Brown Brothers Harriman & Co / COST
Brown Brothers Harriman & Co’s Costco Wholesale Corporation Position
Does Brown Brothers Harriman & Co own Costco Wholesale Corporation (COST)? Yes — 234.0K shares worth $233M (+1.25% of its 13F portfolio) as of Q1 2026, up from 231.8K shares the prior filed quarter.
Position Value
$233M
Q1 2026
Shares
234.0K
% of Portfolio
+1.25%
Quarters Held
30
currently held
Position History COST
Reported value by quarter
| Quarter | Shares | Value | % of Portfolio |
|---|---|---|---|
| Q1 2026 | 234.0K | $233M | +1.25% |
| Q4 2025 | 231.8K | $200M | +1.09% |
| Q3 2025 | 235.5K | $218M | +1.33% |
| Q2 2025 | 242.1K | $240M | +1.54% |
| Q1 2025 | 341.8K | $323M | +2.26% |
| Q4 2024 | 416.4K | $382M | +2.68% |
| Q3 2024 | 428.2K | $380M | +2.58% |
| Q2 2024 | 433.5K | $368M | +2.76% |
| Q1 2024 | 437.8K | $321M | +2.46% |
| Q4 2023 | 445.5K | $294M | +2.45% |
| Q3 2023 | 575.2K | $325M | +2.87% |
| Q2 2023 | 584.9K | $315M | +2.53% |
| Q1 2023 | 598.2K | $297M | +2.49% |
| Q4 2022 | 607.6K | $277M | +2.43% |
| Q3 2022 | 619.1K | $292M | +2.71% |
| Q2 2022 | 661.4K | $317M | +2.71% |
| Q1 2022 | 810.7K | $467M | +3.30% |
| Q4 2021 | 795.8K | $452M | +2.54% |
| Q3 2021 | 803.4K | $361M | +2.13% |
| Q2 2021 | 819.5K | $324M | +1.91% |
| Q1 2021 | 835.6K | $295M | +1.88% |
| Q4 2020 | 632.3K | $238M | +1.59% |
| Q3 2020 | 660.0K | $234M | +1.68% |
| Q2 2020 | 702.2K | $213M | +1.60% |
| Q1 2020 | 731.7K | $209M | +1.70% |
| Q4 2019 | 615.7K | $181M | +1.16% |
| Q3 2019 | 537.3K | $155M | +1.03% |
| Q2 2019 | 554.5K | $147M | +0.97% |
| Q1 2019 | 569.0K | $138M | +0.95% |
| Q4 2018 | 54.9K | $11M | +0.08% |
Common-stock position only; options are excluded. Quarters where the fund filed no 13F or reported no position are absent. See Brown Brothers Harriman & Co’s full portfolio or all institutional holders of COST.