O'Reilly Automotive, Inc.
US ˙ NasdaqGS ˙ US67103H1077

SecurityORLY / O'Reilly Automotive, Inc.
InstitutionChicago Capital, LLC
Latest Disclosed Ownership37,800 shares
Latest Disclosed Value $ 3,489,318
Chicago Capital, LLC reports 6.27% decrease in ownership of ORLY / O'Reilly Automotive, Inc.

On April 23, 2026 - Chicago Capital, LLC filed a 13F-HR form disclosing ownership of 37,800 shares of O'Reilly Automotive, Inc. (US:ORLY) valued at $3,489,318 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 40,330 shares of O'Reilly Automotive, Inc.. This represents a change in shares of -6.27% during the quarter. The current value of the position is $3,302,964 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)
2026-04-23 2026-03-31 13F OREILLY AUTOMOTIVE COM 67103H107 37,800 -2,530 -6.27 3,489 -5.14 0.0941
2026-01-26 2025-12-31 13F OREILLY AUTOMOTIVE COM 67103H107 40,330 30 0.07 3,678 -15.33 0.0909
2025-10-22 2025-09-30 13F OREILLY AUTOMOTIVE COM 67103H107 40,300 -230 -0.57 4,345 18.95 0.1069
2025-07-17 2025-06-30 13F OREILLY AUTOMOTIVE COM 67103H107 40,530 37,714 1,339.28 3,653 -9.47 0.0901
2025-04-17 2025-03-31 13F OREILLY AUTOMOTIVE COM 67103H107 2,816 41 1.48 4,034 22.61 0.1139
2025-01-24 2024-12-31 13F OREILLY AUTOMOTIVE COM 67103H107 2,775 0 0.00 3,291 2.97 0.0872
2024-10-18 2024-09-30 13F OREILLY AUTOMOTIVE COM 67103H107 2,775 0 0.00 3,196 9.04 0.0887
2024-08-06 2024-06-30 13F OREILLY AUTOMOTIVE COM 67103H107 2,775 -10 -0.36 2,931 -6.78 0.0871
2024-04-15 2024-03-31 13F OREILLY AUTOMOTIVE COM 67103H107 2,785 -11 -0.39 3,144 18.34 0.0958
2024-01-22 2023-12-31 13F OREILLY AUTOMOTIVE COM 67103H107 2,796 215 8.33 2,656 13.26 0.0957
2023-10-25 2023-09-30 13F OREILLY AUTOMOTIVE COM 67103H107 2,581 0 0.00 2,346 -4.87 0.1097
2023-07-20 2023-06-30 13F OREILLY AUTOMOTIVE COM 67103H107 2,581 0 0.00 2,466 12.51 0.1112
2023-04-18 2023-03-31 13F OREILLY AUTOMOTIVE COM 67103H107 2,581 0 0.00 2,191 0.60 0.1090
2023-01-20 2022-12-31 13F OREILLY AUTOMOTIVE COM 67103H107 2,581 0 0.00 2,178 20.00 0.1205
2022-10-14 2022-09-30 13F OREILLY AUTOMOTIVE COM 67103H107 2,581 0 0.00 1,815 11.28 0.1050
2022-07-21 2022-06-30 13F OREILLY AUTOMOTIVE COM 67103H107 2,581 0 0.00 1,631 -7.75 0.0901
2022-04-21 2022-03-31 13F OREILLY AUTOMOTIVE COM 67103H107 2,581 0 0.00 1,768 -3.02 0.0761
2022-01-20 2021-12-31 13F OREILLY AUTOMOTIVE COM 67103H107 2,581 0 0.00 1,823 15.60 0.0679
2021-10-28 2021-09-30 13F OREILLY AUTOMOTIVE COM 67103H107 2,581 0 0.00 1,577 7.94 0.0598
2021-07-22 2021-06-30 13F OREILLY AUTOMOTIVE COM 67103H107 2,581 0 0.00 1,461 11.61 0.0571
2021-04-13 2021-03-31 13F OREILLY AUTOMOTIVE COM 67103H107 2,581 61 2.42 1,309 14.82 0.0552
2021-01-25 2020-12-31 13F OREILLY AUTOMOTIVE COM 67103H107 2,520 0 0.00 1,140 -1.89 0.0509
2020-10-13 2020-09-30 13F OREILLY AUTOMOTIVE COM 67103H107 2,520 0 0.00 1,162 9.31 0.0597
2020-07-29 2020-06-30 13F OREILLY AUTOMOTIVE COM 67103H107 2,520 0 0.00 1,063 40.05 0.0616
2020-04-21 2020-03-31 13F O REILLY AUTOMOTIVE INC COM 67103H107 2,520 0 0.00 759 -31.25 0.0612
2020-01-14 2019-12-31 13F O REILLY AUTOMOTIVE INC COM 67103H107 2,520 0 0.00 1,104 9.96 0.0674
2019-10-28 2019-09-30 13F O'REILLY AUTOMOTIVE COMMON 67103H107 2,520 0 0.00 1,004 7.84 0.0672
2019-07-11 2019-06-30 13F O'REILLY AUTOMOTIVE COMMON 67103H107 2,520 800 46.51 931 39.37 0.0596
2019-04-23 2019-03-31 13F O'REILLY AUTOMOTIVE COMMON 67103H107 1,720 0 0.00 668 12.84 0.0454
2019-02-11 2018-12-31 13F O'REILLY AUTOMOTIVE COM 67103H107 1,720 0 0.00 592 -0.84 0.0483
2018-11-02 2018-09-30 13F O'REILLY AUTOMOTIVE COM 67103H107 1,720 0 0.00 597 26.75 0.0413
2018-07-19 2018-06-30 13F O'REILLY AUTOMOTIVE COM 67103H107 1,720 0 0.00 471 10.82 0.0380
2018-05-09 2018-03-31 13F O'Reilly Automotive COM 67103H107 1,720 1,720 425 0.0567
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.