Automatic Data Processing, Inc.
US ˙ NasdaqGS ˙ US0530151036

SecurityADP / Automatic Data Processing, Inc.
InstitutionAmundi
Latest Disclosed Ownership3,034,002 shares
Latest Disclosed Value $ 616,448,524
Amundi reports 27.74% increase in ownership of ADP / Automatic Data Processing, Inc.

On May 15, 2026 - Amundi filed a 13F-HR form disclosing ownership of 3,034,002 shares of Automatic Data Processing, Inc. (US:ADP) valued at $616,448,526 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 2,375,070 shares of Automatic Data Processing, Inc.. This represents a change in shares of 27.74% during the quarter. The current value of the position is $690,993,956 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)
2026-05-15 2026-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 3,034,002 658,932 27.74 616,449 0.90 0.0707
2026-02-17 2025-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 2,375,070 201,075 9.25 610,940 -3.29 0.1660
2025-11-14 2025-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 2,173,995 -935,125 -30.08 631,755 -33.40 0.2030
2025-08-13 2025-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 3,109,120 619,829 24.90 948,549 24.77 0.3274
2025-05-15 2025-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 2,489,291 -630,748 -20.22 760,229 -16.55 0.2767
2025-02-07 2024-12-31 13F Automatic Data Processing COM 053015103 3,120,039 449,431 16.83 910,972 19.95 0.3168
2024-11-13 2024-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 2,670,608 96,090 3.73 759,468 24.40 0.2799
2024-08-14 2024-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 2,574,518 -285,690 -9.99 610,506 -12.20 0.2340
2024-05-15 2024-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 2,860,208 -382,524 -11.80 695,335 -8.73 0.2988
2024-02-14 2023-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 3,242,732 12,969 0.40 761,847 -4.33 0.3429
2023-11-14 2023-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 3,229,763 373,354 13.07 796,352 27.36 0.3914
2023-08-14 2023-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 2,856,409 -880,658 -23.57 625,287 -22.22 0.3162
2023-05-15 2023-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 3,737,067 727,044 24.15 803,886 9.60 0.4333
2023-02-14 2022-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 3,010,023 856,540 39.77 733,450 44.99 0.4023
2022-11-14 2022-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 2,153,483 167,713 8.45 505,873 20.88 0.2999
2022-09-02 2022-06-30 13F/A-1 AUTOMATIC DATA PROCESSING COM 053015103 1,985,770 -195,152 -8.95 418,490 -18.07 0.3358
2022-08-15 2022-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 1,985,770 -195,152 418,490 0.0221
2022-05-16 2022-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 2,180,922 1,360,196 165.73 510,781 152.33 0.3457
2022-02-14 2021-12-31 13F Automatic Data Processing COM 053015903 820,726 -1,474,836 -64.25 202,428 -55.89 0.1283
2022-02-14 2021-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 1,737,711 403,029
2021-11-15 2021-09-30 13F Automatic Data Processing COM 053015103 2,295,562 33,058 1.46 458,878 102,100.00 0.3215
2021-08-16 2021-06-30 13F Automatic Data Processing COM 053015103 2,262,504 2,262,504 449 0.3121
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.