Automatic Data Processing, Inc.
US ˙ NasdaqGS ˙ US0530151036

SecurityADP / Automatic Data Processing, Inc.
InstitutionOssiam
Latest Disclosed Ownership10,156 shares
Latest Disclosed Value $ 2,063,496
Ossiam reports 23.37% increase in ownership of ADP / Automatic Data Processing, Inc.

On May 14, 2026 - Ossiam filed a 13F-HR form disclosing ownership of 10,156 shares of Automatic Data Processing, Inc. (US:ADP) valued at $2,063,496 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 8,232 shares of Automatic Data Processing, Inc.. This represents a change in shares of 23.37% during the quarter. The current value of the position is $2,313,029 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 10,156 1,924 23.37 2,063 -2.55 0.0363
2026-02-13 2025-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 8,232 -609 -6.89 2,118 -18.39 0.0423
2025-11-14 2025-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 8,841 547 6.60 2,595 1.45 0.0334
2025-08-13 2025-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 8,294 -316 -3.67 2,558 -2.78 0.0288
2025-05-14 2025-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 8,610 -1,803 -17.31 2,631 -13.71 0.0367
2025-02-13 2024-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 10,413 -76 -0.72 3,048 5.03 0.0526
2024-11-13 2024-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 10,489 -279 -2.59 2,903 12.92 0.0561
2024-08-13 2024-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 10,768 -113,468 -91.33 2,570 -91.72 0.0487
2024-05-13 2024-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 124,236 116,410 1,487.48 31,027 1,601.92 0.5434
2024-02-13 2023-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 7,826 570 7.86 1,823 4.47 0.0294
2023-11-14 2023-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 7,256 -254,296 -97.23 1,746 -96.96 0.0308
2023-08-11 2023-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 261,552 258,234 7,782.82 57,487 7,689.43 1.0328
2023-05-12 2023-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 3,318 -13,082 -79.77 739 -81.16 0.0153
2023-02-13 2022-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 16,400 10,753 190.42 3,917 206.73 0.1015
2022-11-14 2022-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 5,647 -10,496 -65.02 1,277 -62.34 0.0370
2022-08-12 2022-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 16,143 -871 -5.12 3,391 -12.40 0.1020
2022-05-13 2022-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 17,014 11,297 197.60 3,871 174.54 0.1013
2022-02-14 2021-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 5,717 2,322 68.39 1,410 107.66 0.0369
2021-11-12 2021-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 3,395 920 37.17 679 30.83 0.0192
2021-08-13 2021-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 2,475 1,191 92.76 519 114.46 0.0141
2021-05-17 2021-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 1,284 367 40.02 242 49.38 0.0075
2021-02-12 2020-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 917 884 2,678.79 162 3,140.00 0.0057
2020-11-12 2020-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 33 -339 -91.13 5 -90.91 0.0002
2020-08-13 2020-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 372 101 37.27 55 48.65 0.0035
2020-05-14 2020-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 271 -455 -62.67 37 -70.16 0.0025
2020-02-14 2019-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 726 -752 -50.88 124 -48.12 0.0095
2019-11-13 2019-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 1,478 -92 -5.86 239 -8.08 0.0167
2019-08-13 2019-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 1,570 1,570 260 0.0202
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.