Greenbrier Partners Capital Management, LLC: COSTCO WHOLESALE (COST): Quarterly 13F Position History
As of Q1 2026, Greenbrier Partners Capital Management, LLC reported 222,472 shares of COSTCO WHOLESALE (COST), worth $221.7M and representing 17.1% of its 13F equity book. Quarter-over-quarter share count change: 1,587 (-0.7%) . The position first appeared in Q2 2016 and has been disclosed across 40 13F-HR filings in Pactolio's tracked window.
- 222,472Shares Held (Latest Filing)
- $221.7MReported Market Value (Latest Filing)
- 17.1%Portfolio Weight (% of 13F Equity Book)
- 1,587Quarter-over-Quarter Share Change
- +$28.5MQuarter-over-Quarter Value Change
- 250,000Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 40 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q1 2026 | 222,472 | 1,587 | -0.7% | $221.7M | 17.1% | $996.4 |
| Q4 2025 | 224,059 | 293 | -0.1% | $193.2M | 13.0% | $862.3 |
| Q3 2025 | 224,352 | 0 | — | $207.7M | 14.1% | $925.6 |
| Q2 2025 | 224,352 | 0 | — | $222.1M | 16.3% | $989.9 |
| Q1 2025 | 224,352 | 0 | — | $212.2M | 16.6% | $945.8 |
| Q4 2024 | 224,352 | 0 | — | $205.6M | 14.9% | $916.3 |
| Q3 2024 | 224,352 | 295 | -0.1% | $209.3M | 15.8% | $932.9 |
| Q2 2024 | 224,647 | 0 | — | $190.9M | 15.7% | $850.0 |
| Q1 2024 | 224,647 | 1,202 | -0.5% | $164.6M | 15.2% | $732.6 |
| Q4 2023 | 225,849 | 661 | -0.3% | $149.1M | 15.1% | $660.1 |
| Q3 2023 | 226,510 | 0 | — | $128.0M | 14.4% | $565.0 |
| Q2 2023 | 226,510 | 0 | — | $121.9M | 13.3% | $538.4 |
| Q1 2023 | 226,510 | 0 | — | $112.5M | 13.8% | $496.9 |
| Q4 2022 | 226,510 | 16,122 | -6.6% | $103.4M | 14.9% | $456.5 |
| Q3 2022 | 242,632 | 0 | — | $114.6M | 14.7% | $472.3 |
| Q2 2022 | 242,632 | 0 | — | $116.3M | 14.3% | $479.3 |
| Q1 2022 | 242,632 | 0 | — | $139.7M | 13.2% | $575.9 |
| Q4 2021 | 242,632 | 0 | — | $137.7M | 11.9% | $567.7 |
| Q3 2021 | 242,632 | 0 | — | $109.0M | 10.0% | $449.4 |
| Q2 2021 | 242,632 | 0 | — | $96.0M | 8.7% | $395.7 |
| Q1 2021 | 242,632 | 0 | — | $85.5M | 8.7% | $352.5 |
| Q4 2020 | 242,632 | 0 | — | $91.4M | 9.7% | $376.8 |
| Q3 2020 | 242,632 | 0 | — | $86.1M | 10.2% | $355.0 |
| Q2 2020 | 242,632 | 0 | — | $73.6M | 10.1% | $303.2 |
| Q1 2020 | 242,632 | 0 | — | $69.2M | 12.4% | $285.1 |
| Q4 2019 | 242,632 | 5,900 | -2.4% | $71.3M | 10.9% | $293.9 |
| Q3 2019 | 248,532 | 1,468 | -0.6% | $71.6M | 11.8% | $288.1 |
| Q2 2019 | 250,000 | 0 | — | $66.1M | 11.1% | $264.3 |
| Q1 2019 | 250,000 | 0 | — | $60.5M | 10.8% | $242.1 |
| Q4 2018 | 250,000 | 0 | — | $50.9M | 10.5% | $203.7 |
| Q3 2018 | 250,000 | 0 | — | $58.7M | 9.9% | $234.9 |
| Q2 2018 | 250,000 | +25,000 | +11.1% | $52.2M | 9.4% | $209.0 |
| Q1 2018 | 225,000 | 0 | — | $42.4M | 8.0% | $188.4 |
| Q4 2017 | 225,000 | 0 | — | $41.9M | 7.5% | $186.1 |
| Q3 2017 | 225,000 | 0 | — | $37.0M | 7.5% | $164.3 |
| Q2 2017 | 225,000 | 0 | — | $36.0M | 7.6% | $159.9 |
| Q1 2017 | 225,000 | 0 | — | $37.7M | 8.4% | $167.7 |
| Q4 2016 | 225,000 | 0 | — | $36.0M | 9.1% | $160.1 |
| Q3 2016 | 225,000 | 0 | — | $34.3M | 8.8% | $152.5 |
| Q2 2016 | 225,000 | — | — | $35.3M | 9.7% | $157.0 |
Methodology & FAQ
How This Position History Is Sourced
Each row is one SEC Form 13F-HR filing disclosing this position. Share count, market value, and reported quarter are taken verbatim from the filing; portfolio weight is recomputed against the same filing's total reported equity book. Implied price-per-share is market value divided by shares — a quarter-end mark, not the manager's cost basis. See the full methodology document for the normalization rules.
When did Greenbrier Partners Capital Management, LLC first disclose a COST position in 13F-HR filings?
Greenbrier Partners Capital Management, LLC first reported COSTCO WHOLESALE (COST) on its 13F-HR filing for the period ending 2016-06-30 (Q2 2016). The position has appeared on 40 reported quarters within Pactolio's tracked window.
What was Greenbrier Partners Capital Management, LLC's most recent quarter-over-quarter share-count change in COST?
Between Q4 2025 and Q1 2026, Greenbrier Partners Capital Management, LLC reduced its COST position by 1,587 shares (-0.7%), leaving 222,472 shares at a market value of $221.7M.
Does the implied price-per-share represent Greenbrier Partners Capital Management, LLC's cost basis in COST?
No. The implied price-per-share column is the 13F-HR reported market value divided by reported share count on the filing date (end of quarter). It is a quarter-end mark, not a cost basis or transaction price. Use it as a sanity check on the value column, not as an indicator of the manager's entry or exit price.