AutoZone, Inc.
US ˙ NYSE ˙ US0533321024

SecurityAZO / AutoZone, Inc.
InstitutionMarshfield Associates
Latest Disclosed Ownership165,033 shares
Latest Disclosed Value $ 557,446,011
Marshfield Associates reports 5.65% decrease in ownership of AZO / AutoZone, Inc.

On May 15, 2026 - Marshfield Associates filed a 13F-HR form disclosing ownership of 165,033 shares of AutoZone, Inc. (US:AZO) valued at $557,445,167 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 174,918 shares of AutoZone, Inc.. This represents a change in shares of -5.65% during the quarter. The current value of the position is $505,273,284 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F AUTOZONE COM 053332102 165,033 -9,885 -5.65 557,446 -6.03 11.1647
2026-02-17 2025-12-31 13F AUTOZONE COM 053332102 174,918 2,586 1.50 593,235 -19.76 10.3989
2025-11-14 2025-09-30 13F AUTOZONE COM 053332102 172,332 5,293 3.17 739,347 19.23 12.7942
2025-08-14 2025-06-30 13F AUTOZONE COM 053332102 167,039 -2,770 -1.63 620,089 -4.23 12.6753
2025-05-15 2025-03-31 13F AUTOZONE COM 053332102 169,809 -471 -0.28 647,446 18.75 14.0267
2025-02-14 2024-12-31 13F AUTOZONE COM 053332102 170,280 694 0.41 545,238 2.07 11.8163
2024-11-15 2024-09-30 13F AutoZone COM 053332102 169,586 796 0.47 534,204 6.77 11.3384
2024-08-14 2024-06-30 13F AutoZone COM 053332102 168,790 338 0.20 500,310 -5.76 11.0604
2024-05-15 2024-03-31 13F AutoZone COM 053332102 168,452 -477 -0.28 530,902 21.55 10.8872
2024-02-14 2023-12-31 13F AutoZone COM 053332102 168,929 20,316 13.67 436,785 15.71 8.8685
2023-11-14 2023-09-30 13F AutoZone COM 053332102 148,613 3,948 2.73 377,476 4.65 9.3358
2023-08-14 2023-06-30 13F AutoZone COM 053332102 144,665 7,017 5.10 360,702 6.60 9.3752
2023-05-15 2023-03-31 13F AutoZone COM 053332102 137,648 -147 -0.11 338,359 -0.43 9.9407
2023-02-14 2022-12-31 13F AutoZone COM 053332102 137,795 -87 -0.06 339,827 15.07 10.4834
2022-11-14 2022-09-30 13F AutoZone COM 053332102 137,882 -2,220 -1.58 295,334 -1.91 11.1498
2022-08-12 2022-06-30 13F AutoZone COM 053332102 140,102 -2,855 -2.00 301,096 3.01 11.4071
2022-05-13 2022-03-31 13F AutoZone COM 053332102 142,957 -207 -0.14 292,287 -2.61 11.4945
2022-02-14 2021-12-31 13F Autozone COM 053332102 143,164 -673 -0.47 300,128 22.89 11.9357
2021-11-15 2021-09-30 13F Autozone COM 053332102 143,837 -1,678 -1.15 244,234 12.48 10.7126
2021-08-16 2021-06-30 13F Autozone COM 053332102 145,515 7,105 5.13 217,140 11.72 8.9519
2021-05-17 2021-03-31 13F Autozone COM 053332102 138,410 -1,771 -1.26 194,369 16.97 9.1478
2021-02-16 2020-12-31 13F Autozone COM 053332102 140,181 -5,105 -3.51 166,176 -2.88 7.7747
2020-11-13 2020-09-30 13F Autozone COM 053332102 145,286 -808 -0.55 171,095 3.81 8.2473
2020-08-14 2020-06-30 13F Autozone COM 053332102 146,094 -75 -0.05 164,812 33.28 8.5649
2020-05-15 2020-03-31 13F Autozone COM 053332102 146,169 10,432 7.69 123,659 -23.53 7.6346
2020-02-18 2019-12-31 13F Autozone COM 053332102 135,737 18,166 15.45 161,705 26.81 8.4510
2019-11-15 2019-09-30 13F Autozone COM 053332102 117,571 -1 -0.00 127,520 -1.35 8.0369
2019-08-15 2019-06-30 13F Autozone COM 053332102 117,572 -1,996 -1.67 129,267 5.57 8.2849
2019-05-16 2019-03-31 13F Autozone COM 053332102 119,568 -282 -0.24 122,452 21.87 7.5044
2019-02-15 2018-12-31 13F Autozone COM 053332102 119,850 -2,247 -1.84 100,475 6.09 7.2719
2018-11-16 2018-09-30 13F Autozone COM 053332102 122,097 -3,398 -2.71 94,711 12.49 6.0836
2018-08-15 2018-06-30 13F Autozone COM 053332102 125,495 -481 -0.38 84,198 3.03 5.6004
2018-05-15 2018-03-31 13F Autozone COM 053332102 125,976 -2,084 -1.63 81,719 -10.30 5.4922
2018-02-15 2017-12-31 13F Autozone COM 053332102 128,060 -1,632 -1.26 91,098 18.03 5.9539
2017-11-15 2017-09-30 13F Autozone COM 053332102 129,692 54,749 73.05 77,181 80.53 5.1205
2017-08-15 2017-06-30 13F Autozone COM 053332102 74,943 74,943 42,752 3.1930
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.