Waste Management, Inc.
IT ˙ BIT ˙ US94106L1098
191,50 € ↑8,00 (4,36%)
2026-06-05
DEL PRIS
SecurityIT:1WM / Waste Management, Inc.
InstitutionCorundum Group, Inc.
Latest Disclosed Ownership5,950 shares
Latest Disclosed Value $ 1,367,250
Corundum Group, Inc. reports 11.32% increase in ownership of 1WM / Waste Management, Inc.

On April 20, 2026 - Corundum Group, Inc. filed a 13F-HR form disclosing ownership of 5,950 shares of Waste Management, Inc. (IT:1WM) valued at $1,165,605 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 12, 2026 disclosing 5,345 shares of Waste Management, Inc.. This represents a change in shares of 11.32% during the quarter. The current value of the position is $1,139,425 USD.

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)
2026-04-20 2026-03-31 13F WASTE MANAGEMENT INC DEL CS 94106L109 5,950 605 11.32 1,367 16.44 0.4570
2026-01-12 2025-12-31 13F WASTE MANAGEMENT INC DEL CS 94106L109 5,345 -391 -6.82 1,174 -7.27 0.3941
2025-10-24 2025-09-30 13F WASTE MANAGEMENT INC DEL CS 94106L109 5,736 -16 -0.28 1,267 -3.80 0.5204
2025-07-21 2025-06-30 13F WASTE MANAGEMENT INC DEL CS 94106L109 5,752 35 0.61 1,316 -0.53 0.5820
2025-04-23 2025-03-31 13F WASTE MANAGEMENT INC DEL CS 94106L109 5,717 -3,231 -36.11 1,324 -26.70 0.6348
2025-01-16 2024-12-31 13F WASTE MANAGEMENT INC DEL CS 94106L109 8,948 3,297 58.34 1,806 53.88 0.6742
2024-10-21 2024-09-30 13F WASTE MANAGEMENT INC DEL CS 94106L109 5,651 -3,242 -36.46 1,173 -38.17 0.5352
2024-07-17 2024-06-30 13F WASTE MANAGEMENT INC DEL CS 94106L109 8,893 3,276 58.32 1,897 58.48 0.7412
2024-04-15 2024-03-31 13F WASTE MANAGEMENT INC DEL CS 94106L109 5,617 -20 -0.35 1,197 18.63 0.5774
2024-01-24 2023-12-31 13F WASTE MANAGEMENT INC DEL CS 94106L109 5,637 312 5.86 1,010 24.41 0.5062
2023-10-17 2023-09-30 13F WASTE MANAGEMENT INC DEL CS 94106L109 5,325 -747 -12.30 812 -22.98 0.4612
2023-07-21 2023-06-30 13F WASTE MANAGEMENT INC DEL CS 94106L109 6,072 -3,599 -37.21 1,053 -33.27 0.5252
2023-04-24 2023-03-31 13F WASTE MANAGEMENT INC DEL CS 94106L109 9,671 3,235 50.26 1,578 157,700.00 0.7464
2023-01-12 2022-12-31 13F WASTE MANAGEMENT INC DEL CS 94106L109 6,436 345 5.66 1 -99.90 0.5703
2022-10-18 2022-09-30 13F WASTE MANAGEMENT INC DEL CS 94106L109 6,091 1,111 22.31 976 28.08 0.6140
2022-07-25 2022-06-30 13F WASTE MANAGEMENT INC DEL CS 94106L109 4,980 527 11.83 762 7.93 0.5148
2022-05-02 2022-03-31 13F WASTE MANAGEMENT INC DEL CS 94106L109 4,453 1,866 72.13 706 63.43 0.6562
2022-02-07 2021-12-31 13F WASTE MANAGEMENT INC DEL CS 94106L109 2,587 339 15.08 432 28.57 0.2813
2021-11-02 2021-09-30 13F WASTE MANAGEMENT INC DEL CS 94106L109 2,248 298 15.28 336 23.08 0.2491
2021-08-02 2021-06-30 13F WASTE MANAGEMENT INC DEL CS 94106L109 1,950 -35 -1.76 273 6.64 0.1790
2021-05-10 2021-03-31 13F WASTE MANAGEMENT INC DEL CS 94106L109 1,985 179 9.91 256 20.19 0.2001
2021-02-03 2020-12-31 13F WASTE MANAGEMENT INC DEL CS 94106L109 1,806 1,806 213 0.1775
2020-05-07 2020-03-31 13F/A-1 WASTE MANAGEMENT INC DEL CS 94106L109 0 -2,006 -100.00 0 -100.00
2020-01-28 2019-12-31 13F WASTE MANAGEMENT INC DEL CS 94106L109 2,006 93 4.86 229 4.09 0.2405
2019-11-01 2019-09-30 13F/A-1 WASTE MANAGEMENT INC DEL CS 94106L109 1,913 -3 -0.16 220 -0.45 0.2548
2019-08-02 2019-06-30 13F WASTE MANAGEMENT INC DEL CS 94106L109 1,916 1,916 221 0.2539
2019-05-08 2019-03-31 13F WASTE MANAGEMENT INC DEL CS 94106L109 0 -6,188 -100.00 0 -100.00
2019-02-19 2018-12-31 13F WASTE MANAGEMENT INC DEL CS 94106L109 6,188 6,188 551 0.5058
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.