Automatic Data Processing, Inc.
US ˙ NasdaqGS ˙ US0530151036

SecurityADP / Automatic Data Processing, Inc.
InstitutionD.a. Davidson & Co.
Latest Disclosed Ownership434,698 shares
Latest Disclosed Value $ 88,322,030
D.a. Davidson & Co. reports 15.04% increase in ownership of ADP / Automatic Data Processing, Inc.

On May 5, 2026 - D.a. Davidson & Co. filed a 13F-HR form disclosing ownership of 434,698 shares of Automatic Data Processing, Inc. (US:ADP) valued at $88,321,940 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 377,862 shares of Automatic Data Processing, Inc.. This represents a change in shares of 15.04% during the quarter. The current value of the position is $100,549,994 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)
2026-05-05 2026-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 434,698 56,836 15.04 88,322 -9.13 0.5354
2026-01-29 2025-12-31 13F AUTOMATIC DATA PROCESSING I IN COM 053015103 377,862 13,628 3.74 97,198 -9.08 0.5954
2025-10-22 2025-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 364,234 14,052 4.01 106,903 -1.01 0.6841
2025-07-30 2025-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 350,182 87,324 33.22 107,996 34.47 0.7604
2025-04-28 2025-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 262,858 2,615 1.00 80,311 5.42 0.6449
2025-01-31 2024-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 260,243 1,047 0.40 76,181 6.21 0.6199
2024-11-13 2024-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 259,196 1,162 0.45 71,727 16.46 0.5923
2024-08-01 2024-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 258,034 1,255 0.49 61,590 -3.96 0.5459
2024-05-13 2024-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 256,779 2,187 0.86 64,128 8.12 0.5777
2024-02-09 2023-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 254,592 2,041 0.81 59,312 -2.38 0.5815
2023-11-08 2023-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 252,551 591 0.23 60,759 9.72 0.6595
2023-08-11 2023-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 251,960 3,868 1.56 55,378 0.30 0.5847
2023-04-25 2023-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 248,092 -5,509 -2.17 55,214 -8.87 0.6211
2023-02-03 2022-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 253,601 -6,252 -2.41 60,586 3.06 0.7147
2022-11-07 2022-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 259,853 -3,844 -1.46 58,786 6.14 0.7700
2022-07-28 2022-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 263,697 -552 -0.21 55,387 -7.88 0.6957
2022-05-12 2022-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 264,249 4,936 1.90 60,127 -5.96 0.6550
2022-01-31 2021-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 259,313 -3,989 -1.51 63,935 21.46 0.6814
2021-11-15 2021-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 263,302 1,262 0.48 52,640 1.14 0.6108
2021-08-10 2021-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 262,040 8,423 3.32 52,047 8.89 0.6103
2021-05-07 2021-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 253,617 17,704 7.50 47,799 15.03 0.6115
2021-02-10 2020-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 235,913 1,146 0.49 41,554 26.89 0.6352
2020-11-02 2020-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 234,767 8,527 3.77 32,748 -2.78 0.5699
2020-08-10 2020-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 226,240 -18,555 -7.58 33,685 0.66 0.6290
2020-05-05 2020-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 244,795 6,389 2.68 33,464 -17.67 0.6532
2020-02-14 2019-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 238,406 7,306 3.16 40,644 8.95 0.6569
2019-11-05 2019-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 231,100 -2,875 -1.23 37,304 -3.56 0.6684
2019-08-13 2019-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 233,975 -114,347 -32.83 38,683 -29.25 0.7207
2019-05-13 2019-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 348,322 295 0.08 54,674 19.81 0.9397
2019-01-29 2018-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 348,027 -6,031 -1.70 45,633 -14.45 0.8897
2018-11-13 2018-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 354,058 -6,387 -1.77 53,342 10.32 0.9490
2018-08-02 2018-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 360,445 -4,941 -1.35 48,350 16.61 0.9477
2018-05-04 2018-03-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 365,386 8,386 2.35 41,464 -0.89 0.8569
2018-02-08 2017-12-31 13F AUTOMATIC DATA PROCESSING IN COM 053015103 357,000 14,240 4.15 41,837 11.65 0.8772
2017-11-08 2017-09-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 342,760 -13,123 -3.69 37,470 2.76 0.7352
2017-08-11 2017-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 355,883 24,245 7.31 36,463 7.38 0.8235
2017-05-12 2017-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 331,638 10,639 3.31 33,956 2.93 0.8235
2017-02-15 2016-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 320,999 191,078 147.07 32,989 187.94 0.7481
2016-11-18 2016-09-30 13F/A-1 AUTOMATIC DATA PROCESSING COM 053015103 129,921 -123,597 -48.75 11,457 -50.80 0.2851
2016-11-14 2016-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 129,921 11,457
2016-08-13 2016-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 253,518 12,961 5.39 23,288 7.93 0.6852
2016-05-13 2016-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 240,557 -34,389 -12.51 21,577 -7.36 0.6720
2016-02-12 2015-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 274,946 56 0.02 23,291 5.45 0.7587
2015-11-13 2015-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 274,890 10,165 3.84 22,088 4.01 0.7730
2015-08-14 2015-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 264,725 -3,186 -1.19 21,236 -7.44 0.6979
2015-05-06 2015-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 267,911 16 0.01 22,942 2.73 0.7530
2015-02-12 2014-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 267,895 10,480 4.07 22,332 4.43 0.7301
2014-11-12 2014-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 257,415 6,048 2.41 21,384 7.32 0.7247
2014-07-29 2014-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 251,367 22,278 9.72 19,926 12.60 0.6748
2014-05-05 2014-03-31 13F AUTOMATIC DATA PROCESSING COM 053015103 229,089 18,593 8.83 17,696 4.06 0.6326
2014-02-13 2013-12-31 13F/A-1 AUTOMATIC DATA PROCESSING COM 053015103 210,496 16,120 8.29 17,005 20.89 0.6352
2014-02-12 2013-12-31 13F AUTOMATIC DATA PROCESSING COM 053015103 210,496 17,005
2013-11-14 2013-09-30 13F AUTOMATIC DATA PROCESSING COM 053015103 194,376 2,456 1.28 14,067 6.47 0.6328
2013-08-16 2013-06-30 13F AUTOMATIC DATA PROCESSING COM 053015103 191,920 191,920 13,212 0.6379
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.