Stockbridge Partners LLC 13F: Quarter-over-Quarter Portfolio Changes
Stockbridge Partners LLC reported a disclosed portfolio value of approximately $4.8 billion in its latest SEC Form 13F-HR filing for Q2 2026, up 14.8% quarter on quarter. Over the quarter, the fund initiated 3 new positions, bought more shares in 8 holdings, trimmed 5 holdings, and exited 2 positions.
Stockbridge Partners LLC's top buy was a new stake in Woodward (WWD) , equal to 2.4% of the disclosed portfolio. Its top sell was Waste Connections INC (WCN) . The fund sold 52.6% of its previously reported shares, reducing the position's portfolio weight by 5.5 percentage points.
New PositionsQ2 2026
Securities disclosed for the first time in Q2 2026 that were not present in the prior 13F-HR filing.
| Company | Ticker | Initial Portfolio Weight | History |
|---|---|---|---|
| WOODWARD | WWD | 2.4% | Holders → |
| VEEVA SYS INC | VEEV | 1.5% | Holders → |
| SERVICETITAN INC | TTAN | 0.3% | Holders → |
Top BuysQ2 2026
The fund's top buys among existing positions in Q2 2026. Ranked by portfolio-weight impact, with the percentage of additional shares shown separately.
| Company | Ticker | Portfolio Weight Change | More Shares | History |
|---|---|---|---|---|
| GUIDEWIRE SOFTWARE | GWRE | +1.5% | +456.9% | Holders → |
| LIBERTY MEDIA CORP DEL | FWONK | +5.7% | +395.2% | History → |
| VISA INC-CLASS A SHRS | V | +1.6% | +65.2% | History → |
| MASTERCARD INC-CLASS A | MA | +1.0% | +55.3% | Holders → |
| ALLISON TRANSMISSION HLDGS I | ALSN | +0.6% | +45.6% | Holders → |
| MARTIN MARIETTA MATLS INC | MLM | +0.1% | +31.8% | Holders → |
| ALPHABET INC-CL A | GOOGL | +2.6% | +28.3% | History → |
| DEERE & CO | DE | +-0.1% | +0.4% | History → |
Top SellsQ2 2026
The fund's top sells among positions it retained in Q2 2026. Ranked by portfolio-weight impact. Full exits are listed separately.
| Company | Ticker | Portfolio Weight Change | Shares Sold | History |
|---|---|---|---|---|
| WASTE CONNECTIONS INC | WCN | -5.5% | 52.6% | History → |
| AMAZON.COM INC | AMZN | -3.5% | 28.2% | History → |
| NVIDIA CORPORATION | NVDA | -1.0% | 15.5% | History → |
| VULCAN MATLS CO | VMC | -0.9% | 6.6% | History → |
| TAIWAN SEMICONDUCTOR MANUFAC | TSM | 3.3% | 3.7% | History → |
Full ExitsQ2 2026
Positions present in the prior 13F-HR filing that no longer appear in Q2 2026.
| Company | Ticker | Last-Reported Portfolio Weight |
|---|---|---|
| KLA CORP | KLAC | 4.7% |
| MICROSOFT CORP | MSFT | 4.7% |
Net Portfolio Value ChangeQ2 2026
- $4.1BPrior quarter
- $4.8BCurrent quarter
- +$0.6BNet delta
- +14.8%% change
Methodology & FAQ
How Stockbridge Partners LLC Quarterly Changes Are Computed
All deltas are sourced from sequential SEC Form 13F-HR filings for Stockbridge Partners LLC: each row joins the most recent filing against the immediately preceding quarterly filing for the same fund. Share-count changes reflect reported trading activity, while portfolio weights can also move because of market price changes. Portfolio weights are normalized to exclude listed options for comparability. A complete description, including how confidential treatment filings are handled, is documented in the Methodology.
What stocks did Stockbridge Partners LLC buy in Q2 2026?
In Q2 2026, Stockbridge Partners LLC initiated 3 new positions (WOODWARD (WWD), VEEVA SYS INC (VEEV), SERVICETITAN INC (TTAN)); bought more shares of GUIDEWIRE SOFTWARE (GWRE), LIBERTY MEDIA CORP DEL (FWONK), VISA INC-CLASS A SHRS (V), MASTERCARD INC-CLASS A (MA), ALLISON TRANSMISSION HLDGS I (ALSN) (the largest 5 of 8 adds).
What stocks did Stockbridge Partners LLC sell in Q2 2026?
In Q2 2026, Stockbridge Partners LLC fully sold 2 positions (KLA CORP (KLAC), MICROSOFT CORP (MSFT)); reduced holdings in WASTE CONNECTIONS INC (WCN), AMAZON.COM INC (AMZN), NVIDIA CORPORATION (NVDA), VULCAN MATLS CO (VMC), TAIWAN SEMICONDUCTOR MANUFAC (TSM).
Which positions did Stockbridge Partners LLC initiate in Q2 2026?
Stockbridge Partners LLC established 3 new positions in Q2 2026: WOODWARD (WWD, 2.4%), VEEVA SYS INC (VEEV, 1.5%), SERVICETITAN INC (TTAN, 0.3%).
Which existing positions saw the largest allocation increases for Stockbridge Partners LLC in Q2 2026?
Of 8 existing positions with share-count increases in Q2 2026, the largest were: GUIDEWIRE SOFTWARE (GWRE, +1.5% weight, +456.9% shares), LIBERTY MEDIA CORP DEL (FWONK, +5.7% weight, +395.2% shares), VISA INC-CLASS A SHRS (V, +1.6% weight, +65.2% shares), MASTERCARD INC-CLASS A (MA, +1.0% weight, +55.3% shares), ALLISON TRANSMISSION HLDGS I (ALSN, +0.6% weight, +45.6% shares), MARTIN MARIETTA MATLS INC (MLM, +0.1% weight, +31.8% shares), ALPHABET INC-CL A (GOOGL, +2.6% weight, +28.3% shares), DEERE & CO (DE, +-0.1% weight, +0.4% shares).
Which positions did Stockbridge Partners LLC fully exit in Q2 2026?
Stockbridge Partners LLC fully exited 2 positions in Q2 2026: KLA CORP (KLAC, last-reported weight 4.7%), MICROSOFT CORP (MSFT, last-reported weight 4.7%).
Which existing positions saw the largest allocation reductions for Stockbridge Partners LLC in Q2 2026?
Of 5 existing positions with share-count reductions in Q2 2026, the largest were: WASTE CONNECTIONS INC (WCN, -5.5% weight, -52.6% shares), AMAZON.COM INC (AMZN, -3.5% weight, -28.2% shares), NVIDIA CORPORATION (NVDA, -1.0% weight, -15.5% shares), VULCAN MATLS CO (VMC, -0.9% weight, -6.6% shares), TAIWAN SEMICONDUCTOR MANUFAC (TSM, 3.3% weight, -3.7% shares).
Do quarter-over-quarter 13F allocation changes constitute explicit trading signals?
No. Quarter-over-quarter changes reflect a combination of active trading and market price movement. A weight increase can result from price appreciation alone, without the manager adding shares. Share-count delta is the cleaner indicator of explicit trading activity. All deltas on this page are sourced from sequential SEC Form 13F-HR filings.