Automatic Data Processing, Inc.
US ˙ NasdaqGS ˙ US0530151036

SecurityADP / Automatic Data Processing, Inc.
InstitutionSlateStone Wealth, LLC
Latest Disclosed Ownership42,194 shares
Latest Disclosed Value $ 8,573
SlateStone Wealth, LLC reports 5.11% increase in ownership of ADP / Automatic Data Processing, Inc.

On May 14, 2026 - SlateStone Wealth, LLC filed a 13F-HR form disclosing ownership of 42,194 shares of Automatic Data Processing, Inc. (US:ADP) valued at $8,572,977 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 40,143 shares of Automatic Data Processing, Inc.. This represents a change in shares of 5.11% during the quarter. The current value of the position is $9,609,684 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)
2026-05-14 2026-03-31 13F Automatic Data Processing COM 053015103 42,194 2,051 5.11 9 -20.00 0.7067
2026-02-11 2025-12-31 13F Automatic Data Processing COM 053015103 40,143 513 1.29 10 -9.09 0.8641
2025-11-05 2025-09-30 13F Automatic Data Processing COM 053015103 39,630 395 1.01 12 -8.33 1.0068
2025-08-12 2025-06-30 13F Automatic Data Processing COM 053015103 39,235 126 0.32 12 9.09 1.1313
2025-05-08 2025-03-31 13F Automatic Data Processing COM 053015103 39,109 -4,511 -10.34 12 -8.33 1.1993
2025-02-10 2024-12-31 13F Automatic Data Processing COM 053015103 43,620 457 1.06 13 9.09 1.2525
2024-11-07 2024-09-30 13F Automatic Data Processing COM 053015103 43,163 11,997 38.49 12 57.14 1.0755
2024-07-25 2024-06-30 13F Automatic Data Processing COM 053015103 31,166 -8,603 -21.63 7 -22.22 0.8061
2024-04-26 2024-03-31 13F Automatic Data Processing COM 053015103 39,769 15,863 66.36 10 80.00 0.9973
2024-02-01 2023-12-31 13F Automatic Data Processing COM 053015103 23,906 1,676 7.54 6 0.00 0.7228
2023-10-12 2023-09-30 13F Automatic Data Processing COM 053015103 22,230 19,961 879.73 5 0.7778
2023-08-07 2023-06-30 13F Automatic Data Processing COM 053015103 2,269 -5,394 -70.39 0 -100.00 0.0935
2023-08-08 2023-03-31 13F Automatic Data Processing COM 053015103 7,663 -373 -4.64 2 -99.95 0.3533
2023-02-01 2022-12-31 13F Automatic Data Processing COM 053015103 8,036 1,299 19.28 1,919 25.92 0.4631
2022-11-03 2022-09-30 13F Automatic Data Processing COM 053015103 6,737 53 0.79 1,524 8.55 0.4055
2022-08-04 2022-06-30 13F Automatic Data Processing COM 053015103 6,684 -1,978 -22.84 1,404 -28.77 0.3587
2022-05-04 2022-03-31 13F Automatic Data Processing COM 053015103 8,662 522 6.41 1,971 -1.79 0.4395
2022-02-02 2021-12-31 13F Automatic Data Processing COM 053015103 8,140 0 0.00 2,007 23.36 0.4288
2021-10-28 2021-09-30 13F Automatic Data Processing COM 053015103 8,140 -1,115 -12.05 1,627 -11.48 0.3725
2021-08-02 2021-06-30 13F Automatic Data Processing COM 053015103 9,255 -300 -3.14 1,838 2.05 0.4202
2021-04-19 2021-03-31 13F Automatic Data Processing COM 053015103 9,555 565 6.28 1,801 13.70 0.4450
2021-01-25 2020-12-31 13F Automatic Data Processing COM 053015103 8,990 0 0.00 1,584 26.32 0.3950
2020-10-27 2020-09-30 13F Automatic Data Processing COM 053015103 8,990 -9 -0.10 1,254 -6.42 0.2707
2020-07-29 2020-06-30 13F Automatic Data Processing COM 053015103 8,999 -716 -7.37 1,340 0.90 0.2995
2020-04-28 2020-03-31 13F Automatic Data Processing COM 053015103 9,715 -275 -2.75 1,328 -22.02 0.3778
2020-02-06 2019-12-31 13F Automatic Data Processing COM 053015103 9,990 -1,035 -9.39 1,703 -4.33 0.3894
2019-11-05 2019-09-30 13F Automatic Data Processing COM 053015103 11,025 -1,305 -10.58 1,780 -12.70 0.5197
2019-08-05 2019-06-30 13F Automatic Data Processing COM 053015103 12,330 -150 -1.20 2,039 2.26 0.5742
2019-05-06 2019-03-31 13F Automatic Data Processing COM 053015103 12,480 9,055 264.38 1,994 344.10 0.6123
2019-02-13 2018-12-31 13F Automatic Data Processing COM 053015103 3,425 3,425 449 0.2065
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.