Costco Wholesale Corp (COST) is 15.54% of the Greenbrier Partners Capital Management portfolio as of June 30, 2026, according to the 13F-HR filed with the SEC on August 12, 2026: 222K shares worth about $207.4M, the 3rd largest of 11 stock positions. Greenbrier Partners Capital Management trimmed the share count by 0% in 2026 Q2.
What did the 2026 Q2 filing report for COST?
As of June 30, 2026, from the 13F-HR filed August 12, 2026.
| Value | |
|---|---|
| Portfolio weight | 15.54% |
| Shares | 222K |
| Reported value | $207.4M |
| Rank in portfolio | 3rd of 11 |
| Largest holding | AAPL at 21.6% |
| Top three holdings | 52.68% of the book |
| Change this quarter | -0% shares |
How concentrated is Greenbrier Partners Capital Management in COST?
COST at 15.54% is 1.7 times the average stock position in the Greenbrier Partners Capital Management portfolio, which is 9%. The largest holding is AAPL at 21.6%. The three largest stocks together are 52.68% of the reported book. A quarter earlier COST was 17.07% of the book.
Where does COST sit in the Greenbrier Partners Capital Management portfolio?
COST ranks 3rd of 11 stock positions in the Greenbrier Partners Capital Management portfolio at 15.54%, above the fund's average stock position of 9%. The COST cut was the 7th largest of the quarter's 11 position changes by percent change to portfolio. Across the 2026 Q2 portfolio, Greenbrier Partners Capital Management reported 11 stock positions, with no position opened or closed. The total portfolio value is about $1.3B, up 3% from the prior quarter.
How long has Greenbrier Partners Capital Management held COST?
Greenbrier Partners Capital Management has held COST since at least the quarter ended June 30, 2013, the start of the filings we track. The weight peaked at 17.07% in 2026 Q1. The share count was unchanged the quarter before. Every reported trade is on the Greenbrier Partners Capital Management COST trade history page.
Did other funds buy or sell COST in 2026 Q2?
Among the other tracked funds that had filed for 2026 Q2 as of August 12, 2026, 2 hold COST. The largest sellers were Thomas Russo and Christopher Bloomstran. Every tracked holder of COST is on the COST ownership page.
FAQ
What share of the Greenbrier Partners Capital Management portfolio is COST?
COST is 15.54% of the Greenbrier Partners Capital Management portfolio as of 2026 Q2, the 3rd largest of 11 stock positions.
What is the COST stake of Greenbrier Partners Capital Management worth?
Greenbrier Partners Capital Management holds 222K shares of COST, worth about $207.4M at June 30, 2026 prices, 15.54% of the reported portfolio.
What are the largest holdings of Greenbrier Partners Capital Management?
The largest stock positions of Greenbrier Partners Capital Management as of 2026 Q2 are AAPL (21.6%), META (15.55%) and COST (15.54%), together 52.68% of the book.
Did Greenbrier Partners Capital Management change its COST position in 2026 Q2?
Greenbrier Partners Capital Management trimmed the share count by 0% in 2026 Q2.