3M Company
MX ˙ BMV ˙ US88579Y1010
SecurityMX:MMM / 3M Company
InstitutionCornerstone Advisory, LLC
Latest Disclosed Ownership2,008 shares
Latest Disclosed Value $ 291,679
Cornerstone Advisory, LLC reports 5.85% increase in ownership of MMM / 3M Company

On May 4, 2026 - Cornerstone Advisory, LLC filed a 13F-HR form disclosing ownership of 2,008 shares of 3M Company (MX:MMM) valued at $291,679 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 28, 2026 disclosing 1,897 shares of 3M Company. This represents a change in shares of 5.85% 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)
2026-05-04 2026-03-31 13F 3M COM 88579Y101 2,008 111 5.85 292 -3.96 0.0276
2026-01-28 2025-12-31 13F 3M COM 88579Y101 1,897 6 0.32 304 3.41 0.0290
2025-11-07 2025-09-30 13F 3M COM 88579Y101 1,891 -508 -21.18 293 -19.73 0.0288
2025-07-30 2025-06-30 13F 3M COM 88579Y101 2,399 -390 -13.98 365 -4.95 0.0392
2025-05-07 2025-03-31 13F 3M COM 88579Y101 2,789 -315 -10.15 385 -16.70 0.0449
2025-02-18 2024-12-31 13F 3M COM 88579Y101 3,104 7 0.23 461 8.98 0.0524
2024-11-12 2024-09-30 13F 3M COM 88579Y101 3,097 1 0.03 423 33.86 0.0557
2024-08-14 2024-06-30 13F 3M COM 88579Y101 3,096 36 1.18 316 -2.47 0.0445
2024-05-08 2024-03-31 13F 3M COM 88579Y101 3,060 -871 -22.16 325 -24.48 0.0463
2024-02-13 2023-12-31 13F 3M COM 88579Y101 3,931 -260 -6.20 430 9.44 0.0670
2023-11-14 2023-09-30 13F 3M COM 88579Y101 4,191 61 1.48 392 -5.08 0.0686
2023-07-20 2023-06-30 13F 3M COM 88579Y101 4,130 -881 -17.58 413 -21.48 0.0726
2023-05-04 2023-03-31 13F 3M COM 88579Y101 5,011 -219 -4.19 527 -16.11 0.0949
2023-02-13 2022-12-31 13F 3M COM 88579Y101 5,230 58 1.12 627 9.62 0.1236
2022-10-26 2022-09-30 13F 3M COM 88579Y101 5,172 -133 -2.51 572 -16.74 0.1277
2022-08-02 2022-06-30 13F 3M COM 88579Y101 5,305 -1,794 -25.27 687 -35.00 0.1572
2022-05-20 2022-03-31 13F 3M COM 88579Y101 7,099 -1,840 -20.58 1,057 -33.44 0.1612
2022-02-23 2021-12-31 13F 3M COM 88579Y101 8,939 -203 -2.22 1,588 -1.00 0.2283
2021-11-16 2021-09-30 13F 3M COM 88579Y101 9,142 -994 -9.81 1,604 -20.32 0.2656
2021-08-16 2021-06-30 13F 3M COM 88579Y101 10,136 324 3.30 2,013 6.51 0.3391
2021-05-13 2021-03-31 13F 3M COM 88579Y101 9,812 -1,115 -10.20 1,890 -1.05 0.3577
2021-05-11 2020-12-31 13F 3M COM 88579Y101 10,927 105 0.97 1,910 10.21 0.3866
2020-11-12 2020-09-30 13F 3M COM 88579Y101 10,822 3,596 49.76 1,733 53.63 0.4043
2020-08-10 2020-06-30 13F 3M COM 88579Y101 7,226 3,155 77.50 1,128 102.88 0.2943
2020-05-11 2020-03-31 13F 3M COM 88579Y101 4,071 129 3.27 556 -20.00 0.1690
2020-02-12 2019-12-31 13F 3M COM 88579Y101 3,942 -406 -9.34 695 -2.80 0.1439
2019-11-12 2019-09-30 13F 3M COM 88579Y101 4,348 -16 -0.37 715 -5.42 0.1543
2019-08-08 2019-06-30 13F 3M COM 88579Y101 4,364 -223 -4.86 756 -20.67 0.1639
2019-05-08 2019-03-31 13F 3M COM 88579Y101 4,587 27 0.59 953 9.67 0.2097
2019-02-12 2018-12-31 13F 3M COM 88579Y101 4,560 0 0.00 869 -9.57 0.2280
2018-11-13 2018-09-30 13F 3M COM 88579Y101 4,560 2 0.04 961 7.13 0.2849
2018-08-09 2018-06-30 13F 3M COM 88579Y101 4,558 30 0.66 897 -9.76 0.2952
2018-05-10 2018-03-31 13F 3M COM 88579Y101 4,528 -26 -0.57 994 -7.28 0.3580
2018-02-09 2017-12-31 13F 3M COM 88579Y101 4,554 31 0.69 1,072 12.96 0.3674
2017-11-14 2017-09-30 13F 3M COM 88579Y101 4,523 -20 -0.44 949 0.32 0.3211
2017-08-08 2017-06-30 13F 3M COM 88579Y101 4,543 554 13.89 946 23.98 0.3166
2017-05-15 2017-03-31 13F 3M COM 88579Y101 3,989 -478 -10.70 763 -4.39 0.3852
2017-02-13 2016-12-31 13F 3M COM 88579Y101 4,467 490 12.32 798 13.84 0.5988
2016-11-10 2016-09-30 13F 3M COM 88579Y101 3,977 6 0.15 701 0.86 0.5756
2016-08-10 2016-06-30 13F 3M COM 88579Y101 3,971 -16 -0.40 695 4.67 0.5842
2016-05-16 2016-03-31 13F 3M COM 88579Y101 3,987 6 0.15 664 10.67 0.5673
2016-03-03 2015-12-31 13F 3M COM 88579Y101 3,981 3,981 600 0.5167
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.