3M Company
CL ˙ SNSE ˙ US88579Y1010
SecurityCL:MMM / 3M Company
InstitutionCalamos Wealth Management LLC
Latest Disclosed Ownership1,490 shares
Latest Disclosed Value $ 216,393
Calamos Wealth Management LLC reports 16.48% decrease in ownership of MMM / 3M Company

On May 4, 2026 - Calamos Wealth Management LLC filed a 13F-HR form disclosing ownership of 1,490 shares of 3M Company (CL:MMM) valued at $216,393 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 1,784 shares of 3M Company. This represents a change in shares of -16.48% 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.

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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 1,490 -294 -16.48 216 -24.21 0.0074
2026-01-29 2025-12-31 13F 3M COM 88579Y101 1,784 -303 -14.52 286 -11.76 0.0098
2025-10-20 2025-09-30 13F 3M COM 88579Y101 2,087 2,087 324 0.0117
2025-04-29 2025-03-31 13F 3M COM 88579Y101 0 -2,194 -100.00 0 -100.00
2025-01-24 2024-12-31 13F 3M COM 88579Y101 2,194 103 4.93 283 -0.70 0.0142
2024-11-12 2024-09-30 13F 3M COM 88579Y101 2,091 0 0.00 286 33.80 0.0146
2024-07-25 2024-06-30 13F 3M COM 88579Y101 2,091 47 2.30 214 -1.39 0.0114
2024-05-08 2024-03-31 13F 3M COM 88579Y101 2,044 -267 -11.55 217 -14.29 0.0122
2024-01-31 2023-12-31 13F 3M COM 88579Y101 2,311 -925 -28.58 253 -16.56 0.0159
2023-10-26 2023-09-30 13F 3M COM 88579Y101 3,236 -86 -2.59 303 -9.04 0.0230
2023-07-28 2023-06-30 13F 3M COM 88579Y101 3,322 0 0.00 332 -4.87 0.0244
2023-05-04 2023-03-31 13F 3M COM 88579Y101 3,322 -29 -0.87 349 -12.97 0.0274
2023-01-26 2022-12-31 13F 3M COM 88579Y101 3,351 -7,776 -69.88 402 -67.40 0.0312
2022-10-24 2022-09-30 13F 3M COM 88579Y101 11,127 -100 -0.89 1,230 -15.35 0.1055
2022-08-01 2022-06-30 13F 3M COM 88579Y101 11,227 -150 -1.32 1,453 -14.23 0.1289
2022-05-03 2022-03-31 13F 3M COM 88579Y101 11,377 58 0.51 1,694 -15.76 0.1266
2022-02-01 2021-12-31 13F 3M COM 88579Y101 11,319 195 1.75 2,011 3.08 0.1470
2021-10-26 2021-09-30 13F 3M COM 88579Y101 11,124 0 0.00 1,951 -11.72 0.1576
2021-07-22 2021-06-30 13F 3M COM 88579Y101 11,124 1,292 13.14 2,210 16.68 0.1721
2021-04-12 2021-03-31 13F 3M COM 88579Y101 9,832 138 1.42 1,894 11.81 0.1561
2021-01-27 2020-12-31 13F 3M COM 88579Y101 9,694 0 0.00 1,694 9.08 0.1547
2020-10-26 2020-09-30 13F 3M COM 88579Y101 9,694 150 1.57 1,553 4.30 0.1777
2020-07-27 2020-06-30 13F 3M COM 88579Y101 9,544 0 0.00 1,489 14.27 0.1858
2020-04-28 2020-03-31 13F 3M COM 88579Y101 9,544 0 0.00 1,303 -22.62 0.1987
2020-01-15 2019-12-31 13F 3M COMMON STOCK 88579Y101 9,544 0 0.00 1,684 7.33 0.1984
2019-10-21 2019-09-30 13F 3M COMMON STOCK 88579Y101 9,544 -2,927 -23.47 1,569 -27.43 0.2097
2019-08-07 2019-06-30 13F 3M COMMON STOCK 88579Y101 12,471 -80 -0.64 2,162 -17.10 0.2917
2019-04-12 2019-03-31 13F 3M COMMON STOCK 88579Y101 12,551 -94 -0.74 2,608 8.26 0.3725
2019-01-24 2018-12-31 13F 3M COMMON STOCK 88579Y101 12,645 62 0.49 2,409 -9.13 0.3627
2018-10-22 2018-09-30 13F 3M COMMON STOCK 88579Y101 12,583 -127 -1.00 2,651 6.04 0.3303
2018-07-17 2018-06-30 13F 3M COMMON STOCK 88579Y101 12,710 10,964 627.95 2,500 551.04 0.3116
2018-04-13 2018-03-31 13F 3M COMMON STOCK 88579Y101 1,746 -188 -9.72 384 -15.60 0.0481
2018-02-13 2017-12-31 13F 3M COMMON STOCK 88579Y101 1,934 300 18.36 455 32.65 0.0590
2017-10-25 2017-09-30 13F 3M COMMON STOCK 88579Y101 1,634 427 35.38 343 36.65 0.0475
2017-08-09 2017-06-30 13F 3M COMMON STOCK 88579Y101 1,207 1,207 251 0.0355
2017-02-06 2016-12-31 13F 3M COMMON STOCK 88579Y101 0 0 0 0.0000
2016-11-14 2016-09-30 13F 3M COMMON STOCK 88579Y101 0 -6,255 -100.00 0 -100.00
2016-07-26 2016-06-30 13F 3M COMMON STOCK 88579Y101 6,255 -358 -5.41 1,095 -0.64 0.1935
2016-04-25 2016-03-31 13F 3M COMMON STOCK 88579Y101 6,613 11 0.17 1,102 10.75 0.2121
2016-02-05 2015-12-31 13F 3M COMMON STOCK 88579Y101 6,602 6,602 995 0.1982
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.