Automatic Data Processing, Inc.
US ˙ NasdaqGS ˙ US0530151036

SecurityADP / Automatic Data Processing, Inc.
InstitutionWebster Bank, N. A.
Latest Disclosed Ownership11,596 shares
Latest Disclosed Value $ 2,356,076
Webster Bank, N. A. reports 0.03% increase in ownership of ADP / Automatic Data Processing, Inc.

On April 17, 2026 - Webster Bank, N. A. filed a 13F-HR form disclosing ownership of 11,596 shares of Automatic Data Processing, Inc. (US:ADP) valued at $2,356,075 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 11,592 shares of Automatic Data Processing, Inc.. This represents a change in shares of 0.03% during the quarter. The current value of the position is $2,682,271 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)
2026-04-17 2026-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 11,596 4 0.03 2,356 -20.97 0.2231
2026-01-23 2025-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 11,592 49 0.42 2,982 -11.99 0.2797
2025-10-23 2025-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 11,543 -185 -1.58 3,388 -6.33 0.3258
2025-07-08 2025-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 11,728 188 1.63 3,617 2.58 0.3736
2025-04-04 2025-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 11,540 -46 -0.40 3,526 3.95 0.3875
2025-01-22 2024-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 11,586 -280 -2.36 3,392 3.29 0.3643
2024-10-10 2024-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 11,866 -63 -0.53 3,284 15.31 0.3493
2024-07-12 2024-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 11,929 -289 -2.37 2,847 -6.69 0.3121
2024-04-16 2024-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 12,218 -77 -0.63 3,051 6.53 0.3409
2024-01-23 2023-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 12,295 0 0.00 2,864 -3.15 0.3507
2023-10-10 2023-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 12,295 -400 -3.15 2,958 5.99 0.4001
2023-07-13 2023-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 12,695 -147 -1.14 2,790 -2.41 0.3606
2023-04-13 2023-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 12,842 -677 -5.01 2,859 95,200.00 0.3727
2023-01-18 2022-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 13,519 -530 -3.77 3 -99.91 0.4365
2022-10-24 2022-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 14,049 -62 -0.44 3,177 7.22 0.4604
2022-07-12 2022-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 14,111 -14,153 -50.07 2,963 -53.93 0.4044
2022-04-13 2022-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 28,264 14,110 99.69 6,431 84.27 0.4615
2022-01-12 2021-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 14,154 -23 -0.16 3,490 23.15 0.3614
2021-10-12 2021-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 14,177 -299 -2.07 2,834 -1.46 0.3165
2021-07-20 2021-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 14,476 -96 -0.66 2,876 4.73 0.3147
2021-05-07 2021-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 14,572 -60 -0.41 2,746 6.52 0.3128
2021-01-07 2020-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 14,632 0 0.00 2,578 26.31 0.3030
2020-10-22 2020-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 14,632 -600 -3.94 2,041 -10.01 0.2679
2020-07-09 2020-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 15,232 -254 -1.64 2,268 7.13 0.3216
2020-04-21 2020-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 15,486 -92 -0.59 2,117 -20.29 0.3519
2020-01-14 2019-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 15,578 -25 -0.16 2,656 5.48 0.3393
2019-10-01 2019-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 15,603 898 6.11 2,518 3.54 0.3409
2019-07-11 2019-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 14,705 -500 -3.29 2,432 0.12 0.3349
2019-04-10 2019-03-31 13F Automatic Data Processing COM 053015103 15,205 -308 -1.99 2,429 19.42 0.3472
2019-01-09 2018-12-31 13F Automatic Data Processing COM 053015103 15,513 -226 -1.44 2,034 -14.21 0.3284
2018-10-12 2018-09-30 13F Automatic Data Processing COM 053015103 15,739 -150 -0.94 2,371 11.21 0.3304
2018-07-12 2018-06-30 13F Automatic Data Processing COM 053015103 15,889 0 0.00 2,132 18.25 0.3080
2018-04-19 2018-03-31 13F Automatic Data Processing COM 053015103 15,889 -440 -2.69 1,803 -5.80 0.2603
2018-01-23 2017-12-31 13F Automatic Data Processing COM 053015103 16,329 -1,680 -9.33 1,914 -2.79 0.2632
2017-10-12 2017-09-30 13F Automatic Data Processing COM 053015103 18,009 400 2.27 1,969 9.15 0.2862
2017-07-12 2017-06-30 13F Automatic Data Processing COM 053015103 17,609 0 0.00 1,804 0.06 0.2670
2017-05-01 2017-03-31 13F Automatic Data Processing COM 053015103 17,609 925 5.54 1,803 5.13 0.2719
2017-02-15 2016-12-31 13F Automatic Data Processing COM 053015103 16,684 168 1.02 1,715 17.79 0.2507
2016-10-14 2016-09-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 16,516 -1,560 -8.63 1,456 -12.29 0.2119
2016-07-11 2016-06-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 18,076 -586 -3.14 1,660 -0.84 0.2434
2016-04-12 2016-03-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 18,662 1,267 7.28 1,674 13.57 0.2613
2016-01-13 2015-12-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 17,395 7,495 75.71 1,474 85.41 0.2365
2015-11-12 2015-09-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 9,900 -300 -2.94 795 -2.93 0.1465
2015-07-09 2015-06-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 10,200 -340 -3.23 819 -9.30 0.1371
2015-04-30 2015-03-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 10,540 -860 -7.54 903 -4.95 0.1493
2015-01-15 2014-12-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 11,400 -3,460 -23.28 950 -23.01 0.1593
2014-10-15 2014-09-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 14,860 -1,250 -7.76 1,234 -3.44 0.2182
2014-07-09 2014-06-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 16,110 -17,609 -52.22 1,278 -50.94 0.2205
2014-04-11 2014-03-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 33,719 -325 -0.95 2,605 -5.31 0.3599
2014-01-28 2013-12-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 34,044 375 1.11 2,751 12.93 0.3851
2013-11-05 2013-09-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 33,669 -95 -0.28 2,436 4.77 0.3750
2013-08-06 2013-06-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 33,764 33,764 2,325 0.2932
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.