Automatic Data Processing, Inc.
US ˙ NasdaqGS ˙ US0530151036

SecurityADP / Automatic Data Processing, Inc.
InstitutionAviva Plc
Latest Disclosed Ownership864,393 shares
Latest Disclosed Value $ 175,627,370
Aviva Plc reports 4.90% decrease in ownership of ADP / Automatic Data Processing, Inc.

On May 14, 2026 - Aviva Plc filed a 13F-HR form disclosing ownership of 864,393 shares of Automatic Data Processing, Inc. (US:ADP) valued at $175,627,370 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 908,883 shares of Automatic Data Processing, Inc.. This represents a change in shares of -4.90% during the quarter. The current value of the position is $199,942,745 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)
2026-05-14 2026-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 864,393 -44,490 -4.90 175,627 -24.88 0.2946
2026-02-12 2025-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 908,883 -790 -0.09 233,792 -12.43 0.3942
2025-11-13 2025-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 909,673 -49,058 -5.12 266,989 -9.70 0.4852
2025-08-07 2025-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 958,731 -38,580 -3.87 295,673 -2.97 0.6106
2025-05-15 2025-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 997,311 34,501 3.58 304,708 8.11 0.7352
2025-02-13 2024-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 962,810 26,141 2.79 281,843 8.73 0.7320
2024-11-14 2024-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 936,669 72,083 8.34 259,204 25.60 0.6716
2024-08-02 2024-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 864,586 90,970 11.76 206,368 6.81 0.5721
2024-05-14 2024-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 773,616 13,682 1.80 193,203 9.13 0.6361
2024-02-09 2023-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 759,934 383,046 101.63 177,042 95.26 0.6347
2023-11-13 2023-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 376,888 153,486 68.70 90,672 84.66 0.3813
2023-08-10 2023-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 223,402 27,993 14.33 49,102 12.87 0.2000
2023-05-12 2023-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 195,409 3,159 1.64 43,504 -5.26 0.1970
2023-02-14 2022-12-31 13F/A-2 AUTOMATIC DATA PROCESSING COM 053015103 192,250 36,791 23.67 45,921 30.59 0.2258
2023-02-10 2022-12-31 13F/A-1 AUTOMATIC DATA PROCESSING COM 053015103 192,250 36,791 2,984 0.0142
2023-02-09 2022-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 192,250 36,791 46 0.2206
2022-11-14 2022-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 155,459 3,393 2.23 35,163 10.09 0.2027
2022-08-04 2022-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 152,066 15,338 11.22 31,940 2.66 0.1699
2022-05-13 2022-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 136,728 627 0.46 31,111 -7.30 0.1555
2022-02-10 2021-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 136,101 -18,369 -11.89 33,560 8.67 0.1407
2021-11-12 2021-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 154,470 -3,019 -1.92 30,882 -1.27 0.1377
2021-08-10 2021-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 157,489 13,513 9.39 31,280 15.28 0.1372
2021-05-13 2021-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 143,976 -1,048 -0.72 27,135 6.19 0.1325
2021-02-10 2020-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 145,024 6,230 4.49 25,553 31.99 0.1329
2020-11-12 2020-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 138,794 -62,719 -31.12 19,360 -35.47 0.1142
2020-08-13 2020-06-30 13F/A-1 AUTOMATIC DATA PROCESSING COM 053015103 201,513 48,435 31.64 30,003 43.40 0.1870
2020-08-13 2020-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 201,513 48,435 30,003 90,831.9493
2020-05-14 2020-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 153,078 61 0.04 20,923 -19.80 0.1533
2020-02-10 2019-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 153,017 -554 -0.36 26,089 5.24 0.1580
2019-11-12 2019-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 153,571 -7,109 -4.42 24,789 -6.69 0.1680
2019-07-30 2019-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 160,680 -4,242 -2.57 26,565 0.84 0.1825
2019-05-14 2019-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 164,922 -1,495 -0.90 26,345 20.73 0.1767
2019-02-12 2018-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 166,417 -47,201 -22.10 21,821 -32.20 0.1627
2018-11-13 2018-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 213,618 -10,658 -4.75 32,184 6.98 0.1765
2018-08-01 2018-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 224,276 -3,830 -1.68 30,084 16.22 0.1776
2018-05-14 2018-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 228,106 -20,908 -8.40 25,885 -11.30 0.1583
2018-02-13 2017-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 249,014 -35,489 -12.47 29,182 -6.17 0.1652
2017-11-13 2017-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 284,503 2,805 1.00 31,102 7.77 0.1674
2017-08-07 2017-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 281,698 2,350 0.84 28,860 0.91 0.1613
2017-05-15 2017-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 279,348 -19,129 -6.41 28,600 -6.78 0.1637
2017-02-13 2016-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 298,477 15,878 5.62 30,680 23.10 0.1833
2016-11-14 2016-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 282,599 6,186 2.24 24,922 -1.86 0.1555
2016-08-05 2016-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 276,413 15,738 6.04 25,394 8.59 0.1740
2016-05-12 2016-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 260,675 -267 -0.10 23,385 5.78 0.1738
2016-02-11 2015-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 260,942 -3,495 -1.32 22,107 4.03 0.1676
2015-11-12 2015-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 264,437 -6,651 -2.45 21,250 -2.29 0.1761
2015-08-06 2015-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 271,088 15,420 6.03 21,749 -0.67 0.1539
2015-05-14 2015-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 255,668 255,668 0.00 21,895 0.1500
2015-02-05 2014-12-31 13F/A-1 AUTOMATIC DATA PROCESSING COM 053015103 0 -199,311 -100.00 0 -100.00
2014-11-13 2014-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 199,311 820 0.41 14,526 -7.69 0.1150
2014-08-13 2014-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 198,491 -1,420 -0.71 15,736 1.88 0.1203
2014-05-14 2014-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 199,911 6,270 3.24 15,445 -1.30 0.1252
2014-02-13 2013-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 193,641 62,242 47.37 15,648 64.53 0.1308
2013-11-13 2013-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 131,399 39,567 43.09 9,511 50.40 0.0834
2013-08-01 2013-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 91,832 91,832 6,324 0.0639
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.