Stockbridge Partners LLC: AMAZON.COM (AMZN): Quarterly 13F Position History
As of Q1 2026, Stockbridge Partners LLC reported 2,474,931 shares of AMAZON.COM (AMZN), worth $515.5M and representing 12.5% of its 13F equity book. Quarter-over-quarter share count change: + 499,065 (+25.3%) . The position first appeared in Q3 2016 and has been disclosed across 39 13F-HR filings in Pactolio's tracked window.
- 2,474,931Shares Held (Latest Filing)
- $515.5MReported Market Value (Latest Filing)
- 12.5%Portfolio Weight (% of 13F Equity Book)
- +499,065Quarter-over-Quarter Share Change
- +$59.4MQuarter-over-Quarter Value Change
- 3,602,048Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 39 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q1 2026 | 2,474,931 | +499,065 | +25.3% | $515.5M | 12.5% | $208.3 |
| Q4 2025 | 1,975,866 | 450,675 | -18.6% | $456.1M | 10.0% | $230.8 |
| Q3 2025 | 2,426,541 | 56,708 | -2.3% | $532.8M | 10.3% | $219.6 |
| Q2 2025 | 2,483,249 | 383,180 | -13.4% | $544.8M | 10.7% | $219.4 |
| Q1 2025 | 2,866,429 | 449,297 | -13.6% | $545.4M | 12.1% | $190.3 |
| Q4 2024 | 3,315,726 | 46,691 | -1.4% | $727.4M | 15.4% | $219.4 |
| Q3 2024 | 3,362,417 | +786,131 | +30.5% | $626.5M | 12.6% | $186.3 |
| Q2 2024 | 2,576,286 | 38,412 | -1.5% | $497.9M | 10.3% | $193.3 |
| Q1 2024 | 2,614,698 | +197,362 | +8.2% | $471.6M | 9.7% | $180.4 |
| Q4 2023 | 2,417,336 | +23,389 | +1.0% | $367.3M | 7.8% | $151.9 |
| Q3 2023 | 2,393,947 | 316,444 | -11.7% | $304.3M | 6.8% | $127.1 |
| Q2 2023 | 2,710,391 | 634,213 | -19.0% | $353.3M | 7.2% | $130.4 |
| Q1 2023 | 3,344,604 | 257,444 | -7.1% | $345.5M | 8.0% | $103.3 |
| Q4 2022 | 3,602,048 | +121,832 | +3.5% | $302.6M | 8.1% | $84.0 |
| Q3 2022 | 3,480,216 | +97,223 | +2.9% | $393.3M | 11.1% | $113.0 |
| Q2 2022 | 3,382,993 | +3,283,176 | +3289.2% | $359.3M | 9.4% | $106.2 |
| Q1 2022 | 99,817 | +22,000 | +28.3% | $325.4M | 7.0% | $3259.9 |
| Q4 2021 | 77,817 | +12,347 | +18.9% | $259.5M | 5.2% | $3334.3 |
| Q3 2021 | 65,470 | 130 | -0.2% | $215.1M | 4.4% | $3285.0 |
| Q2 2021 | 65,600 | 32,733 | -33.3% | $225.7M | 4.8% | $3440.2 |
| Q1 2021 | 98,333 | 31,381 | -24.2% | $304.3M | 7.4% | $3094.1 |
| Q4 2020 | 129,714 | 16,150 | -11.1% | $422.5M | 9.9% | $3256.9 |
| Q3 2020 | 145,864 | 38,414 | -20.8% | $459.3M | 12.6% | $3148.7 |
| Q2 2020 | 184,278 | 5,741 | -3.0% | $508.4M | 16.0% | $2758.8 |
| Q1 2020 | 190,019 | +1,000 | +0.5% | $370.5M | 14.7% | $1949.7 |
| Q4 2019 | 189,019 | 0 | — | $349.3M | 12.7% | $1847.8 |
| Q3 2019 | 189,019 | +69,307 | +57.9% | $328.1M | 13.0% | $1735.9 |
| Q2 2019 | 119,712 | 8,493 | -6.6% | $226.7M | 8.8% | $1893.6 |
| Q1 2019 | 128,205 | +3,168 | +2.5% | $228.3M | 8.4% | $1780.7 |
| Q4 2018 | 125,037 | +31,120 | +33.1% | $187.8M | 8.5% | $1502.0 |
| Q3 2018 | 93,917 | 1,755 | -1.8% | $188.1M | 7.5% | $2003.0 |
| Q2 2018 | 95,672 | 21,162 | -18.1% | $162.6M | 6.8% | $1699.8 |
| Q1 2018 | 116,834 | 4,765 | -3.9% | $169.1M | 7.3% | $1447.3 |
| Q4 2017 | 121,599 | 6,402 | -5.0% | $142.2M | 6.7% | $1169.5 |
| Q3 2017 | 128,001 | +12,773 | +11.1% | $123.1M | 6.2% | $961.4 |
| Q2 2017 | 115,228 | 5,087 | -4.2% | $111.5M | 5.1% | $968.0 |
| Q1 2017 | 120,315 | +434 | +0.4% | $106.7M | 5.0% | $886.5 |
| Q4 2016 | 119,881 | +62,312 | +108.2% | $89.9M | 4.4% | $749.9 |
| Q3 2016 | 57,569 | — | — | $48.2M | 2.3% | $837.3 |
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 AMZN position in 13F-HR filings?
Stockbridge Partners LLC first reported AMAZON.COM (AMZN) on its 13F-HR filing for the period ending 2016-09-30 (Q3 2016). The position has appeared on 39 reported quarters within Pactolio's tracked window.
What was Stockbridge Partners LLC's most recent quarter-over-quarter share-count change in AMZN?
Between Q4 2025 and Q1 2026, Stockbridge Partners LLC added 499,065 shares of AMZN (+25.3%), bringing the total reported position to 2,474,931 shares at a market value of $515.5M.
Does the implied price-per-share represent Stockbridge Partners LLC's cost basis in AMZN?
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.