Rockbridge Asset Management LLC
In its 13F for Q2 2025 (holdings as of June 30, 2025, filed July 29, 2025), Rockbridge Asset Management LLC reported 27 stock positions worth $175.7 million. Its top holding was American Tower (AMT) at 11.5% of the portfolio, followed by Markel (MKL, 10.9%) and Amazon.com (AMZN, 10.2%). Compared with Q1 2025, it opened 3 new positions, added to 5 and reduced 10. The biggest buy was a new position in Amrize (AMRZ) and the biggest sale Berkshire Hathaway Class B (BRK.B, shares −0%).
- Most Recent 13F
- Q2 2026
- Location
- ALEXANDRIA, VA
- CIK
- 0002056320
- Portfolio Value
- $175.7M (Q2 2025)
- SEC Filing
- 0002056320-25-000005 ↗ filed Jul 29, 2025
Holdings Value
Holdings 27 stocks · $175.7M
| AMT American Tower Corp. | 11.54% | 91,726 | $20.3M | Reduce -0.5% |
| MKL Markel Group Inc. | 10.86% | 9,554 | $19.1M | Reduce -0.4% |
| AMZN Amazon.com Inc. | 10.18% | 81,557 | $17.9M | Add +3.6% |
| MSFT Microsoft Corp. | 10.00% | 35,307 | $17.6M | Reduce -3.6% |
| ORLY O'reilly Automotive Inc. | 8.90% | 173,460 | $15.6M | Reduce -0.3% |
| BRK.B Berkshire Hathaway Inc. Class B | 7.16% | 25,888 | $12.6M | Reduce -0.3% |
| CPRT Copart Inc. | 6.92% | 247,819 | $12.2M | Add +3.1% |
| MA Mastercard Inc. Class A | 6.08% | 19,022 | $10.7M | Reduce -0.4% |
| LMT Lockheed Martin Corp. | 4.80% | 18,213 | $8.4M | Reduce -0.4% |
| AAPL Apple Inc. | 4.49% | 38,431 | $7.9M | Reduce -0.3% |
| CCC CCC Intelligent Solutions Ho | 3.65% | 681,249 | $6.4M | Add +47.9% |
| V Visa Inc. Class A | 3.17% | 15,690 | $5.6M | Reduce -0.5% |
| DBRG Digitalbridge Group Inc. | 2.54% | 430,398 | $4.5M | Reduce -4.7% |
| GOOGL Alphabet Inc. Class A | 2.48% | 24,699 | $4.4M | Add +48.0% |
| BLDR Builders Firstsource Inc. | 2.44% | 36,686 | $4.3M | Add +29.2% |
| AMRZ Amrize Ltd. | 1.14% | 40,276 | $2.0M | New |
| OLED Universal Display Corp. | 1.10% | 12,468 | $1.9M | No change |
| SBAC SBA Communications Corp. | 0.82% | 6,131 | $1.4M | No change |
| JPM JPMorgan Chase & Co. | 0.40% | 2,424 | $703K | No change |
| LULU Lululemon Athletica Inc. | 0.29% | 2,112 | $502K | No change |
| CVX Chevron Corp. | 0.22% | 2,695 | $386K | No change |
| MRP Millrose Properties | 0.21% | 12,851 | $366K | New |
| MPLX MPLX LP | 0.16% | 5,381 | $277K | No change |
| PG The Procter & Gamble Co. | 0.16% | 1,721 | $274K | No change |
| GE General Electric filed as GE AEROSPACE | 0.13% | 875 | $225K | New |
| AEP American Electric Power | 0.13% | 2,116 | $220K | No change |
| AES AES Corp. | 0.06% | 10,000 | $105K | No change |
Portfolio Sells Q1 2025 → Q2 2025
| BRK.B Berkshire Hathaway Inc. Class B | Reduce -0.3% | 7.16% | −1.31 |
| ORLY O'reilly Automotive Inc. | Reduce -0.3% | 8.90% | −1.27 |
| AAPL Apple Inc. | Reduce -0.3% | 4.49% | −0.75 |
| AMT American Tower Corp. | Reduce -0.5% | 11.54% | −0.73 |
| MA Mastercard Inc. Class A | Reduce -0.4% | 6.08% | −0.32 |
| V Visa Inc. Class A | Reduce -0.5% | 3.17% | −0.21 |
| LMT Lockheed Martin Corp. | Reduce -0.4% | 4.80% | −0.20 |
| MKL Markel Group Inc. | Reduce -0.4% | 10.86% | −0.11 |
| DBRG Digitalbridge Group Inc. | Reduce -4.7% | 2.54% | +0.10 |
| MSFT Microsoft Corp. | Reduce -3.6% | 10.00% | +1.59 |
Portfolio Buys Q1 2025 → Q2 2025
| AMRZ Amrize Ltd. | New | 1.14% | +1.14 |
| CCC CCC Intelligent Solutions Ho | Add +47.9% | 3.65% | +1.10 |
| AMZN Amazon.com Inc. | Add +3.6% | 10.18% | +1.02 |
| GOOGL Alphabet Inc. Class A | Add +48.0% | 2.48% | +0.90 |
| BLDR Builders Firstsource Inc. | Add +29.2% | 2.44% | +0.27 |
| MRP Millrose Properties | New | 0.21% | +0.21 |
| GE General Electric | New | 0.13% | +0.13 |
| CPRT Copart Inc. | Add +3.1% | 6.92% | −1.40 |
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 30 | $152.5M | MKL, AMZN, ORLY, CPRT, AMT |
| Q1 2026 | 26 | $148.3M | MKL, AMT, ORLY, AMZN, MSFT |
| Q4 2025 | 30 | $165.0M | MKL, AMZN, MSFT, AMT, ORLY |
| Q3 2025 | 29 | $169.4M | MSFT, ORLY, AMT, MKL, AMZN |
| Q2 2025 | 27 | $175.7M | AMT, MKL, AMZN, MSFT, ORLY |
| Q1 2025 | 24 | $163.4M | AMT, MKL, ORLY, AMZN, BRK.B |
| Q4 2024 | 24 | $175.9M | MKL, MSFT, AMZN, AMT, ORLY |