Institutional Manager · CIK 0001505183
Stockbridge Partners LLC
Boston, MA · File #028-14383
Latest AUM
$4.54B
Positions
13
Top-10 Concentration
89.5%
Filings
9
Portfolio Value Over Time
2024-03
2024-06
2024-09
2024-12
2025-03
2025-06
2025-09
2025-12
Biggest QoQ Changes
Ranked by conviction flow (share change × current price) so mark-to-market moves don't dominate. Price effect column shows how much of the $ change was just the stock moving.
| Action | Issuer | Ticker / CUSIP | Δ Shares | Flow ($) | Price Effect |
|---|---|---|---|---|---|
| NEW | ALPHABET INC | GOOG | +925,406 | +$289.7M | $0 |
| EXITED | HILTON WORLDWIDE HLDGS INC | 43300A203 | -886,951 | -$230.1M | $0 |
| ADD | SERVICENOW INC | NOW | +1,477,910 | +$226.4M | -$322.0M |
| REDUCE | KLA CORP | KLAC | -157,727 | -$191.7M | +$42.4M |
| REDUCE | TRANSDIGM GROUP INC | TDG | -90,953 | -$121.0M | +$6.2M |
| REDUCE | AMAZON COM INC | AMZN | -450,675 | -$104.0M | +$27.3M |
| EXITED | THERMO FISHER SCIENTIFIC INC | 883556102 | -207,584 | -$100.7M | $0 |
| REDUCE | MICROSOFT CORP | MSFT | -182,238 | -$88.1M | -$32.0M |
| ADD | GUIDEWIRE SOFTWARE INC | GWRE | +405,850 | +$81.6M | -$30.0M |
| ADD | WASTE CONNECTIONS INC | WCN | +132,786 | +$23.3M | -$983,192 |
Sector Allocation
Filing History
- 13F HOLDINGS REPORTQ/E Dec 202513 pos · $4.54B
- 13F HOLDINGS REPORTQ/E Sep 202514 pos · $5.17B
- 13F HOLDINGS REPORTQ/E Jun 202512 pos · $5.11B
- 13F HOLDINGS REPORTQ/E Mar 202512 pos · $4.52B
- 13F HOLDINGS REPORTQ/E Dec 202412 pos · $4.71B
- 13F HOLDINGS REPORTQ/E Sep 202413 pos · $4.98B
- 13F HOLDINGS REPORTQ/E Jun 202413 pos · $4.84B
- 13F HOLDINGS REPORTQ/E Mar 202413 pos · $4.85B
- 13F HOLDINGS REPORTQ/E Dec 202315 pos · $4.50B
Top 13 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | TAIWAN SEMICONDUCTOR MFG LTD | 874039100 | 2,120,920 | $644.5M | 14.19% |
| 2 | TRANSDIGM GROUP INC | TDG | 434,280 | $577.5M | 12.71% |
| 3 | AMAZON COM INC | AMZN | 1,975,866 | $456.1M | 10.04% |
| 4 | WASTE CONNECTIONS INC | WCN | 2,367,313 | $415.1M | 9.14% |
| 5 | VULCAN MATLS CO | 929160109 | 1,317,084 | $375.7M | 8.27% |
| 6 | DEERE & CO | DE | 778,195 | $362.3M | 7.97% |
| 7 | MICROSOFT CORP | MSFT | 748,574 | $362.0M | 7.97% |
| 8 | VEEVA SYS INC | VEEV | 1,302,898 | $290.8M | 6.40% |
| 9 | SERVICENOW INC | NOW | 1,897,705 | $290.7M | 6.40% |
| 10 | GUIDEWIRE SOFTWARE INC | GWRE | 1,445,206 | $290.5M | 6.39% |
| 11 | ALPHABET INC | GOOG | 925,406 | $289.7M | 6.38% |
| 12 | KLA CORP | KLAC | 152,948 | $185.8M | 4.09% |
| 13 | KLARNA GROUP PLC | KLAR | 82,119 | $2.4M | 0.05% |