Rockbridge Asset Management LLC
Long book
$148.3M
Q1 2026
Positions
26
Top-10 weight
79%
concentration
Last quarter
+4.9%
SPY +14.8%
Turnover
19%
of book per quarter
Strategy in plain words
auto-generated from filingsRockbridge Asset Management LLC is a concentrated fundamental stock-picker, running a $148.3M US long book across 26 positions.
The portfolio is extremely concentrated — the top 10 positions are almost the whole book. Turnover is modest: positions are typically held for years. Current anchor positions: MARKEL GROUP INC, AMERICAN TOWER CORP, O'REILLY AUTOMOTIVE INC, AMAZON.COM INC, MICROSOFT CORP.
Over the last 6 quarters its long book ran on average 4.2pp per quarter behind the S&P 500, beating the index in 1 of 6 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
Q4 2024
+0.6%
Q1 2025
+3.7%
Q2 2025
+2.5%
Q3 2025
-0.7%
Q4 2025
-8.3%
Q1 2026
+4.9%
Sector allocation
Consumer discretionary 29%
Financials 25%
Technology 24%
Services media 12%
Industrials 7%
Real estate 1%
Energy 1%
Utilities 0%
Long book by quarter
What does Rockbridge Asset own?
Q1 2026 13F| Company | Sector | Shares | Value | % of book | Change |
|---|---|---|---|---|---|
| MKL MARKEL GROUP INC | Financials | 9.4K | $18.0M | 12.1% | +4.4% |
| ORLY O'REILLY AUTOMOTIVE INC | Consumer discretionary | 145.9K | $13.5M | 9.1% | -9.9% |
| AMZN AMAZON.COM INC | Consumer discretionary | 61.3K | $12.8M | 8.6% | -16.7% |
| MSFT MICROSOFT CORP | Technology | 30.8K | $11.4M | 7.7% | -8.5% |
| BRK/B BERKSHIRE HATHAWAY INC-CL B | Financials | 22.9K | $11.0M | 7.4% | -6.2% |
| LMT LOCKHEED MARTIN CORP | Industrials | 15.9K | $9.6M | 6.5% | -7.7% |
| CPRT COPART INC | Consumer discretionary | 276.0K | $9.2M | 6.2% | +5.7% |
| AAPL APPLE INC | Technology | 33.8K | $8.6M | 5.8% | -6.6% |
| MA MASTERCARD INC - A | Services media | 16.5K | $8.3M | 5.6% | -9.0% |
| V VISA INC-CLASS A SHARES | Services media | 24.6K | $7.4M | 5.0% | +22.9% |
| CCC CCC INTELLIGENT SOLUTIONS HO | Technology | 1.1M | $6.4M | 4.3% | +47.4% |
| GOOGL ALPHABET INC-CL A | Technology | 20.6K | $5.9M | 4.0% | -5.1% |
| KNSL KINSALE CAPITAL GROUP INC | Financials | 11.4K | $3.9M | 2.6% | +357.3% |
| BLDR BUILDERS FIRSTSOURCE INC | Consumer discretionary | 32.9K | $2.7M | 1.8% | -7.9% |
| CBRE CBRE GROUP INC - A | Real estate | 11.3K | $1.5M | 1.0% | New |
| JPM JPMORGAN CHASE & CO | Financials | 2.4K | $713K | 0.5% | Held |
| CVX CHEVRON CORP | Energy | 2.7K | $558K | 0.4% | Held |
| MPLX MPLX LP | Energy | 5.4K | $307K | 0.2% | Held |
| AEP AMERICAN ELECTRIC POWER | Utilities | 2.1K | $277K | 0.2% | Held |
| PG PROCTER & GAMBLE CO/THE | Other | 1.7K | $249K | 0.2% | Held |
| GE GENERAL ELECTRIC | Industrials | 875 | $248K | 0.2% | Held |
| AVGO BROADCOM INC | Technology | 700 | $217K | 0.1% | Held |
| ISOU ISOENERGY LTD | Materials | 10.0K | $105K | 0.1% | Held |
13F filing history
| Period | Form | Filed | Entries | Reported value | Flags | Source |
|---|---|---|---|---|---|---|
| Q1 2026 | 13F-HR | May 15, 2026 | 27 | $148.9M | canonical | SEC ↗ |
| Q4 2025 | 13F-HR | Feb 12, 2026 | 31 | $165.6M | canonical | SEC ↗ |
| Q3 2025 | 13F-HR | Nov 12, 2025 | 29 | $169.4M | canonical | SEC ↗ |
| Q2 2025 | 13F-HR | Jul 29, 2025 | 27 | $175.7M | canonical | SEC ↗ |
| Q1 2025 | 13F-HR | May 14, 2025 | 24 | $163.4M | canonical | SEC ↗ |
| Q4 2024 | 13F-HR | Feb 14, 2025 | 24 | $175.9M | canonical | SEC ↗ |
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