Stockbridge Partners LLC: WASTE CONNECTIONS INC (WCN): Quarterly 13F Position History
As of Q1 2026, Stockbridge Partners LLC reported 2,451,169 shares of WASTE CONNECTIONS INC (WCN), worth $398.2M and representing 9.6% of its 13F equity book. Quarter-over-quarter share count change: + 83,856 (+3.5%) . The position first appeared in Q4 2023 and has been disclosed across 10 13F-HR filings in Pactolio's tracked window.
- 2,451,169Shares Held (Latest Filing)
- $398.2MReported Market Value (Latest Filing)
- 9.6%Portfolio Weight (% of 13F Equity Book)
- +83,856Quarter-over-Quarter Share Change
- -$17.0MQuarter-over-Quarter Value Change
- 2,451,169Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 10 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q1 2026 | 2,451,169 | +83,856 | +3.5% | $398.2M | 9.6% | $162.4 |
| Q4 2025 | 2,367,313 | +132,786 | +5.9% | $415.1M | 9.1% | $175.4 |
| Q3 2025 | 2,234,527 | +96,753 | +4.5% | $392.8M | 7.6% | $175.8 |
| Q2 2025 | 2,137,774 | +14,465 | +0.7% | $399.2M | 7.8% | $186.7 |
| Q1 2025 | 2,123,309 | +154,845 | +7.9% | $414.4M | 9.2% | $195.2 |
| Q4 2024 | 1,968,464 | +127,454 | +6.9% | $337.7M | 7.2% | $171.6 |
| Q3 2024 | 1,841,010 | 185,359 | -9.1% | $329.2M | 6.6% | $178.8 |
| Q2 2024 | 2,026,369 | 307,631 | -13.2% | $355.3M | 7.3% | $175.4 |
| Q1 2024 | 2,334,000 | +1,340,253 | +134.9% | $401.5M | 8.3% | $172.0 |
| Q4 2023 | 993,747 | — | — | $148.3M | 3.2% | $149.3 |
Methodology & FAQ
How This Position History Is Sourced
Each row is one SEC Form 13F-HR filing disclosing this position. Share count, market value, and reported quarter are taken verbatim from the filing; portfolio weight is recomputed against the same filing's total reported equity book. Implied price-per-share is market value divided by shares — a quarter-end mark, not the manager's cost basis. See the full methodology document for the normalization rules.
When did Stockbridge Partners LLC first disclose a WCN position in 13F-HR filings?
Stockbridge Partners LLC first reported WASTE CONNECTIONS INC (WCN) on its 13F-HR filing for the period ending 2023-12-31 (Q4 2023). The position has appeared on 10 reported quarters within Pactolio's tracked window.
What was Stockbridge Partners LLC's most recent quarter-over-quarter share-count change in WCN?
Between Q4 2025 and Q1 2026, Stockbridge Partners LLC added 83,856 shares of WCN (+3.5%), bringing the total reported position to 2,451,169 shares at a market value of $398.2M.
Does the implied price-per-share represent Stockbridge Partners LLC's cost basis in WCN?
No. The implied price-per-share column is the 13F-HR reported market value divided by reported share count on the filing date (end of quarter). It is a quarter-end mark, not a cost basis or transaction price. Use it as a sanity check on the value column, not as an indicator of the manager's entry or exit price.