Automatic Data Processing, Inc.
US ˙ NasdaqGS ˙ US0530151036

SecurityADP / Automatic Data Processing, Inc.
InstitutionBanco Santander, S.A.
Latest Disclosed Ownership8,442 shares
Latest Disclosed Value $ 1,715,246
Banco Santander, S.A. reports 46.11% decrease in ownership of ADP / Automatic Data Processing, Inc.

On May 8, 2026 - Banco Santander, S.A. filed a 13F-HR form disclosing ownership of 8,442 shares of Automatic Data Processing, Inc. (US:ADP) valued at $1,715,246 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 15,665 shares of Automatic Data Processing, Inc.. This represents a change in shares of -46.11% during the quarter. The current value of the position is $1,952,719 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)
2026-05-08 2026-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 8,442 -7,223 -46.11 1,715 -57.43 0.0138
2026-02-13 2025-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 15,665 1,933 14.08 4,030 -0.02 0.0302
2025-11-12 2025-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 13,732 -4,785 -25.84 4,030 -29.42 0.0358
2025-08-01 2025-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 18,517 14,012 311.03 5,711 314.97 0.0542
2025-05-09 2025-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 4,505 967 27.33 1,376 32.95 0.0152
2025-02-07 2024-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 3,538 1,158 48.66 1,036 57.29 0.0125
2024-11-12 2024-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 2,380 2,380 659 0.0078
2022-05-09 2022-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 0 -12,370 -100.00 0 -100.00
2022-02-09 2021-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 12,370 -36,562 -74.72 3,050 -68.82 0.0164
2021-11-08 2021-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 48,932 -27 -0.06 9,783 0.61 0.0526
2021-07-29 2021-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 48,959 36,985 308.88 9,724 330.84 0.0543
2021-05-10 2021-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 11,974 2,108 21.37 2,257 29.86 0.0159
2021-02-12 2020-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 9,866 2,856 40.74 1,738 77.71 0.0125
2020-11-09 2020-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 7,010 1,160 19.83 978 12.28 0.0129
2020-08-05 2020-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 5,850 -7,485 -56.13 871 -52.22 0.0113
2020-05-11 2020-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 13,335 1,086 8.87 1,823 -12.69 0.0209
2020-02-07 2019-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 12,249 -268,309 -95.63 2,088 -95.39 0.0193
2019-11-06 2019-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 280,558 176,602 169.88 45,287 163.50 0.4404
2019-08-07 2019-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 103,956 97,810 1,591.44 17,187 1,666.39 0.1744
2019-05-13 2019-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 6,146 809 15.16 973 39.00 0.0110
2019-02-12 2018-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 5,337 1,587 42.32 700 23.89 0.0088
2018-11-13 2018-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 3,750 3,750 565 0.0064
2018-02-14 2017-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 0 -630,100 -100.00 0 -100.00
2017-11-13 2017-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 630,100 630,100 68,883 1.1359
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.