Automatic Data Processing, Inc.
US ˙ NasdaqGS ˙ US0530151036

SecurityADP / Automatic Data Processing, Inc.
InstitutionPlimoth Trust Co Llc
Latest Disclosed Ownership3,726 shares
Latest Disclosed Value $ 757,049
Plimoth Trust Co Llc reports 7.66% increase in ownership of ADP / Automatic Data Processing, Inc.

On April 27, 2026 - Plimoth Trust Co Llc filed a 13F-HR form disclosing ownership of 3,726 shares of Automatic Data Processing, Inc. (US:ADP) valued at $757,049 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 27, 2026 disclosing 3,461 shares of Automatic Data Processing, Inc.. This represents a change in shares of 7.66% during the quarter. The current value of the position is $861,861 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)
2026-04-27 2026-03-31 13F Automatic Data Processing Com 053015103 3,726 265 7.66 757 -14.94 0.1692
2026-01-27 2025-12-31 13F Automatic Data Processing Com 053015103 3,461 -305 -8.10 890 -19.46 0.1984
2025-10-17 2025-09-30 13F Automatic Data Processing Com 053015103 3,766 -205 -5.16 1,105 -9.72 0.2503
2025-07-22 2025-06-30 13F Automatic Data Processing Com 053015103 3,971 -32 -0.80 1,225 0.08 0.2937
2025-04-21 2025-03-31 13F Automatic Data Processing Com 053015103 4,003 -56 -1.38 1,223 2.95 0.3186
2025-01-23 2024-12-31 13F Automatic Data Processing Com 053015103 4,059 -55 -1.34 1,188 4.39 0.3052
2024-10-21 2024-09-30 13F Automatic Data Processing Com 053015103 4,114 -180 -4.19 1,138 11.13 0.2868
2024-07-23 2024-06-30 13F Automatic Data Processing Com 053015103 4,294 0 0.00 1,025 -4.48 0.2735
2024-04-18 2024-03-31 13F Automatic Data Processing Com 053015103 4,294 -70 -1.60 1,072 5.51 0.2857
2024-01-26 2023-12-31 13F Automatic Data Processing Com 053015103 4,364 -315 -6.73 1,017 -9.69 0.2934
2023-10-20 2023-09-30 13F Automatic Data Processing Com 053015103 4,679 -320 -6.40 1,126 2.46 0.3525
2023-07-24 2023-06-30 13F Automatic Data Processing Com 053015103 4,999 -435 -8.01 1,099 -9.18 0.3287
2023-04-26 2023-03-31 13F Automatic Data Processing Com 053015103 5,434 -165 -2.95 1,210 120,800.00 0.3754
2023-01-19 2022-12-31 13F Automatic Data Processing Com 053015103 5,599 -20 -0.36 1 -99.92 0.4312
2022-10-18 2022-09-30 13F Automatic Data Processing Com 053015103 5,619 -205 -3.52 1,271 3.92 0.4393
2022-07-15 2022-06-30 13F Automatic Data Processing Com 053015103 5,824 -595 -9.27 1,223 -16.23 0.3858
2022-04-25 2022-03-31 13F Automatic Data Processing Com 053015103 6,419 -265 -3.96 1,460 -11.41 0.3879
2022-01-27 2021-12-31 13F Automatic Data Processing Com 053015103 6,684 -10 -0.15 1,648 23.17 0.4179
2021-10-22 2021-09-30 13F Automatic Data Processing Com 053015103 6,694 -37 -0.55 1,338 0.07 0.3783
2021-07-20 2021-06-30 13F Automatic Data Processing Com 053015103 6,731 -330 -4.67 1,337 0.45 0.3753
2021-04-14 2021-03-31 13F Automatic Data Processing Com 053015103 7,061 -294 -4.00 1,331 2.70 0.3928
2021-01-22 2020-12-31 13F Automatic Data Processing Com 053015103 7,355 -762 -9.39 1,296 14.49 0.4047
2020-10-27 2020-09-30 13F Automatic Data Processing Com 053015103 8,117 -45 -0.55 1,132 -6.83 0.3796
2020-07-20 2020-06-30 13F Automatic Data Processing Com 053015103 8,162 -303 -3.58 1,215 5.01 0.4321
2020-04-22 2020-03-31 13F Automatic Data Processing Com 053015103 8,465 -25 -0.29 1,157 -20.04 0.4852
2020-01-29 2019-12-31 13F Automatic Data Processing Com 053015103 8,490 -245 -2.80 1,447 2.62 0.4680
2019-10-28 2019-09-30 13F Automatic Data Processing Com 053015103 8,735 -275 -3.05 1,410 -5.31 0.4623
2019-08-05 2019-06-30 13F Automatic Data Processing Com 053015103 9,010 -201 -2.18 1,489 1.22 0.4900
2019-04-19 2019-03-31 13F Automatic Data Processing Com 053015103 9,211 125 1.38 1,471 23.41 0.4893
2019-01-25 2018-12-31 13F Automatic Data Processing Com 053015103 9,086 -61 -0.67 1,192 -13.50 0.4395
2018-12-13 2018-09-30 13F Automatic Data Processing Com 053015103 9,147 -35 -0.38 1,378 11.94 0.4466
2018-12-12 2018-06-30 13F Automatic Data Processing Com 053015103 9,182 -315 -3.32 1,231 14.30 0.4218
2018-12-21 2018-03-31 13F Automatic Data Processing Com 053015103 9,497 -239 -2.45 1,077 -5.61 0.3720
2018-12-26 2017-12-31 13F Automatic Data Processing Com 053015103 9,736 9,736 1,141 0.4087
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.