13F GuideFiling Basics
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.
AlphaSMO Research GuideRead Guide
CIK: 0001505183
Total reported value
$4.8B
$4.8B
13 檔
51.9%
At the close of Q4 2025, Stockbridge Partners LLC disclosed equity holdings valued at approximately $4.8B, spread across 13 reported holdings.
In Q4 2025, Stockbridge Partners LLC adopted a defensive or profit-taking posture, trimming 8 positions and completely liquidating 2 holdings to manage risk exposure.
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | TSM | Taiwan Semiconductor-sp Adr | Stock-Tech | 14.19% | +3.26% | -0.35% | |
| 2 | TDG | Transdigm Group Inc | Stock-Industrials | 12.71% | +0.01% | -17.32% | |
| 3 | AMZN | Amazon.com Inc | Stock-Consumer Disc | 10.04% | -3.54% | -18.57% | |
| 4 | WCN | Waste Connections Inc | Stock-Industrials | 9.14% | -5.55% | +5.94% | |
| 5 | VMC | Vulcan Materials Co | Stock-Materials | 8.27% | -0.89% | -5.69% | |
| 6 | DE | Deere & Co | Stock-Industrials | 7.97% | -0.12% | -2.40% | |
| 7 | MSFT | Microsoft CORP | Stock-Tech | 7.97% | -4.70% | EXIT | |
| 8 | VEEV | Veeva Systems Inc-class A | Stock-Healthcare | 6.40% | +1.51% | NEW | |
| 9 | NOW | Servicenow Inc | Stock-Tech | 6.40% | — | +352.06% | |
| 10 | GWRE | Guidewire Software Inc | Stock-Tech | 6.39% | +1.48% | +39.05% | |
| 11 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 6.38% | +2.64% | — | |
| 12 | KLAC | Kla CORP | Stock-Tech | 4.09% | -4.74% | EXIT | |
| 13 | KLAR | Klarna Group plc | Stock-Other | 0.05% | — | — |
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | TSM | Taiwan Semiconductor-sp Adr | +2.7% | -0.35% | Trim |
| 2 | GWRE | Guidewire Software Inc | +1.8% | +39.05% | Add |
| 3 | WCN | Waste Connections Inc | +1.5% | +5.94% | Add |
| 4 | DE | Deere & Co | +0.9% | -2.40% | Trim |
| 5 | KLAR | Klarna Group plc | 0% | — | Unchanged |
| 6 | VMC | Vulcan Materials Co | 0% | -5.69% | Trim |
| 7 | AMZN | Amazon.com Inc | -0.3% | -18.57% | Trim |
| 8 | TDG | Transdigm Group Inc | -0.7% | -17.32% | Trim |
| 9 | NOW | Servicenow Inc | -1.1% | +352.06% | Add |
| 10 | VEEV | Veeva Systems Inc-class A | -1.1% | -0.25% | Trim |
| 11 | MSFT | Microsoft CORP | -1.4% | -19.58% | Trim |
| 12 | KLAC | Kla CORP | -2.4% | -50.77% | Trim |
| 13 | GOOGL | Alphabet Inc-cl A | — | NEW | New buy |
| 14 | HLT | Hilton Worldwide Holdings In | — | EXIT | Sold out |
| 15 | TMO | Thermo Fisher Scientific Inc | — | EXIT | Sold out |
According to official SEC Form 13F filings, Stockbridge Partners LLC reported a total U.S. public equity portfolio value of $4.8B across 13 disclosed positions in Q4 2025.
Expert Analysis & Guides for Tracking Wall Street Smart Money Movements
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 TSM, TDG, AMZN) accounted for 51.9% of total reported equity market value during Q4 2025.
Top New Position Initiated
GOOGL
市值: $289.7M
Top Position Liquidated / Trimmed
HLT
前期市值: $230.1M
During Q4 2025, Stockbridge Partners LLC's top holdings by market value included TSM (14.2%)、TDG (12.7%)、AMZN (10.0%). The largest single position, TSM, represented 14.2% of total portfolio value.
In Q4 2025, Stockbridge Partners LLC made 14 total portfolio adjustments, initiating 1 new buys, adding to 3 positions, trimming 8 holdings, and fully liquidating 2 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.
Understand SEC Form 4 insider disclosures for corporate officers, directors, and 10% owners to track executive transactions.
Understand Rule 144 restricted stock sale notices to spot planned insider liquidations before market sell pressure arrives.
Explore the 5% beneficial ownership threshold, 13D vs 13G filing differences, and recent SEC accelerated deadline rules.
Best practices for analyzing 13F quarterly changes without getting misled by stock splits, options, or market valuation drift.
Learn how AlphaSMO's flagship signal detects high-conviction stocks where 13F hedge funds and corporate insiders buy at the same time.