Granahan Investment Management, LLC / CWST
Granahan Investment Management, LLC’s Casella Waste Sys Inc Position
Does Granahan Investment Management, LLC own Casella Waste Sys Inc (CWST)? Yes — 250.3K shares worth $20M (+0.96% of its 13F portfolio) as of Q1 2026, down from 257.7K shares the prior filed quarter.
Position Value
$20M
Q1 2026
Shares
250.3K
% of Portfolio
+0.96%
Quarters Held
30
currently held
Position History CWST
Reported value by quarter
| Quarter | Shares | Value | % of Portfolio |
|---|---|---|---|
| Q1 2026 | 250.3K | $20M | +0.96% |
| Q4 2025 | 257.7K | $25M | +1.08% |
| Q3 2025 | 314.3K | $30M | +1.22% |
| Q2 2025 | 312.4K | $36M | +1.47% |
| Q1 2025 | 343.0K | $38M | +1.90% |
| Q4 2024 | 372.3K | $39M | +1.64% |
| Q3 2024 | 391.4K | $39M | +1.53% |
| Q2 2024 | 263.7K | $26M | +1.05% |
| Q1 2024 | 335.0K | $33M | +1.16% |
| Q4 2023 | 346.3K | $30M | +0.98% |
| Q3 2023 | 331.8K | $25M | +0.90% |
| Q2 2023 | 284.5K | $26M | +0.79% |
| Q1 2023 | 307.1K | $25M | +0.77% |
| Q4 2022 | 256.5K | $20M | +0.62% |
| Q3 2022 | 294.8K | $23M | +0.74% |
| Q2 2022 | 207.4K | $15M | +0.51% |
| Q1 2022 | 171.7K | $15M | +0.37% |
| Q4 2021 | 109.3K | $9M | +0.19% |
| Q3 2021 | 172.7K | $13M | +0.25% |
| Q2 2021 | 196.1K | $12M | +0.23% |
| Q1 2021 | 132.2K | $8M | +0.18% |
| Q4 2020 | 136.9K | $8M | +0.19% |
| Q3 2020 | 132.8K | $7M | +0.25% |
| Q2 2020 | 140.5K | $7M | +0.26% |
| Q1 2020 | 88.1K | $3M | +0.19% |
| Q4 2019 | 232.5K | $11M | +0.49% |
| Q3 2019 | 214.7K | $9M | +0.51% |
| Q2 2019 | 249.3K | $10M | +0.49% |
| Q1 2019 | 261.1K | $9M | +0.50% |
| Q4 2018 | 282.7K | $8M | +0.57% |
Common-stock position only; options are excluded. Quarters where the fund filed no 13F or reported no position are absent. See Granahan Investment Management, LLC’s full portfolio or all institutional holders of CWST.