What is SEC Form 13F? Ultimate Guide to Institutional Equity Filings
Learn how SEC Form 13F filings work, the $100M threshold, 45-day reporting lag, and how to track top hedge fund holdings.
CIK: 0001505183
Total reported value
$4.8B
$4.8B
14 檔
57.5%
In Q3 2025, Stockbridge Partners LLC's U.S. equity holdings reached a combined market value of $4.8B, distributed across 14 disclosed stock positions.
During Q3 2025, Stockbridge Partners LLC performed routine portfolio adjustments (2 new buys, 4 additions, 8 trims, and 0 full exits), keeping overall allocation balanced.
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | TDG | Transdigm Group Inc | Stock-Industrials | 13.39% | +0.01% | -1.37% | |
| 2 | TSM | Taiwan Semiconductor-sp Adr | Stock-Tech | 11.49% | +3.26% | -4.04% | |
| 3 | AMZN | Amazon.com Inc | Stock-Consumer Disc | 10.30% | -3.54% | -2.28% | |
| 4 | MSFT | Microsoft CORP | Stock-Tech | 9.32% | -4.70% | EXIT | |
| 5 | VMC | Vulcan Materials Co | Stock-Materials | 8.31% | -0.89% | -1.63% | |
| 6 | WCN | Waste Connections Inc | Stock-Industrials | 7.60% | -5.55% | +4.53% | |
| 7 | VEEV | Veeva Systems Inc-class A | Stock-Healthcare | 7.52% | +1.51% | NEW | |
| 8 | NOW | Servicenow Inc | Stock-Tech | 7.47% | — | +96.79% | |
| 9 | DE | Deere & Co | Stock-Industrials | 7.05% | -0.12% | -4.58% | |
| 10 | KLAC | Kla CORP | Stock-Tech | 6.48% | -4.74% | EXIT | |
| 11 | GWRE | Guidewire Software Inc | Stock-Tech | 4.62% | +1.48% | -16.73% | |
| 12 | HLT | Hilton Worldwide Holdings In | Stock-Consumer Disc | 4.45% | — | -32.16% | |
| 13 | TMO | Thermo Fisher Scientific Inc | Stock-Healthcare | 1.95% | — | -66.08% | |
| 14 | KLAR | Klarna Group plc | Stock-Other | 0.06% | — | — |
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | TSM | Taiwan Semiconductor-sp Adr | +8% | -4.04% | Add |
| 2 | NOW | Servicenow Inc | +3.9% | +96.79% | Add |
| 3 | VMC | Vulcan Materials Co | +1.1% | -1.63% | Add |
| 4 | MSFT | Microsoft CORP | +0.5% | -8.22% | Trim |
| 5 | VEEV | Veeva Systems Inc-class A | +0.3% | -16.34% | Trim |
| 6 | WCN | Waste Connections Inc | -1.6% | +4.53% | Add |
| 7 | AMZN | Amazon.com Inc | -1.8% | -2.28% | Trim |
| 8 | DE | Deere & Co | -2.1% | -4.58% | Trim |
| 9 | GWRE | Guidewire Software Inc | -2.6% | -16.73% | Trim |
| 10 | HLT | Hilton Worldwide Holdings In | -2.8% | -32.16% | Trim |
| 11 | TDG | Transdigm Group Inc | -4.3% | -1.37% | Trim |
| 12 | TMO | Thermo Fisher Scientific Inc | -5.2% | -66.08% | Trim |
| 13 | KLAC | Kla CORP | — | NEW | New buy |
| 14 | KLAR | Klarna Group plc | — | NEW | New buy |
According to official SEC Form 13F filings, Stockbridge Partners LLC reported a total U.S. public equity portfolio value of $4.8B across 14 disclosed positions in Q3 2025.
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Learn how SEC Form 13F filings work, the $100M threshold, 45-day reporting lag, and how to track top hedge fund holdings.
In terms of portfolio concentration, the top 5 core holdings (including TDG, TSM, AMZN) accounted for 57.5% of total reported equity market value during Q3 2025.
Top New Position Initiated
KLAC
市值: $335.1M
Top Position Liquidated / Trimmed
TDG
前期市值: $799.9M
During Q3 2025, Stockbridge Partners LLC's top holdings by market value included TDG (13.4%)、TSM (11.5%)、AMZN (10.3%). The largest single position, TDG, represented 13.4% of total portfolio value.
In Q3 2025, Stockbridge Partners LLC made 14 total portfolio adjustments, initiating 2 new buys, adding to 4 positions, trimming 8 holdings, and fully liquidating 0 stocks.
All holding records on this page are fetched directly from the U.S. Securities and Exchange Commission (SEC) EDGAR system (Form 13F-HR). AlphaSMO parses CUSIP identifiers and formats data into Schema.org-compliant datasets.
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