Automatic Data Processing, Inc.
US ˙ NasdaqGS ˙ US0530151036

SecurityADP / Automatic Data Processing, Inc.
InstitutionGraybill Bartz & Assoc Ltd
Latest Disclosed Ownership30,036 shares
Latest Disclosed Value $ 6,102,659
Graybill Bartz & Assoc Ltd reports 1.60% increase in ownership of ADP / Automatic Data Processing, Inc.

On May 13, 2026 - Graybill Bartz & Assoc Ltd filed a 13F-HR form disclosing ownership of 30,036 shares of Automatic Data Processing, Inc. (US:ADP) valued at $6,102,714 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 29,563 shares of Automatic Data Processing, Inc.. This represents a change in shares of 1.60% during the quarter. The current value of the position is $6,947,627 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)
2026-05-13 2026-03-31 13F AUTOMATIC DATA PROCESSING Stock 053015103 30,036 473 1.60 6,103 -19.75 1.8533
2026-02-13 2025-12-31 13F AUTOMATIC DATA PROCESSING Stock 053015103 29,563 1,503 5.36 7,604 -7.66 2.2437
2025-11-24 2025-09-30 13F AUTOMATIC DATA PROCESSING Stock 053015103 28,060 166 0.60 8,235 -4.27 2.5317
2025-07-31 2025-06-30 13F AUTOMATIC DATA PROCESSING Stock 053015103 27,894 471 1.72 8,603 2.67 2.8091
2025-05-02 2025-03-31 13F AUTOMATIC DATA PROCESSING Stock 053015103 27,423 3,953 16.84 8,379 29.01 2.8745
2024-10-21 2024-09-30 13F AUTOMATIC DATA PROCESSING Stock 053015103 23,470 -246 -1.04 6,495 14.73 2.4072
2024-07-22 2024-06-30 13F AUTOMATIC DATA PROCESSING Stock 053015103 23,716 133 0.56 5,661 -3.89 2.2975
2024-04-15 2024-03-31 13F AUTOMATIC DATA PROCESSING Stock 053015103 23,583 358 1.54 5,890 8.85 2.4816
2024-02-08 2023-12-31 13F AUTOMATIC DATA PROCESSING Stock 053015103 23,225 -150 -0.64 5,411 -3.79 2.3953
2023-11-03 2023-09-30 13F AUTOMATIC DATA PROCESSING Stock 053015103 23,375 -180 -0.76 5,624 8.62 2.7437
2023-07-21 2023-06-30 13F AUTOMATIC DATA PROCESSING Stock 053015103 23,555 89 0.38 5,177 -0.90 2.4584
2023-04-27 2023-03-31 13F AUTOMATIC DATA PROCESSING Stock 053015103 23,466 650 2.85 5,224 -4.13 2.6610
2023-01-23 2022-12-31 13F AUTOMATIC DATA PROCESSING Stock 053015103 22,816 -35 -0.15 5,450 5.42 2.9514
2022-10-28 2022-09-30 13F AUTOMATIC DATA PROCESSING Stock 053015103 22,851 -537 -2.30 5,169 5.23 3.0703
2022-07-29 2022-06-30 13F AUTOMATIC DATA PROCESSING Stock 053015103 23,388 -199 -0.84 4,912 -8.48 2.7197
2022-05-12 2022-03-31 13F AUTOMATIC DATA PROCESSING Stock 053015103 23,587 267 1.14 5,367 -6.66 2.6174
2022-01-28 2021-12-31 13F AUTOMATIC DATA PROCESSING Stock 053015103 23,320 -170 -0.72 5,750 22.44 2.6072
2021-10-22 2021-09-30 13F AUTOMATIC DATA PROCESSING INC COM Stock 053015103 23,490 194 0.83 4,696 1.49 2.3118
2021-07-27 2021-06-30 13F Automatic Data Processing COM 053015103 23,296 -28 -0.12 4,627 5.25 2.2811
2021-04-19 2021-03-31 13F Automatic Data Processing COM 053015103 23,324 176 0.76 4,396 7.77 2.3285
2021-01-20 2020-12-31 13F Automatic Data Processing COM 053015103 23,148 -86 -0.37 4,079 25.86 2.3010
2020-10-19 2020-09-30 13F Automatic Data Processing COM 053015103 23,234 8,133 53.86 3,241 44.17 2.1111
2020-07-20 2020-06-30 13F Automatic Data Processing COM 053015103 15,101 15,101 2,248 1.6541
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.