Automatic Data Processing, Inc.
US ˙ NasdaqGS ˙ US0530151036

SecurityADP / Automatic Data Processing, Inc.
InstitutionFundsmith LLP
ManagerTerry Smith
Latest Disclosed Ownership3,855,105 shares
Latest Disclosed Value $ 783,280,234
Fundsmith LLP reports 7.73% decrease in ownership of ADP / Automatic Data Processing, Inc.

On May 15, 2026 - Fundsmith LLP filed a 13F-HR form disclosing ownership of 3,855,105 shares of Automatic Data Processing, Inc. (US:ADP) valued at $783,280,234 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 4,177,969 shares of Automatic Data Processing, Inc.. This represents a change in shares of -7.73% during the quarter. The current value of the position is $891,724,338 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 3,855,105 -322,864 -7.73 783,280 -27.12 6.1061
2026-02-17 2025-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 4,177,969 -133,634 -3.10 1,074,699 -15.07 6.2789
2025-11-14 2025-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 4,311,603 -50,496 -1.16 1,265,455 -5.93 6.3927
2025-08-14 2025-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 4,362,099 -151,800 -3.36 1,345,271 -2.46 5.8448
2025-05-15 2025-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 4,513,899 -499,813 -9.97 1,379,132 -6.03 6.2760
2025-02-14 2024-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 5,013,712 -558,108 -10.02 1,467,664 -4.81 6.2565
2024-11-14 2024-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 5,571,820 -13,941 -0.25 1,541,890 15.65 6.0996
2024-08-14 2024-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 5,585,761 -180,108 -3.12 1,333,265 -7.41 5.4331
2024-05-15 2024-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 5,765,869 -50,452 -0.87 1,439,968 6.27 5.6358
2024-02-14 2023-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 5,816,321 295,809 5.36 1,355,028 2.03 5.6724
2023-11-14 2023-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 5,520,512 -5,856 -0.11 1,328,125 9.34 6.0345
2023-08-14 2023-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 5,526,368 -15,598 -0.28 1,214,640 -1.55 5.0964
2023-05-15 2023-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 5,541,966 1,246 0.02 1,233,808 -6.77 5.3240
2023-02-14 2022-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 5,540,720 -30,958 -0.56 1,323,456 5.01 6.0444
2022-11-14 2022-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 5,571,678 6,300 0.11 1,260,258 7.81 5.9822
2022-08-15 2022-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 5,565,378 2,530 0.05 1,168,952 -7.65 5.1577
2022-05-16 2022-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 5,562,848 -1,531,542 -21.59 1,265,770 -27.64 4.3469
2022-02-14 2021-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 7,094,390 -1,744 -0.02 1,749,335 23.31 4.2685
2021-11-12 2021-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 7,096,134 -766 -0.01 1,418,659 0.64 3.9222
2021-08-13 2021-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 7,096,900 -16,705 -0.23 1,409,586 5.14 3.9062
2021-05-14 2021-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 7,113,605 25,988 0.37 1,340,701 7.36 4.2641
2021-02-12 2020-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 7,087,617 167,702 2.42 1,248,838 29.38 4.1394
2020-11-12 2020-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 6,919,915 438,763 6.77 965,259 0.03 3.7707
2020-08-12 2020-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 6,481,152 206,319 3.29 964,979 12.52 4.2107
2020-05-14 2020-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 6,274,833 -189,365 -2.93 857,644 -22.18 4.8267
2020-02-13 2019-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 6,464,198 -16,287 -0.25 1,102,146 5.36 5.2070
2019-11-12 2019-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 6,480,485 350,732 5.72 1,046,080 3.22 5.3471
2019-08-09 2019-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 6,129,753 135,582 2.26 1,013,432 5.84 5.2807
2019-05-13 2019-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 5,994,171 66,480 1.12 957,509 7.22 5.4411
2019-02-14 2018-12-31 13F/A-1 AUTOMATIC DATA PROCESSING COM 053015103 5,927,691 115,156 1.98 893,066 1.98 5.6699
2019-02-14 2018-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 5,863,113 50,578 883,337
2018-11-09 2018-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 5,812,535 26,045 0.45 875,717 12.82 5.8736
2018-08-22 2018-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 5,786,490 8,507 0.15 776,199 18.38 5.7768
2018-04-30 2018-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 5,777,983 254,791 4.61 655,685 1.30 5.4052
2018-02-13 2017-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 5,523,192 -30,045 -0.54 647,263 6.91 5.5487
2017-11-14 2017-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 5,553,237 376,897 7.28 605,414 14.15 5.8621
2017-08-14 2017-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 5,176,340 1,164,972 29.04 530,368 29.13 5.5613
2017-05-05 2017-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 4,011,368 133,125 3.43 410,724 2.36 4.7719
2017-02-13 2016-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 3,878,243 8,577 0.22 401,243 17.56 5.2835
2016-11-14 2016-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 3,869,666 532,875 15.97 341,305 11.34 4.6651
2016-08-12 2016-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 3,336,791 437,236 15.08 306,551 17.85 5.0356
2016-04-27 2016-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 2,899,555 435,403 17.67 260,119 24.60 5.5997
2016-02-16 2015-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 2,464,152 405,573 19.70 208,763 26.20 5.2433
2015-10-20 2015-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 2,058,579 296,017 16.79 165,427 16.98 5.0448
2015-08-17 2015-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 1,762,562 0 0.00 141,410 -6.32 4.4509
2015-06-03 2015-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 1,762,562 112,786 6.84 150,946 9.75 4.8879
2015-02-10 2014-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 1,649,776 57,510 3.61 137,542 18.52 4.9040
2014-11-05 2014-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 1,592,266 20,771 1.32 116,049 -6.85 4.9615
2014-08-11 2014-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 1,571,495 0 0.00 124,588 2.61 5.7496
2014-04-29 2014-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 1,571,495 162,954 11.57 121,414 6.69 6.3700
2014-01-21 2013-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 1,408,541 0 0.00 113,796 11.62 7.0636
2013-11-07 2013-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 1,408,541 0 0.00 101,950 5.11 6.7852
2013-07-19 2013-06-30 13F/A-1 AUTOMATIC DATA PROCESSING COM 053015103 1,408,541 0 0.00 96,992 6.49 6.8163
2013-07-12 2013-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 1,408,541 97,718
2013-06-25 2013-03-31 13F/A-1 AUTOMATIC DATA PROCESSING COMMON STOCK USD.1 053015103 1,408,541 1,408,541 91,083 7.3070
2013-05-24 2013-03-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK USD.1 053015103 13,239 91,083 7.3070
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.