Automatic Data Processing, Inc.
US ˙ NasdaqGS ˙ US0530151036

SecurityADP / Automatic Data Processing, Inc.
InstitutionBoston Trust Walden Corp
Latest Disclosed Ownership409,225 shares
Latest Disclosed Value $ 83,146,335
Boston Trust Walden Corp reports 2.14% decrease in ownership of ADP / Automatic Data Processing, Inc.

On April 24, 2026 - Boston Trust Walden Corp filed a 13F-HR form disclosing ownership of 409,225 shares of Automatic Data Processing, Inc. (US:ADP) valued at $83,146,336 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 28, 2026 disclosing 418,158 shares of Automatic Data Processing, Inc.. This represents a change in shares of -2.14% during the quarter. The current value of the position is $93,200,994 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)
2026-04-24 2026-03-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 409,225 -8,933 -2.14 83,146 -22.70 0.4088
2026-01-28 2025-12-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 418,158 -52,620 -11.18 107,563 -22.15 0.8118
2025-10-17 2025-09-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 470,778 -26,752 -5.38 138,173 -9.95 1.0137
2025-07-28 2025-06-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 497,530 -14,462 -2.82 153,438 -1.91 1.0944
2025-04-21 2025-03-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 511,992 -8,180 -1.57 156,429 2.73 1.1429
2025-01-24 2024-12-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 520,172 -5,440 -1.03 152,270 4.69 1.0685
2024-10-24 2024-09-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 525,612 -6,430 -1.21 145,453 14.54 1.0119
2024-07-19 2024-06-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 532,042 -27,621 -4.94 126,993 -9.14 0.9419
2024-04-22 2024-03-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 559,663 -384 -0.07 139,770 7.12 0.9970
2024-01-24 2023-12-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 560,047 7,111 1.29 130,474 -1.92 0.9843
2023-10-18 2023-09-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 552,936 5,310 0.97 133,025 10.52 1.1148
2023-07-24 2023-06-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 547,626 58,584 11.98 120,363 10.55 0.9871
2023-04-19 2023-03-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 489,042 -18,249 -3.60 108,875 -10.15 0.9397
2023-01-20 2022-12-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 507,291 -5,516 -1.08 121,172 4.47 1.0654
2022-10-19 2022-09-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 512,807 -13,911 -2.64 115,991 4.84 1.1491
2022-07-22 2022-06-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 526,718 -7,161 -1.34 110,632 -8.93 1.0454
2022-04-20 2022-03-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 533,879 -3,513 -0.65 121,479 -8.32 1.0034
2022-01-21 2021-12-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 537,392 -23,777 -4.24 132,510 18.11 1.0640
2021-10-25 2021-09-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 561,169 -23,919 -4.09 112,189 -3.46 0.9934
2021-07-22 2021-06-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 585,088 1,763 0.30 116,210 5.70 1.0332
2021-04-21 2021-03-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 583,325 -107,789 -15.60 109,940 -9.72 1.0646
2021-01-15 2020-12-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 691,114 -746 -0.11 121,775 26.18 1.2991
2020-10-14 2020-09-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 691,860 -237 -0.03 96,507 -6.35 1.2019
2020-07-23 2020-06-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 692,097 -5,489 -0.79 103,046 8.08 1.3914
2020-04-24 2020-03-31 13F/A-1 AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 697,586 6,120 0.89 95,346 -19.13 1.5195
2020-04-21 2020-03-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 697,586 6,120 95,346 845,461.8827
2020-01-10 2019-12-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 691,466 2,878 0.42 117,895 6.07 1.3722
2019-10-21 2019-09-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 688,588 -9,748 -1.40 111,152 -3.73 1.3973
2019-07-25 2019-06-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 698,336 639 0.09 115,456 3.59 1.5024
2019-04-16 2019-03-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 697,697 13,063 1.91 111,450 24.15 1.5173
2019-01-17 2018-12-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 684,634 -9,011 -1.30 89,770 -14.10 1.4283
2018-10-23 2018-09-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 693,645 -2,647 -0.38 104,505 11.89 1.4396
2018-07-25 2018-06-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 696,292 -835 -0.12 93,401 18.06 1.3706
2018-04-13 2018-03-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 697,127 -757 -0.11 79,110 -3.27 1.2003
2018-01-29 2017-12-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 697,884 -4,849 -0.69 81,785 6.46 1.1989
2017-10-13 2017-09-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 702,733 6,791 0.98 76,823 7.74 1.1962
2017-07-19 2017-06-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 695,942 5,655 0.82 71,306 0.89 1.1458
2017-04-24 2017-03-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 690,287 -2,370 -0.34 70,678 -0.72 1.1014
2017-02-07 2016-12-31 13F/A-1 AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 692,657 13,966 2.06 71,191 18.93 1.1223
2017-02-01 2016-12-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 692,657 71,191
2016-10-17 2016-09-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 678,691 26,852 4.12 59,861 -0.04 0.9869
2016-08-09 2016-06-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 651,839 4,021 0.62 59,884 3.04 1.0228
2016-04-19 2016-03-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 647,818 -125 -0.02 58,116 5.87 1.0119
2016-01-21 2015-12-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 647,943 -2,631 -0.40 54,894 5.00 1.0182
2015-10-29 2015-09-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 650,574 934 0.14 52,280 0.31 0.8733
2015-07-17 2015-06-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 649,640 -28,242 -4.17 52,121 -10.22 0.7948
2015-04-15 2015-03-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 677,882 677,882 0.00 58,054 0.8618
2015-01-28 2014-12-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 0 -685,328 -100.00 0 -100.00
2014-10-23 2014-09-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 685,328 -27,350 -3.84 56,937 0.77 0.8793
2014-08-01 2014-06-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 712,678 -14,205 -1.95 56,501 0.61 0.8211
2014-04-11 2014-03-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 726,883 -125 -0.02 56,159 -4.40 0.8342
2014-02-11 2013-12-31 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 727,008 946 0.13 58,741 11.78 0.8570
2013-11-15 2013-09-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 726,062 -5,785 -0.79 52,552 4.28 0.8041
2013-08-08 2013-06-30 13F AUTOMATIC DATA PROCESSING COMMON STOCK 053015103 731,847 731,847 50,395 0.8136
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.