Stockbridge Partners portfolio
Concentrated managerInvestment firmPortfolio as of Jun 30, 2026 (Q2 2026) · filed with the SEC on Aug 14, 2026 · data updated on Nov 5, 2026 · Q2 2026 13F (filing) ↗ · all its 13F filings ↗
A 13F shows the portfolio at quarter-end and is filed up to 45 days later: these are not real-time positions and they may have changed.
Stockbridge Partners reported a $4.8 bn portfolio of 17 positions to the SEC as of the end of Q2 2026. Its largest positions are TSM, TDG, GOOGL. During the quarter it opened Woodward and Veeva Systems and exited KLA and Microsoft.
Sections with a free account
What changed this quarter
17 positions with a change (3 new, 7 added to, 5 trimmed, 2 sold). 12 are listed here: those of 0.5 points of the portfolio or more (up to 12).
- Liberty Media+395%more sharesIncreased1.5% → 7.2%
- Waste Connections−53%fewer sharesReduced9.6% → 4.1%
- KLA−4.1 ppof portfolioSold out4.7% → —
- Microsoft−4.1 ppof portfolioSold out4.7% → —
- Amazon.com−28%fewer sharesReduced12.5% → 8.9%
- Woodward+2.4 ppof portfolioNew— → 2.4%
- Alphabet+28%more sharesIncreased6.8% → 9.4%
- Guidewire Software+457%more sharesIncreased0.5% → 2.0%
- Visa+65%more sharesIncreased2.5% → 4.0%
- Veeva Systems+1.5 ppof portfolioNew— → 1.5%
- Mastercard+55%more sharesIncreased2.5% → 3.5%
- Allison Transmission Holdings+46%more sharesIncreased2.9% → 3.6%
The figure on the right: for positions added to or trimmed, the change in the number of shares (%); for new and sold ones, the points of the portfolio moved (pp). Below, the portfolio weight before → after. Traded weight: what it bought or sold, excluding price effects.
Top holdings
- Taiwan Semiconductor ManufacturingTSM20.8%
- TransDigm GroupTDG12.2%
- AlphabetGOOGL9.4%
- Amazon.comAMZN8.9%
- DeereDE7.6%
- Liberty MediaFWONK7.2%
- Vulcan MaterialsVMC6.6%
- NVIDIANVDA5.5%
- Waste ConnectionsWCN4.1%
- VisaV4.0%
- Allison Transmission HoldingsALSN3.6%
- MastercardMA3.5%
- WoodwardWWD2.4%
- Guidewire SoftwareGWRE2.0%
- Veeva SystemsVEEV1.5%
“Since”: first quarter of the current run, unbroken until today. In the details, prices are the quarter-end prices of the quarters in which it added shares, per the 13F. The manager may have bought at any price within each quarter; the SEC only publishes the value at quarter end.
Portfolio by sector
- ● Industrials 30%
- ● Information Technology 29%
- ● Communication Services 17%
- ● Consumer Discretionary 9%
- ● Financials 7%
- ● Materials 7%
- ● Health Care 2%
How its portfolio changed (8 quarters)
Q2 2026: 17
Q2 2026: 86%
Q2 2026: 18.1%
Traded turnover: the weight it bought plus the weight it sold in the quarter, divided by two, excluding price moves. The plain “turnover” in the header does include that effect. With a free account: the full history and sectors over time.
Stakes above 5% (13D/13G)
Companies where this filer reported holding 5% or more of the shares. It is the figure from its latest filing on each one; history since December 2024.
How we classify it
Investment firm, per its Form ADV of May 28, 2026 (high confidence).
The data, as reported: STOCKBRIDGE INVESTORS (CRD 160674): 7.B private funds: 1 hedge (gross assets $4.6 bn); 5.D assets by client type: pooled vehicles 85%, charities 15% (of $5.4 bn)
The type comes from a rule applied to that data. If it looks wrong, tell us.
Similar managers by type and size
Same type of filer and a 13F portfolio value between a third and three times this one. It is not a comparison of what they hold.
- Smead Capital ManagementInvestment firm · $4.7 bn
- Sachem Head Capital ManagementInvestment firm · $4.8 bn
- MFN Partners ManagementInvestment firm · $4.8 bn
- Third PointInvestment firm · $4.6 bn
- Frazier Life Sciences ManagementInvestment firm · $4.6 bn
- Brave Warrior AdvisorsInvestment firm · $4.6 bn