Greenbrier Partners Capital Management, LLC
Long book
$1.30B
Q1 2026
Positions
11
Top-10 weight
99%
concentration
Last quarter
+11.7%
SPY +14.8%
Turnover
8%
of book per quarter
Strategy in plain words
auto-generated from filingsGreenbrier Partners Capital Management, LLC is a concentrated fundamental stock-picker, specialised in technology (64% of the long book), running a $1.30B US long book across 11 positions.
The portfolio is extremely concentrated — the top 10 positions are almost the whole book. The book barely moves quarter to quarter — a patient, low-turnover holder. Current anchor positions: APPLE INC, META PLATFORMS INC-CLASS A, COSTCO WHOLESALE CORP, ALPHABET INC-CL C, AMAZON.COM INC.
Over the last 9 quarters its long book ran on average 0.3pp per quarter ahead of the S&P 500, beating the index in 3 of 9 quarters. We rate its filings highest-signal: new buys here are worth attention.
Implied long-book return vs S&P 500
methodology: positions priced quarterly, no shorts/options Fund long book S&P 500
Q1 2024
+11.4%
Q2 2024
+5.2%
Q3 2024
+7.8%
Q4 2024
-6.5%
Q1 2025
+9.3%
Q2 2025
+8.1%
Q3 2025
+3.1%
Q4 2025
-6.7%
Q1 2026
+11.7%
Sector allocation
Technology 64%
Consumer discretionary 28%
Financials 7%
Communications 1%
Long book by quarter
What does Greenbrier Partners own?
Q1 2026 13F| Company | Sector | Shares | Value | % of book | Change |
|---|---|---|---|---|---|
| AAPL APPLE INC | Technology | 1.2M | $299.6M | 23.1% | -16.9% |
| META META PLATFORMS INC-CLASS A | Technology | 395.1K | $226.0M | 17.4% | -1.3% |
| COST COSTCO WHOLESALE CORP | Consumer discretionary | 222.5K | $221.7M | 17.1% | -0.7% |
| GOOG ALPHABET INC-CL C | Technology | 462.7K | $132.7M | 10.2% | -0.7% |
| AMZN AMAZON.COM INC | Consumer discretionary | 621.2K | $129.4M | 10.0% | -0.7% |
| GOOGL ALPHABET INC-CL A | Technology | 447.4K | $128.6M | 9.9% | -1.9% |
| MKL MARKEL GROUP INC | Financials | 25.6K | $49.0M | 3.8% | -3.6% |
| MSFT MICROSOFT CORP | Technology | 118.8K | $44.0M | 3.4% | -0.7% |
| BRK/B BERKSHIRE HATHAWAY INC-CL B | Financials | 80.7K | $38.7M | 3.0% | -4.6% |
| SPOT SPOTIFY TECHNOLOGY SA | Communications | 35.3K | $17.1M | 1.3% | -0.7% |
| CPRT COPART INC | Consumer discretionary | 347.1K | $11.5M | 0.9% | -0.7% |
13F filing history
| Period | Form | Filed | Entries | Reported value | Flags | Source |
|---|---|---|---|---|---|---|
| Q1 2026 | 13F-HR | May 15, 2026 | 11 | $1.30B | canonical | SEC ↗ |
| Q4 2025 | 13F-HR | Feb 13, 2026 | 12 | $1.49B | $K fixed canonical | SEC ↗ |
| Q3 2025 | 13F-HR | Nov 13, 2025 | 13 | $1.48B | canonical | SEC ↗ |
| Q2 2025 | 13F-HR | Aug 11, 2025 | 13 | $1.36B | canonical | SEC ↗ |
| Q1 2025 | 13F-HR | May 15, 2025 | 14 | $1.28B | canonical | SEC ↗ |
| Q4 2024 | 13F-HR | Feb 11, 2025 | 14 | $1.38B | canonical | SEC ↗ |
| Q3 2024 | 13F-HR | Nov 14, 2024 | 14 | $1.32B | canonical | SEC ↗ |
| Q2 2024 | 13F-HR | Aug 14, 2024 | 13 | $1.21B | canonical | SEC ↗ |
| Q1 2024 | 13F-HR | May 13, 2024 | 13 | $1.08B | canonical | SEC ↗ |