Automatic Data Processing, Inc.
US ˙ NasdaqGS ˙ US0530151036

SecurityADP / Automatic Data Processing, Inc.
InstitutionNorthern Trust Corp
Latest Disclosed Ownership6,000,697 shares
Latest Disclosed Value $ 1,219,221,615
Northern Trust Corp reports 0.10% decrease in ownership of ADP / Automatic Data Processing, Inc.

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 6,000,697 shares of Automatic Data Processing, Inc. (US:ADP) valued at $1,219,221,616 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 6,006,495 shares of Automatic Data Processing, Inc.. This represents a change in shares of -0.10% during the quarter. The current value of the position is $1,388,021,223 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 IN COM 053015103 6,000,697 -5,798 -0.10 1,219,222 -21.09 0.0330
2026-02-17 2025-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 6,006,495 -110,003 -1.80 1,545,051 -13.93 0.1970
2025-11-14 2025-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 6,116,498 11,723 0.19 1,795,192 -4.65 0.2297
2025-08-13 2025-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 6,104,775 -58,151 -0.94 1,882,713 -0.01 0.2589
2025-05-13 2025-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 6,162,926 -11,493 -0.19 1,882,959 4.18 0.2796
2025-02-14 2024-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 6,174,419 902,354 17.12 1,807,438 23.89 0.2559
2024-11-13 2024-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 5,272,065 -110,177 -2.05 1,458,939 13.56 0.2388
2024-08-14 2024-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 5,382,242 -52,169 -0.96 1,284,687 -5.34 0.2165
2024-05-14 2024-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 5,434,411 -218,748 -3.87 1,357,190 3.05 0.2345
2024-02-13 2023-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 5,653,159 -249,361 -4.22 1,317,016 -7.25 0.2384
2023-11-13 2023-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 5,902,520 288,234 5.13 1,420,028 15.08 0.2750
2023-08-11 2023-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 5,614,286 -161,568 -2.80 1,233,964 -4.04 0.2371
2023-05-15 2023-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 5,775,854 -37,952 -0.65 1,285,878 -7.40 0.2549
2023-02-13 2022-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 5,813,806 -6,946 -0.12 1,388,686 5.48 0.2914
2022-11-14 2022-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 5,820,752 -127,440 -2.14 1,316,596 5.38 0.3007
2022-08-12 2022-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 5,948,192 -151,733 -2.49 1,249,358 -9.99 0.2676
2022-05-13 2022-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 6,099,925 -24,425 -0.40 1,387,977 -8.09 0.2442
2022-02-08 2021-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 6,124,350 -111,459 -1.79 1,510,143 21.13 0.2474
2021-11-15 2021-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 6,235,809 94,990 1.55 1,246,662 2.21 0.2207
2021-08-13 2021-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 6,140,819 -35,689 -0.58 1,219,688 4.78 0.2148
2021-05-12 2021-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 6,176,508 24,040 0.39 1,164,086 7.38 0.2165
2021-02-11 2020-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 6,152,468 -144,026 -2.29 1,084,065 23.43 0.2112
2020-11-16 2020-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 6,296,494 -279,417 -4.25 878,298 -10.29 0.1926
2020-08-14 2020-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 6,575,911 84,393 1.30 979,086 10.35 0.2320
2020-05-14 2020-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 6,491,518 -45,932 -0.70 887,261 -20.40 0.2547
2020-02-14 2019-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 6,537,450 131,415 2.05 1,114,634 7.79 0.2495
2019-11-13 2019-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 6,406,035 -232,861 -3.51 1,034,062 -5.79 0.2475
2019-08-13 2019-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 6,638,896 -54,011 -0.81 1,097,608 2.66 0.2604
2019-05-13 2019-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 6,692,907 86,449 1.31 1,069,125 23.42 0.2641
2019-02-12 2018-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 6,606,458 170,243 2.65 866,239 -10.67 0.2430
2018-11-14 2018-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 6,436,215 -38,163 -0.59 969,680 11.65 0.2373
2018-09-18 2018-06-30 13F/A-1 AUTOMATIC DATA PROCESSING IN COM 053015103 6,474,378 -86,313 -1.32 868,473 16.65 0.2205
2018-08-14 2018-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 6,504,437 -56,254 872,505
2018-05-09 2018-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 6,560,691 -172,765 -2.57 744,507 -5.65 0.1937
2018-02-14 2017-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 6,733,456 -176,807 -2.56 789,094 4.46 0.1998
2017-11-13 2017-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 6,910,263 -5,114 -0.07 755,431 6.62 0.1969
2017-08-11 2017-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 6,915,377 -62,355 -0.89 708,550 -0.83 0.1981
2017-05-12 2017-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 6,977,732 -24,440 -0.35 714,451 -0.73 0.2060
2017-02-13 2016-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 7,002,172 -20,707 -0.29 719,683 16.19 0.2207
2016-11-09 2016-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 7,022,879 132,896 1.93 619,419 -2.14 0.1929
2016-08-12 2016-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 6,889,983 40,602 0.59 632,983 3.20 0.2055
2016-08-19 2016-03-31 13F/A-1 AUTOMATIC DATA PROCESSING IN COM 053015103 6,849,381 29,070 0.43 613,331 6.15 0.2034
2016-05-13 2016-03-31 13F Automatic Data Proce COMM 053015103 6,849,356 614,456
2016-02-12 2015-12-31 13F Automatic Data Proce COMM 053015103 6,820,311 -372,618 -5.18 577,817 -0.04 0.1915
2015-11-12 2015-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 7,192,929 8,338 0.12 578,024 0.28 0.1929
2015-08-13 2015-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 7,184,591 -194,059 -2.63 576,420 -8.78 0.3907
2015-08-13 2015-06-30 13F Automatic Data Proce COMM 005301510 105,436 -7,273,214 8,459 0.0057
2015-05-14 2015-03-31 13F Automatic Data Proce COMM 053015103 7,378,650 -89,448 -1.20 631,908 1.49 0.1900
2015-02-12 2014-12-31 13F Automatic Data Proce COM 053015103 7,468,098 72,300 0.98 622,615 1.33 0.1880
2014-11-13 2014-09-30 13F Automatic Data Proce COMM 053015103 7,395,798 -291,367 -3.79 614,443 0.82 0.1930
2014-08-14 2014-06-30 13F AUTOMATIC DATA PROCESSING IN com 053015103 7,687,165 45,355 0.59 609,438 3.22 0.1899
2014-05-14 2014-03-31 13F AUTOMATIC DATA PROCESSING IN COMM 053015103 7,641,810 -317,783 -3.99 590,407 -8.20 0.1857
2014-02-21 2013-12-31 13F/A-1 AUTOMATIC DATA PROCESSING IN COM 053015103 7,959,593 -330,132 -3.98 643,128 7.19 0.2063
2014-02-12 2013-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 7,959,593 643,128
2013-11-13 2013-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 8,289,725 -286,719 -3.34 600,010 1.60 0.2113
2013-08-09 2013-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 8,576,444 8,576,444 590,574 0.2140
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.