Automatic Data Processing, Inc.
US ˙ NasdaqGS ˙ US0530151036

SecurityADP / Automatic Data Processing, Inc.
InstitutionWelch Group, LLC
Latest Disclosed Ownership1,927 shares
Latest Disclosed Value $ 391,547
Welch Group, LLC reports 1.13% decrease in ownership of ADP / Automatic Data Processing, Inc.

On April 21, 2026 - Welch Group, LLC filed a 13F-HR form disclosing ownership of 1,927 shares of Automatic Data Processing, Inc. (US:ADP) valued at $391,528 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 1,949 shares of Automatic Data Processing, Inc.. This represents a change in shares of -1.13% during the quarter. The current value of the position is $446,968 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)
2026-04-21 2026-03-31 13F AUTOMATIC DATA PROCESSING IN COMMON 053015103 1,927 -22 -1.13 392 -21.96 0.0147
2026-01-26 2025-12-31 13F AUTOMATIC DATA PROCESSING IN COMMON STOCK 053015103 1,949 37 1.94 501 -10.70 0.0193
2025-10-14 2025-09-30 13F AUTOMATIC DATA PROCESSING IN COMMON 053015103 1,912 364 23.51 561 17.61 0.0219
2025-07-25 2025-06-30 13F AUTOMATIC DATA PROCESSING IN COMMON 053015103 1,548 2 0.13 477 2.58 0.0200
2025-04-08 2025-03-31 13F AUTOMATIC DATA PROCESSING IN COMMON 053015103 1,546 0 0.00 465 2.88 0.0205
2025-01-27 2024-12-31 13F AUTOMATIC DATA PROCESSING IN COMMON 053015103 1,546 -163 -9.54 453 -4.24 0.0204
2024-10-24 2024-09-30 13F AUTOMATIC DATA PROCESSING IN COMMON 053015103 1,709 0 0.00 473 15.97 0.0206
2024-07-17 2024-06-30 13F AUTOMATIC DATA PROCESSING IN COMMON 053015103 1,709 0 0.00 408 -4.46 0.0196
2024-04-09 2024-03-31 13F AUTOMATIC DATA PROCESSING IN COMMON 053015103 1,709 -2 -0.12 427 7.04 0.0212
2024-01-23 2023-12-31 13F AUTOMATIC DATA PROCESSING IN Common 053015103 1,711 2 0.12 399 -3.16 0.0215
2023-10-18 2023-09-30 13F AUTOMATIC DATA PROCESSING IN Common 053015103 1,709 0 0.00 411 9.60 0.0244
2023-07-18 2023-06-30 13F AUTOMATIC DATA PROCESSING IN Common 053015103 1,709 -150 -8.07 376 -9.20 0.0215
2023-04-13 2023-03-31 13F AUTOMATIC DATA PROCESSING IN Common 053015103 1,859 0 0.00 414 -6.98 0.0241
2023-01-30 2022-12-31 13F AUTOMATIC DATA PROCESSING IN Common 053015103 1,859 0 0.00 444 5.71 0.0254
2022-10-13 2022-09-30 13F AUTOMATIC DATA PROCESSING IN COMMON 053015103 1,859 0 0.00 420 7.69 0.0273
2022-07-21 2022-06-30 13F AUTOMATIC DATA PROCESSING IN COMMON 053015103 1,859 0 0.00 390 -7.80 0.0238
2022-04-29 2022-03-31 13F AUTOMATIC DATA PROCESSING IN COMMON 053015103 1,859 0 0.00 423 -7.64 0.0241
2022-01-26 2021-12-31 13F AUTOMATIC DATA PROCESSING IN COMMON 053015103 1,859 -149 -7.42 458 14.21 0.0268
2021-11-05 2021-09-30 13F AUTOMATIC DATA PROCESSING IN COMMON 053015103 2,008 0 0.00 401 0.50 0.0271
2021-07-21 2021-06-30 13F AUTOMATIC DATA PROCESSING IN COMMON 053015103 2,008 165 8.95 399 14.99 0.0272
2021-04-23 2021-03-31 13F AUTOMATIC DATA PROCESSING IN COMMON 053015103 1,843 320 21.01 347 29.48 0.0250
2021-01-25 2020-12-31 13F AUTOMATIC DATA PROCESSING IN Common 053015103 1,523 0 0.00 268 26.42 0.0215
2020-10-28 2020-09-30 13F AUTOMATIC DATA PROCESSING IN Common 053015103 1,523 0 0.00 212 -6.61 0.0185
2020-07-22 2020-06-30 13F AUTOMATIC DATA PROCESSING IN Common 053015103 1,523 0 0.00 227 9.13 0.0212
2020-04-28 2020-03-31 13F AUTOMATIC DATA PROCESSING IN Common 053015103 1,523 -218 -12.52 208 -29.97 0.0222
2020-01-24 2019-12-31 13F Auto Data Processing Common 053015103 1,741 0 0.00 297 5.69 0.0292
2019-11-05 2019-09-30 13F Auto Data Processing Common 053015103 1,741 -122 -6.55 281 -8.77 0.0289
2019-07-11 2019-06-30 13F Auto Data Processing Common 053015103 1,863 0 0.00 308 3.36 0.0329
2019-04-15 2019-03-31 13F Auto Data Processing Common 053015103 1,863 121 6.95 298 30.70 0.0328
2019-01-10 2018-12-31 13F Auto Data Processing Common 053015103 1,742 0 0.00 228 -12.98 0.0279
2018-11-01 2018-09-30 13F Auto Data Processing Common 053015103 1,742 -38 -2.13 262 9.62 0.0273
2018-07-30 2018-06-30 13F Auto Data Processing Common 053015103 1,780 -63 -3.42 239 14.35 0.0298
2018-04-23 2018-03-31 13F Auto Data Processing Common 053015103 1,843 63 3.54 209 0.00 0.0265
2018-02-01 2017-12-31 13F Auto Data Processing Common 053015103 1,780 149 9.14 209 17.42 0.0324
2017-11-07 2017-09-30 13F Auto Data Processing Common 053015103 1,631 0 0.00 178 6.59 0.0298
2017-08-07 2017-06-30 13F Auto Data Processing Common 053015103 1,631 -472 -22.44 167 -22.33 0.0279
2017-05-01 2017-03-31 13F Auto Data Processing Common 053015103 2,103 0 0.00 215 -0.46 0.0405
2017-02-09 2016-12-31 13F Auto Data Processing Common 053015103 2,103 567 36.91 216 60.00 0.0422
2016-10-28 2016-09-30 13F Auto Data Processing Common 053015103 1,536 0 0.00 135 -4.26 0.0268
2016-07-27 2016-06-30 13F Auto Data Processing Common 053015103 1,536 0 0.00 141 2.17 0.0287
2016-05-05 2016-03-31 13F Auto Data Processing Common 053015103 1,536 0 0.00 138 6.15 0.0230
2016-01-21 2015-12-31 13F Auto Data Processing Common 053015103 1,536 -333 -17.82 130 -13.33 0.0233
2015-10-23 2015-09-30 13F Auto Data Processing COM 053015103 1,869 1,869 150 0.0290
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.