Birch Hill Investment Advisors LLC / COST
Birch Hill Investment Advisors LLC’s Costco Wholesale Corporation Position
Does Birch Hill Investment Advisors LLC own Costco Wholesale Corporation (COST)? Yes — 35.0K shares worth $35M (+1.57% of its 13F portfolio) as of Q1 2026, down from 35.3K shares the prior filed quarter.
Position Value
$35M
Q1 2026
Shares
35.0K
% of Portfolio
+1.57%
Quarters Held
26
currently held
Position History COST
Reported value by quarter
| Quarter | Shares | Value | % of Portfolio |
|---|---|---|---|
| Q1 2026 | 35.0K | $35M | +1.57% |
| Q4 2025 | 35.3K | $30M | +1.27% |
| Q3 2025 | 35.5K | $33M | +1.39% |
| Q2 2025 | 35.7K | $35M | +1.57% |
| Q1 2025 | 36.7K | $35M | +1.64% |
| Q4 2024 | 39.1K | $36M | +1.66% |
| Q3 2024 | 40.1K | $36M | +1.67% |
| Q2 2024 | 42.6K | $36M | +1.75% |
| Q1 2024 | 44.2K | $32M | +1.58% |
| Q4 2023 | 47.6K | $31M | +1.67% |
| Q3 2023 | 49.4K | $28M | +1.66% |
| Q2 2023 | 49.6K | $27M | +1.53% |
| Q1 2023 | 50.4K | $25M | +1.56% |
| Q4 2022 | 52.6K | $24M | +1.53% |
| Q3 2022 | 53.3K | $25M | +1.70% |
| Q2 2022 | 58.6K | $28M | +1.75% |
| Q1 2022 | 61.6K | $35M | +1.89% |
| Q4 2021 | 68.9K | $39M | +1.94% |
| Q3 2021 | 70.2K | $32M | +1.70% |
| Q2 2021 | 71.5K | $28M | +1.52% |
| Q1 2021 | 73.5K | $26M | +1.48% |
| Q4 2020 | 95.0K | $36M | +2.14% |
| Q3 2020 | 101.4K | $36M | +2.39% |
| Q2 2020 | 102.8K | $31M | +2.29% |
| Q1 2020 | 111.8K | $32M | +2.79% |
| Q4 2019 | 114.8K | $34M | +2.23% |
Common-stock position only; options are excluded. Quarters where the fund filed no 13F or reported no position are absent. See Birch Hill Investment Advisors LLC’s full portfolio or all institutional holders of COST.