3M Company
MX ˙ BMV ˙ US88579Y1010
SecurityMX:MMM / 3M Company
InstitutionCornerstone Planning Group LLC
Latest Disclosed Ownership292 shares
Latest Disclosed Value $ 41,611
Cornerstone Planning Group LLC reports 32.13% increase in ownership of MMM / 3M Company

On May 6, 2026 - Cornerstone Planning Group LLC filed a 13F-HR form disclosing ownership of 292 shares of 3M Company (MX:MMM) valued at $41,611 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 221 shares of 3M Company. This represents a change in shares of 32.13% 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)
2026-05-06 2026-03-31 13F 3M CO COM Common Stock 88579Y101 292 71 32.13 42 20.59 0.0056
2026-02-02 2025-12-31 13F 3M CO COM Common Stock 88579Y101 221 7 3.27 34 -2.86 0.0054
2025-11-04 2025-09-30 13F 3M CO COM Common Stock 88579Y101 214 15 7.54 36 20.69 0.0057
2025-08-11 2025-06-30 13F 3M CO COM Common Stock 88579Y101 199 -49 -19.76 30 -12.12 0.0061
2025-04-30 2025-03-31 13F 3M CO COM Common Stock 88579Y101 248 119 92.25 34 73.68 0.0081
2025-01-29 2024-12-31 13F 3M CO COM Common Stock 88579Y101 129 5 4.03 20 18.75 0.0048
2024-11-05 2024-09-30 13F 3M CO COM Common Stock 88579Y101 124 -745 -85.73 16 -85.19 0.0042
2024-08-13 2024-06-30 13F 3M CO COM Common Stock 88579Y101 869 812 1,424.56 108 2,060.00 0.0310
2024-05-07 2024-03-31 13F 3M CO COM Common Stock 88579Y101 57 21 58.33 6 66.67 0.0017
2024-02-12 2023-12-31 13F 3M Common Stock 88579Y101 36 28 350.00 4 0.0013
2023-11-08 2023-09-30 13F 3M COMMON STOCK 88579Y101 8 8 1 0.0003
2023-08-15 2023-06-30 13F 3M COMPANY COM COM 88579Y101 0 -200 -100.00 0 -100.00
2023-02-14 2022-12-31 13F 3M COMPANY COM COM 88579Y101 200 200 24 0.0099
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.