Casella Waste Systems, Inc.
US ˙ NasdaqGS ˙ US1474481041

SecurityCWST / Casella Waste Systems, Inc.
InstitutionDf Dent & Co Inc
Latest Disclosed Ownership327,585 shares
Latest Disclosed Value $ 25,990,607
Df Dent & Co Inc reports 4.63% decrease in ownership of CWST / Casella Waste Systems, Inc.

On May 15, 2026 - Df Dent & Co Inc filed a 13F-HR form disclosing ownership of 327,585 shares of Casella Waste Systems, Inc. (US:CWST) valued at $25,990,594 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 343,498 shares of Casella Waste Systems, Inc.. This represents a change in shares of -4.63% during the quarter. The current value of the position is $27,402,485 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-15 2026-03-31 13F CASELLA WASTE SYSTEMS INC CL A COM 147448104 327,585 -15,913 -4.63 25,991 -22.75 0.4978
2026-02-17 2025-12-31 13F CASELLA WASTE SYSTEMS INC CL A COM 147448104 343,498 66,893 24.18 33,642 28.19 0.4842
2025-11-14 2025-09-30 13F CASELLA WASTE SYSTEMS INC CL A COM 147448104 276,605 -23,494 -7.83 26,244 -24.21 0.3391
2025-08-14 2025-06-30 13F CASELLA WASTE SYSTEMS INC CL A COM 147448104 300,099 11,243 3.89 34,625 7.50 0.4394
2025-05-15 2025-03-31 13F CASELLA WASTE SYSTEMS INC CL A COM 147448104 288,856 51,315 21.60 32,210 28.15 0.4301
2025-02-12 2024-12-31 13F CASELLA WASTE SYSTEMS INC CL A COM 147448104 237,541 44,278 22.91 25,134 30.72 0.3182
2024-11-15 2024-09-30 13F CASELLA WASTE SYSTEMS INC CL A COM 147448104 193,263 41,336 27.21 19,228 27.55 0.2339
2024-08-14 2024-06-30 13F CASELLA WASTE SYSTEMS INC CL A COM 147448104 151,927 20,743 15.81 15,074 16.22 0.1949
2024-05-15 2024-03-31 13F CASELLA WASTE SYSTEMS INC CL A COM 147448104 131,184 48,000 57.70 12,970 82.47 0.1583
2024-02-14 2023-12-31 13F CASELLA WASTE SYSTEMS INC CL A COM 147448104 83,184 83,184 7,109 0.0942
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.