StockDriftsStockDriftsTop 50 Birch Hill Investment Advisors LLC Holdings
| Stock | Company | % Port. | Shares | Value | Activity | Ownership | Avg. Cost | Date |
|---|---|---|---|---|---|---|---|---|
| MSFT | MICROSOFT CORP | 5.89% | 279.2K | $143.2M | -1.52%(-4.31K) | $43.76(+1119.08%) | 2026-09-30 | |
| AMZN | AMAZON COM INC | 5.48% | 535.0K | $133.3M | -2.15%(-11.75K) | $28.12(+833.17%) | 2026-09-30 | |
| AAPL | APPLE INC | 4.99% | 364.0K | $121.2M | -0.84%(-3.07K) | $56.69(+504.95%) | 2026-09-30 | |
| APH | AMPHENOL CORP | 4.82% | 1.39M | $117.1M | -3.51%(-50.53K) | $47.83(+67.85%) | 2026-09-30 | |
| GOOGL | ALPHABET INC | 4.36% | 308.1K | $106.0M | -2.10%(-6.60K) | $36.95(+831.39%) | 2026-09-30 | |
| BRK.B | BERKSHIRE HATHAWAY INC DEL | 4.3% | 209.7K | $104.4M | -1.35%(-2.86K) | $200.36(+165.64%) | 2026-09-30 | |
| ASML | ASML HLDG NV | 3.29% | 44.1K | $79.9M | +7.31%(+3.01K) | $978.92(+68.26%) | 2026-09-30 | |
| ECL | ECOLAB INC | 3.27% | 289.4K | $79.5M | -1.10%(-3.22K) | $83.32(+243.20%) | 2026-09-30 | |
| ROK | ROCKWELL AUTOMATION INC | 3.26% | 182.0K | $79.2M | -2.18%(-4.06K) | $246.79(+71.99%) | 2026-09-30 | |
| VRTX | VERTEX PHARMACEUTICALS INC | 3.09% | 143.5K | $75.0M | -2.83%(-4.18K) | $231.30(+117.02%) | 2026-09-30 |
| Performance Metric | 3-Year Annualized | 3-Year Cumulative | 5-Year Annualized | 5-Year Cumulative |
|---|---|---|---|---|
| Top 20 Holdings Weighted | +15.91% | +55.74% | +10.38% | +63.84% |
| Top 20 Holdings Unweighted | +17.05% | +60.35% | +11.00% | +68.50% |
Birch Hill Investment Advisors LLC reports $2.43B in US-listed equity holdings across 219 positions in its most recent 13F filing. Its largest disclosed positions are MSFT (5.9%), AMZN (5.5%) and AAPL (5.0%). The top 20 holdings account for 67.43% of reported assets. Its disclosed equity book has returned +55.74% on a three-year cumulative basis. Figures reflect the Q3 2026 filing.
Portfolio changes
Every reported change this quarter, grouped by direction. The signal is in the rotation, not any single trade.
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Holdings on this page are parsed from Birch Hill Investment Advisors LLC’s Form 13F filings with the U.S. Securities and Exchange Commission (CIK 1424177). View Birch Hill Investment Advisors LLC’s 13F filings on SEC