Automatic Data Processing, Inc.
US ˙ NasdaqGS ˙ US0530151036

SecurityADP / Automatic Data Processing, Inc.
InstitutionSei Investments Co
Latest Disclosed Ownership140,840 shares
Latest Disclosed Value $ 36,225,010
Sei Investments Co reports 6.02% decrease in ownership of ADP / Automatic Data Processing, Inc.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 140,840 shares of Automatic Data Processing, Inc. (US:ADP) valued at $36,228,273 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 149,857 shares of Automatic Data Processing, Inc.. This represents a change in shares of -6.02% during the quarter. The current value of the position is $32,076,310 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)
2026-02-13 2025-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 140,840 -9,017 -6.02 36,225 -17.64 0.0358
2025-11-13 2025-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 149,857 972 0.65 43,983 -4.23 0.0473
2025-08-14 2025-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 148,885 25,262 20.43 45,923 21.58 0.0532
2025-05-14 2025-03-31 13F/A-1 AUTOMATIC DATA PROCESSING IN COM 053015103 123,623 -256,069 -67.44 37,772 -66.02 0.0486
2025-05-13 2025-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 382,625 2,933 112,733 0.1226
2025-02-11 2024-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 379,692 286,813 308.80 111,151 332.52 0.1427
2024-11-12 2024-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 92,879 -6,727 -6.75 25,699 8.09 0.0334
2024-08-13 2024-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 99,606 -8,088 -7.51 23,775 -11.62 0.0337
2024-05-07 2024-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 107,694 -12,662 -10.52 26,901 -4.06 0.0394
2024-02-14 2023-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 120,356 -2,574 -2.09 28,039 -5.18 0.0450
2023-11-14 2023-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 122,930 -23,547 -16.08 29,571 -8.16 0.0531
2023-08-11 2023-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 146,477 -32,054 -17.95 32,198 -18.99 0.0562
2023-05-12 2023-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 178,531 -30,931 -14.77 39,748 -20.56 0.0738
2023-02-10 2022-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 209,462 6,513 3.21 50,034 8.99 0.1112
2022-11-14 2022-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 202,949 946 0.47 45,904 8.38 0.1024
2022-08-15 2022-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 202,003 67,780 50.50 42,354 38.72 0.0915
2022-05-13 2022-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 134,223 21,671 19.25 30,532 11.35 0.0614
2022-02-14 2021-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 112,552 6,481 6.11 27,419 29.52 0.0514
2021-11-12 2021-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 106,071 -2,243 -2.07 21,170 -2.07 0.0444
2021-08-06 2021-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 108,314 30,488 39.17 21,617 52.60 0.0479
2021-05-12 2021-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 77,826 1,869 2.46 14,166 5.65 0.0357
2021-02-08 2020-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 75,957 -2,713 -3.45 13,408 22.35 0.0347
2020-12-04 2020-09-30 13F/A-1 AUTOMATIC DATA PROCESSING IN COM 053015103 78,670 -29,441 -27.23 10,959 -31.74 0.0317
2020-11-06 2020-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 88,013 -20,098 12,262 29,524.1697
2020-08-17 2020-06-30 13F/A-1 AUTOMATIC DATA PROCESSING IN COM 053015103 108,111 -119,405 -52.48 16,055 -48.38 0.0498
2020-08-11 2020-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 230,892 3,376 38,431 104,246.1332
2020-05-14 2020-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 227,516 2,166 0.96 31,102 -19.11 0.1142
2020-02-06 2019-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 225,350 -16,028 -6.64 38,451 -0.75 0.1147
2019-11-12 2019-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 241,378 -4,348 -1.77 38,741 -4.41 0.0991
2019-08-14 2019-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 245,726 -9,096 -3.57 40,529 -0.44 0.1324
2019-05-15 2019-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 254,822 -18,696 -6.84 40,709 1.29 0.1367
2019-02-13 2018-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 273,518 20,571 8.13 40,190 5.51 0.1431
2018-11-08 2018-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 252,947 -31,676 -11.13 38,092 -0.23 0.1381
2018-08-03 2018-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 284,623 186,052 188.75 38,180 241.35 0.1298
2018-05-11 2018-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 98,571 -152,715 -60.77 11,185 -61.94 0.0429
2018-02-08 2017-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 251,286 -31,654 -11.19 29,390 -15.40 0.1021
2017-11-06 2017-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 282,940 -7,811 -2.69 34,741 16.62 0.1235
2017-07-31 2017-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 290,751 -7,609 -2.55 29,791 -2.48 0.1188
2017-05-05 2017-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 298,360 30,253 11.28 30,548 19.76 0.1339
2017-02-02 2016-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 268,107 177,202 194.93 25,507 218.12 0.1235
2016-11-04 2016-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 90,905 10,550 13.13 8,018 8.62 0.0407
2016-08-11 2016-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 80,355 13,988 21.08 7,382 23.98 0.0443
2016-05-10 2016-03-31 13F/A-1 AUTOMATIC DATA PROCESSING IN COM 053015103 66,367 -32,396 -32.80 5,954 -28.84 0.0371
2016-02-03 2015-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 98,763 6,799 7.39 8,367 13.22 0.0510
2015-11-02 2015-09-30 13F/A-1 AUTOMATIC DATA PROCESSING IN COM 053015103 91,964 520 0.57 7,390 0.72 0.0678
2015-10-30 2015-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 91,964 7,391
2015-08-07 2015-06-30 13F/A-1 AUTOMATIC DATA PROCESSING IN COM 053015103 91,444 26,671 41.18 7,337 32.29 0.0663
2015-08-04 2015-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 91,444 26,671 7,337 0.0663
2015-05-14 2015-03-31 13F/A-1 AUTOMATIC DATA PROCESSING IN COM 053015103 64,773 11,607 21.83 5,546 25.11 0.0482
2015-05-01 2015-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 64,773 5,546
2015-02-10 2014-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 53,166 53,166 4,433 0.0392
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.