Parnassus Investments, LLC / COST
Parnassus Investments, LLC’s Costco Wholesale Corporation Position
Does Parnassus Investments, LLC own Costco Wholesale Corporation (COST)? Yes — 675.5K shares worth $673M (+1.97% of its 13F portfolio) as of Q1 2026, up from 662.4K shares the prior filed quarter.
Position Value
$673M
Q1 2026
Shares
675.5K
% of Portfolio
+1.97%
Quarters Held
28
currently held
Position History COST
Reported value by quarter
| Quarter | Shares | Value | % of Portfolio |
|---|---|---|---|
| Q1 2026 | 675.5K | $673M | +1.97% |
| Q4 2025 | 662.4K | $571M | +1.48% |
| Q3 2025 | 420.4K | $389M | +0.90% |
| Q2 2025 | 434.2K | $430M | +0.99% |
| Q1 2025 | 507.4K | $480M | +1.15% |
| Q4 2024 | 710.8K | $651M | +1.45% |
| Q3 2024 | 762.2K | $676M | +1.43% |
| Q2 2024 | 763.1K | $649M | +1.41% |
| Q1 2024 | 769.4K | $564M | +1.20% |
| Q4 2023 | 776.7K | $513M | +1.14% |
| Q3 2023 | 1.28M | $723M | +1.77% |
| Q2 2023 | 1.31M | $703M | +1.63% |
| Q1 2023 | 1.29M | $643M | +1.59% |
| Q4 2022 | 1.30M | $593M | +1.47% |
| Q3 2022 | 1.31M | $620M | +1.61% |
| Q2 2022 | 1.29M | $619M | +1.48% |
| Q1 2022 | 1.60M | $920M | +1.86% |
| Q4 2021 | 2.06M | $1.2B | +2.25% |
| Q3 2021 | 2.09M | $938M | +1.98% |
| Q2 2021 | 2.00M | $792M | +1.72% |
| Q1 2021 | 1.94M | $684M | +1.66% |
| Q4 2020 | 1.92M | $725M | +1.97% |
| Q3 2020 | 2.03M | $720M | +2.23% |
| Q2 2020 | 2.23M | $676M | +2.34% |
| Q1 2020 | 2.23M | $634M | +2.64% |
| Q4 2019 | 2.28M | $670M | +2.25% |
| Q3 2019 | 2.24M | $647M | +2.34% |
| Q2 2019 | 2.24M | $592M | +2.24% |
Common-stock position only; options are excluded. Quarters where the fund filed no 13F or reported no position are absent. See Parnassus Investments, LLC’s full portfolio or all institutional holders of COST.