 482 87.55 0.0001
2016-08-15 2016-06-30 13F CME GROUP COM 12572Q105 2,642 2,642 0.00 257 0.0001
2015-11-16 2015-09-30 13F CME GROUP COM 12572Q105 0 -3,631 -100.00 0 -100.00
2015-08-14 2015-06-30 13F CME GROUP COM 12572Q105 3,631 182 5.28 338 3.36 0.0001
2015-05-15 2015-03-31 13F CME GROUP COM 12572Q105 3,449 0 0.00 327 6.86 0.0001
2015-02-13 2014-12-31 13F CME GROUP COM 12572Q105 3,449 3,449 0.00 306 0.0001
2014-11-14 2014-09-30 13F CME GROUP COM 12572Q105 0 -3,296 -100.00 0 -100.00
2014-08-14 2014-06-30 13F CME GROUP COM 12572Q105 3,296 -6,581 -66.63 234 -67.99 0.0001
2014-05-15 2014-03-31 13F CMEGROUPINC COM 12572Q105 9,877 -139,625 -93.39 731 -93.77 0.0002
2014-02-14 2013-12-31 13F CME GROUP COM 12572Q105 149,502 144,911 3,156.41 11,730 3,360.18 0.0034
2013-11-14 2013-09-30 13F CME GROUP COM 12572Q105 4,591 -553 -10.75 339 -13.30 0.0001
2013-08-14 2013-06-30 13F CME GROUP COM 12572Q105 5,144 5,144 391 0.0001
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.