Automatic Data Processing, Inc.
US ˙ NasdaqGS ˙ US0530151036

SecurityADP / Automatic Data Processing, Inc.
InstitutionHm Payson & Co
Latest Disclosed Ownership41,562 shares
Latest Disclosed Value $ 8,444,568
Hm Payson & Co reports 0.22% decrease in ownership of ADP / Automatic Data Processing, Inc.

On April 13, 2026 - Hm Payson & Co filed a 13F-HR form disclosing ownership of 41,562 shares of Automatic Data Processing, Inc. (US:ADP) valued at $8,444,567 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 41,655 shares of Automatic Data Processing, Inc.. This represents a change in shares of -0.22% during the quarter. The current value of the position is $9,465,746 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)
2026-04-13 2026-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 41,562 -93 -0.22 8,445 -21.19 0.0633
2026-02-12 2025-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 41,655 -193 -0.46 10,715 -12.77 0.1511
2025-10-17 2025-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 41,848 -175 -0.42 12,282 -5.22 0.1766
2025-10-17 2025-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 42,023 -49 -0.12 12,960 0.82 0.2052
2025-04-29 2025-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 42,072 -323 -0.76 12,854 3.58 0.2256
2025-02-07 2024-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 42,395 1,035 2.50 12,410 8.43 0.2105
2024-10-28 2024-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 41,360 105 0.25 11,446 16.23 0.1963
2024-08-13 2024-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 41,255 -2 -0.00 9,847 -4.43 0.1789
2024-06-20 2024-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 41,257 -10 -0.02 10,304 7.18 0.1915
2024-02-13 2023-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 41,267 -655 -1.56 9,614 -4.68 0.1991
2023-11-06 2023-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 41,922 111 0.27 10,086 9.75 0.2364
2023-07-17 2023-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 41,811 -2,334 -5.29 9,190 -6.50 0.2063
2023-04-18 2023-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 44,145 -213 -0.48 9,828 -7.24 0.2357
2023-02-06 2022-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 44,358 -454 -1.01 10,595 4.53 0.2639
2022-10-25 2022-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 44,812 65 0.15 10,136 7.84 0.2783
2022-08-15 2022-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 44,747 -2,100 -4.48 9,399 -11.83 0.2410
2022-05-12 2022-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 46,847 -58 -0.12 10,660 -7.83 0.2426
2022-02-15 2021-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 46,905 -1,829 -3.75 11,566 18.71 0.2514
2021-11-30 2021-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 48,734 39 0.08 9,743 0.73 0.2372
2021-08-17 2021-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 48,695 -605 -1.23 9,672 4.09 0.2358
2021-06-15 2021-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 49,300 -103 -0.21 9,292 6.74 0.2474
2021-03-10 2020-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 49,403 -2,000 -3.89 8,705 21.41 0.2406
2020-12-21 2020-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 51,403 -650 -1.25 7,170 -7.48 0.2208
2020-08-13 2020-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 52,053 -383 -0.73 7,750 8.13 0.2599
2020-07-01 2020-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 52,436 -2,717 -4.93 7,167 -23.79 0.2816
2020-02-18 2019-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 55,153 -517 -0.93 9,404 4.65 0.3021
2019-11-12 2019-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 55,670 1,138 2.09 8,986 -0.33 0.3165
2019-08-15 2019-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 54,532 282 0.52 9,016 4.04 0.3234
2019-07-31 2019-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 54,250 54,250 8,666 0.3312
2019-02-15 2018-12-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 0 -50,177 -100.00 0 -100.00
2018-11-30 2018-09-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 50,177 -1,038 -2.03 7,560 10.04 0.3384
2018-08-27 2018-06-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 51,215 1,037 2.07 6,870 20.65 0.2936
2018-05-14 2018-03-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 50,178 14 0.03 5,694 -3.15 0.2349
2018-02-16 2017-12-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 50,164 1,575 3.24 5,879 10.67 0.2363
2017-11-06 2017-09-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 48,589 2,609 5.67 5,312 12.76 0.2284
2017-08-04 2017-06-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 45,980 69 0.15 4,711 0.21 0.2123
2017-05-25 2017-03-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 45,911 510 1.12 4,701 0.75 0.2144
2017-02-15 2016-12-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 45,401 -390 -0.85 4,666 15.52 0.2223
2016-11-14 2016-09-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 45,791 0 0.00 4,039 -3.97 0.1970
2016-08-08 2016-06-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 45,791 99 0.22 4,206 2.61 0.2100
2016-05-19 2016-03-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 45,692 3,081 7.23 4,099 13.55 0.2131
2016-02-23 2015-12-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 42,611 1,582 3.86 3,610 9.49 0.1856
2015-11-02 2015-09-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 41,029 -1,726 -4.04 3,297 -3.88 0.1787
2015-08-11 2015-06-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 42,755 -790 -1.81 3,430 -8.02 0.1707
2015-05-06 2015-03-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 43,545 -156 -0.36 3,729 2.36 0.1864
2015-02-10 2014-12-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 43,701 306 0.71 3,643 1.05 0.1803
2014-11-12 2014-09-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 43,395 -75 -0.17 3,605 4.58 0.1847
2014-08-13 2014-06-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 43,470 -124 -0.28 3,447 2.35 0.1771
2014-05-07 2014-03-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 43,594 914 2.14 3,368 -2.35 0.1783
2014-02-10 2013-12-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 42,680 -450 -1.04 3,449 10.51 0.1848
2013-11-13 2013-09-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 43,130 -100 -0.23 3,121 4.84 0.1810
2013-08-13 2013-06-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 43,230 43,230 2,977 0.1787
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.