Automatic Data Processing, Inc.
US ˙ NasdaqGS ˙ US0530151036

SecurityADP / Automatic Data Processing, Inc.
InstitutionBlue Chip Partners, Inc.
Latest Disclosed Ownership10,453 shares
Latest Disclosed Value $ 2,123,834
Blue Chip Partners, Inc. reports 3.88% decrease in ownership of ADP / Automatic Data Processing, Inc.

On May 15, 2026 - Blue Chip Partners, Inc. filed a 13F-HR form disclosing ownership of 10,453 shares of Automatic Data Processing, Inc. (US:ADP) valued at $2,123,841 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 10,875 shares of Automatic Data Processing, Inc.. This represents a change in shares of -3.88% during the quarter. The current value of the position is $2,417,883 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)
2026-05-15 2026-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 10,453 -422 -3.88 2,124 -24.10 0.1529
2026-02-17 2025-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 10,875 -162 -1.47 2,797 -13.65 0.2029
2025-11-17 2025-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 11,037 -179 -1.60 3,239 -6.36 0.2423
2025-08-15 2025-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 11,216 -12 -0.11 3,459 0.85 0.2818
2025-05-15 2025-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 11,228 -239 -2.08 3,430 2.21 0.2958
2025-01-31 2024-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 11,467 -73 -0.63 3,357 5.10 0.2886
2024-11-04 2024-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 11,540 -815 -6.60 3,193 8.31 0.2774
2024-07-29 2024-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 12,355 31 0.25 2,949 -4.19 0.2724
2024-04-25 2024-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 12,324 -401 -3.15 3,078 3.81 0.2989
2024-02-05 2023-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 12,725 65 0.51 2,965 -2.66 0.3092
2023-10-30 2023-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 12,660 38 0.30 3,046 9.77 0.3630
2023-08-02 2023-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 12,622 83 0.66 2,774 -0.61 0.3153
2023-05-01 2023-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 12,539 -137 -1.08 2,792 -7.80 0.3311
2023-02-01 2022-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 12,676 -594 -4.48 3,028 0.83 0.3767
2022-10-27 2022-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 13,270 -184 -1.37 3,002 6.23 0.4114
2022-08-01 2022-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 13,454 -40 -0.30 2,826 -7.95 0.3603
2022-05-04 2022-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 13,494 -33 -0.24 3,070 -7.95 0.3816
2022-02-08 2021-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 13,527 50 0.37 3,335 23.79 0.4185
2021-11-02 2021-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 13,477 -94 -0.69 2,694 -0.04 0.3784
2021-08-03 2021-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 13,571 -35 -0.26 2,695 5.11 0.3847
2021-05-04 2021-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 13,606 -1,198 -8.09 2,564 -1.72 0.3938
2021-02-05 2020-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 14,804 -975 -6.18 2,609 18.54 0.4085
2020-10-27 2020-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 15,779 -646 -3.93 2,201 -9.98 0.3919
2020-07-30 2020-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 16,425 -819 -4.75 2,445 3.73 0.4792
2020-05-08 2020-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 17,244 -5,009 -22.51 2,357 -37.88 0.5857
2020-02-11 2019-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 22,253 26 0.12 3,794 5.74 0.7216
2019-10-29 2019-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 22,227 -351 -1.55 3,588 -3.88 0.7590
2019-07-31 2019-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 22,578 -607 -2.62 3,733 0.78 0.8366
2019-04-23 2019-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 23,185 -1,394 -5.67 3,704 14.92 0.8770
2019-02-05 2018-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 24,579 -4,023 -14.07 3,223 -25.20 0.8105
2018-10-26 2018-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 28,602 -2,863 -9.10 4,309 2.08 1.0507
2018-07-25 2018-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 31,465 -3,614 -10.30 4,221 6.03 1.1174
2018-04-25 2018-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 35,079 -2,760 -7.29 3,981 -10.22 1.1019
2018-01-31 2017-12-31 13F AUTOMATIC DATA PROCESSIN COM 053015103 37,839 -842 -2.18 4,434 4.85 1.3110
2017-11-07 2017-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 38,681 -1,687 -4.18 4,229 2.25 1.3619
2017-08-07 2017-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 40,368 236 0.59 4,136 0.66 1.4418
2017-05-08 2017-03-31 13F AUTOMATIC DATA PROCESSIN COM 053015103 40,132 -3,365 -7.74 4,109 -8.10 1.5560
2017-02-01 2016-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 43,497 -2,477 -5.39 4,471 10.26 1.7515
2016-11-04 2016-09-30 13F AUTOMATIC DATA PROCESSING I COM 053015103 45,974 -870 -1.86 4,055 -5.79 1.7912
2016-08-19 2016-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 46,844 74 0.16 4,304 2.57 1.9374
2016-05-10 2016-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 46,770 -24 -0.05 4,196 5.85 2.0415
2016-02-02 2015-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 46,794 -285 -0.61 3,964 4.78 2.0648
2015-11-12 2015-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 47,079 456 0.98 3,783 1.12 2.4082
2015-08-04 2015-06-30 13F AUTOMATIC DATA PROCESSING I COM 053015103 46,623 -43 -0.09 3,741 -6.38 2.3928
2015-04-28 2015-03-31 13F Automatic Data Processing COM 053015103 46,666 -1,277 -2.66 3,996 -0.03 2.7073
2015-02-12 2014-12-31 13F Automatic Data Processing COM 053015103 47,943 47,943 3,997 2.7888
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.