Stockbridge Partners LLC
In its 13F for Q4 2025 (holdings as of December 31, 2025, filed February 17, 2026), Stockbridge Partners LLC reported 13 stock positions worth $4.5 billion. Its top holding was Taiwan Semiconductor-SP ADR (TSM) at 14.2% of the portfolio, followed by Transdigm (TDG, 12.7%) and Amazon.com (AMZN, 10.0%). Compared with Q3 2025, it opened 1 new position, sold out of 2, added to 2 and reduced 9. The biggest buy was a new position in Alphabet Class A (GOOGL) and the biggest sale an exit from Hilton Worldwide (HLT).
- Most Recent 13F
- Q2 2026
- Location
- Boston, MA
- CIK
- 0001505183
- Portfolio Value
- $4.5B (Q4 2025)
- SEC Filing
- 0000919574-26-001019 ↗ filed Feb 17, 2026
Holdings Value
Holdings 13 stocks · $4.5B
| TSM Taiwan Semiconductor-SP ADR | 14.19% | 2,120,920 | $644.5M | Reduce -0.3% |
| TDG Transdigm Group Inc. | 12.71% | 434,280 | $577.5M | Reduce -17.3% |
| AMZN Amazon.com Inc. | 10.04% | 1,975,866 | $456.1M | Reduce -18.6% |
| WCN Waste Connections Inc. | 9.14% | 2,367,313 | $415.1M | Add +5.9% |
| VMC Vulcan Materials Co. | 8.27% | 1,317,084 | $375.7M | Reduce -5.7% |
| DE Deere & Co. | 7.97% | 778,195 | $362.3M | Reduce -2.4% |
| MSFT Microsoft Corp. | 7.97% | 748,574 | $362.0M | Reduce -19.6% |
| VEEV Veeva Systems Inc. Class A | 6.40% | 1,302,898 | $290.8M | Reduce -0.3% |
| NOW ServiceNow Inc. | 6.40% | 1,897,705 | $290.7M | Reduce -9.6% |
| GWRE Guidewire Software Inc. | 6.39% | 1,445,206 | $290.5M | Add +39.0% |
| GOOGL Alphabet Inc. Class A | 6.38% | 925,406 | $289.7M | New |
| KLAC KLA Corp. | 4.09% | 152,948 | $185.8M | Reduce -50.8% |
| KLAR Klarna Group PLC | 0.05% | 82,119 | $2.4M | No change |
Portfolio Sells Q3 2025 → Q4 2025
| HLT Hilton Worldwide Holdings Inc. | Sold out | 0.00% | −4.45 |
| KLAC KLA Corp. | Reduce -50.8% | 4.09% | −2.39 |
| TMO Thermo Fisher Scientific Inc. | Sold out | 0.00% | −1.95 |
| MSFT Microsoft Corp. | Reduce -19.6% | 7.97% | −1.35 |
| VEEV Veeva Systems Inc. Class A | Reduce -0.3% | 6.40% | −1.12 |
| NOW ServiceNow Inc. | Reduce -9.6% | 6.40% | −1.07 |
| TDG Transdigm Group Inc. | Reduce -17.3% | 12.71% | −0.67 |
| AMZN Amazon.com Inc. | Reduce -18.6% | 10.04% | −0.26 |
| VMC Vulcan Materials Co. | Reduce -5.7% | 8.27% | −0.04 |
| DE Deere & Co. | Reduce -2.4% | 7.97% | +0.93 |
| TSM Taiwan Semiconductor-SP ADR | Reduce -0.3% | 14.19% | +2.69 |
Portfolio Buys Q3 2025 → Q4 2025
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 17 | $4.8B | TSM, TDG, GOOGL, AMZN, DE |
| Q1 2026 | 16 | $4.1B | TSM, AMZN, TDG, WCN, DE |
| Q4 2025 | 13 | $4.5B | TSM, TDG, AMZN, WCN, VMC |
| Q3 2025 | 14 | $5.2B | TDG, TSM, AMZN, MSFT, VMC |
| Q2 2025 | 12 | $5.1B | TDG, AMZN, MSFT, TSM, VEEV |
| Q1 2025 | 12 | $4.5B | TDG, AMZN, DE, WCN, MSFT |
| Q4 2024 | 12 | $4.7B | TDG, AMZN, GWRE, VMC, DE |
| Q3 2024 | 13 | $5.0B | TDG, AMZN, GWRE, VMC, DE |
| Q2 2024 | 13 | $4.8B | TDG, GWRE, AMZN, MSFT, NYT |
| Q1 2024 | 13 | $4.9B | TDG, AMZN, VMC, MSFT, TMO |