CME Group Inc.
BG ˙ BUL ˙ US12572Q1058
SecurityBG:MX4A / CME Group Inc.
InstitutionPortside Wealth Group, LLC
Latest Disclosed Ownership8,665 shares
Latest Disclosed Value $ 2,559,208
Portside Wealth Group, LLC reports 36.20% increase in ownership of MX4A / CME Group Inc.

On May 12, 2026 - Portside Wealth Group, LLC filed a 13F-HR form disclosing ownership of 8,665 shares of CME Group Inc. (BG:MX4A) valued at $2,559,208 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 21, 2026 disclosing 6,362 shares of CME Group Inc.. This represents a change in shares of 36.20% 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 8,665 2,303 36.20 2,559 47.32 0.2356
2026-01-21 2025-12-31 13F CME GROUP COM 12572Q105 6,362 1,264 24.79 1,737 26.14 0.2336
2025-11-05 2025-09-30 13F CME GROUP COM 12572Q105 5,098 608 13.54 1,377 11.32 0.1898
2025-08-11 2025-06-30 13F CME GROUP COM 12572Q105 4,490 216 5.05 1,238 9.18 0.1833
2025-04-14 2025-03-31 13F/A-1 CME GROUP COM 12572Q105 4,274 396 10.21 1,134 25.89 0.1849
2025-04-10 2025-03-31 13F CME GROUP COM 12572Q105 3,878 0 901 0.1349
2025-04-14 2024-12-31 13F/A-1 CME GROUP COM 12572Q105 3,878 30 0.78 901 6.01 0.1489
2025-01-15 2024-12-31 13F CME GROUP COM 12572Q105 3,800 -48 838 0.1450
2024-10-31 2024-09-30 13F CME GROUP COM 12572Q105 3,848 1,368 55.16 849 74.33 0.1450
2024-07-18 2024-06-30 13F CME GROUP COM 12572Q105 2,480 2,480 488 0.0930
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.