Automatic Data Processing, Inc.
US ˙ NasdaqGS ˙ US0530151036

SecurityADP / Automatic Data Processing, Inc.
InstitutionTower Bridge Advisors
Latest Disclosed Ownership5,354 shares
Latest Disclosed Value $ 1,087,826
Tower Bridge Advisors reports 1.83% decrease in ownership of ADP / Automatic Data Processing, Inc.

On May 12, 2026 - Tower Bridge Advisors filed a 13F-HR form disclosing ownership of 5,354 shares of Automatic Data Processing, Inc. (US:ADP) valued at $1,087,826 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 5,454 shares of Automatic Data Processing, Inc.. This represents a change in shares of -1.83% during the quarter. The current value of the position is $1,238,434 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)
2026-05-12 2026-03-31 13F Automatic Data Processing Common 053015103 5,354 -100 -1.83 1,088 -22.47 0.0763
2026-02-13 2025-12-31 13F AUTOMATIC DATA PRO COMMON 053015103 5,454 0 0.00 1,403 -12.37 0.1417
2025-11-12 2025-09-30 13F AUTOMATIC DATA PROCES COMMON 053015103 5,454 -150 -2.68 1,601 -7.41 0.1599
2025-08-11 2025-06-30 13F AUTOMATIC DATA PROCES COMMON 053015103 5,604 -375 -6.27 1,728 -5.37 0.1858
2025-05-08 2025-03-31 13F AUTOMATIC DATA PRO COMMON 053015103 5,979 -650 -9.81 1,827 -5.88 0.2041
2025-02-05 2024-12-31 13F AUTOMATIC DATA PROCES COMMON 053015103 6,629 -79 -1.18 1,941 4.53 0.2067
2024-11-06 2024-09-30 13F AUTOMATIC DATA PROCES COMMON 053015103 6,708 -425 -5.96 1,856 9.05 0.1926
2024-07-24 2024-06-30 13F AUTOMATIC DATA PROCES COMMON 053015103 7,133 -4,550 -38.95 1,703 -41.65 0.1892
2024-04-29 2024-03-31 13F AUTOMATIC DATA PROCES COMMON 053015103 11,683 -21,923 -65.24 2,918 -62.74 0.2970
2024-02-14 2023-12-31 13F AUTOMATIC DATA PROCES COMMON 053015103 33,606 2,475 7.95 7,829 4.54 0.6734
2023-11-01 2023-09-30 13F AUTOMATIC DATA PROCES COMMON 053015103 31,131 -475 -1.50 7,489 7.82 0.6932
2023-07-20 2023-06-30 13F AUTOMATIC DATA PROCESSING IN COM 053015103 31,606 -5,290 -14.34 6,947 -15.44 0.6368
2023-04-26 2023-03-31 13F AUTOMATIC DATA PROCES COMMON 053015103 36,896 -810 -2.15 8,214 -8.79 0.6726
2023-01-27 2022-12-31 13F AUTOMATIC DATA PROCES COMMON 053015103 37,706 -250 -0.66 9,006 4.90 0.7480
2022-11-14 2022-09-30 13F AUTOMATIC DATA PROCES COMMON 053015103 37,956 -270 -0.71 8,585 6.94 0.7629
2022-07-21 2022-06-30 13F AUTOMATIC DATA PROCES COMMON 053015103 38,226 -960 -2.45 8,029 -9.96 0.6548
2022-05-05 2022-03-31 13F AUTOMATIC DATA PROCES COMMON 053015103 39,186 -1,200 -2.97 8,916 -10.46 0.5960
2022-02-09 2021-12-31 13F AUTOMATIC DATA PROCES COMMON 053015103 40,386 -50 -0.12 9,958 23.20 0.6114
2021-10-28 2021-09-30 13F AUTOMATIC DATA PROCES COMMON 053015103 40,436 250 0.62 8,084 1.28 0.5393
2021-08-10 2021-06-30 13F AUTOMATIC DATA PROCES COMMON 053015103 40,186 -150 -0.37 7,982 4.99 0.5320
2021-05-12 2021-03-31 13F AUTOMATIC DATA PROCES COMMON 053015103 40,336 -602 -1.47 7,602 5.39 0.5723
2021-02-11 2020-12-31 13F AUTOMATIC DATA PROCES COMMON 053015103 40,938 297 0.73 7,213 27.24 0.5875
2020-11-13 2020-09-30 13F AUTOMATIC DATA PROCES COMMON 053015103 40,641 19,766 94.69 5,669 82.40 0.5792
2020-07-22 2020-06-30 13F AUTOMATIC DATA PROCES COMMON 053015103 20,875 4,300 25.94 3,108 37.22 0.3485
2020-04-27 2020-03-31 13F AUTOMATIC DATA PROCES COMMON 053015103 16,575 1,400 9.23 2,265 -12.45 0.2974
2020-02-05 2019-12-31 13F AUTOMATIC DATA PROCES COMMON 053015103 15,175 -5,820 -27.72 2,587 -24.27 0.2733
2019-11-12 2019-09-30 13F AUTOMATIC DATA PROCES COMMON 053015103 20,995 -475 -2.21 3,417 -3.75 0.3741
2019-08-06 2019-06-30 13F AUTOMATIC DATA PROCES COMMON 053015103 21,470 -600 -2.72 3,550 0.68 0.3971
2019-04-30 2019-03-31 13F AUTOMATIC DATA PROCES COMMON 053015103 22,070 -75 -0.34 3,525 21.43 0.4092
2019-02-07 2018-12-31 13F AUTOMATIC DATA PROCES COMMON 053015103 22,145 -750 -3.28 2,904 -15.83 0.3741
2018-10-23 2018-09-30 13F AUTOMATIC DATA PROCES COMMON 053015103 22,895 -700 -2.97 3,449 8.97 0.3604
2018-08-09 2018-06-30 13F AUTOMATIC DATA PROCES COMMON 053015103 23,595 -445 -1.85 3,165 16.02 0.3530
2018-05-02 2018-03-31 13F AUTOMATIC DATA PROCES COMMON 053015103 24,040 -2,616 -9.81 2,728 -12.65 0.3025
2018-01-30 2017-12-31 13F AUTOMATIC DATA PROCES COMMON 053015103 26,656 791 3.06 3,124 10.47 0.3351
2017-11-06 2017-09-30 13F AUTOMATIC DATA PROCES COMMON 053015103 25,865 -39,020 -60.14 2,828 -57.48 0.3213
2017-07-26 2017-06-30 13F AUTOMATIC DATA PROCES COMMON 053015103 64,885 -10,517 -13.95 6,648 -13.89 0.7622
2017-05-02 2017-03-31 13F AUTOMATIC DATA PROCES COMMON 053015103 75,402 -1,790 -2.32 7,720 -2.68 0.9014
2017-01-31 2016-12-31 13F AUTOMATIC DATA PROCES COMMON 053015103 77,192 -2,088 -2.63 7,934 13.46 0.9616
2016-10-27 2016-09-30 13F AUTOMATIC DATA PROCES COMMON 053015103 79,280 -405 -0.51 6,993 -4.48 0.8514
2016-08-12 2016-06-30 13F AUTOMATIC DATA PROCES COMMON 053015103 79,685 -440 -0.55 7,321 1.84 0.9120
2016-05-12 2016-03-31 13F AUTOMATIC DATA PROCES COMMON 053015103 80,125 -850 -1.05 7,188 4.78 0.8978
2016-02-02 2015-12-31 13F AUTOMATIC DATA PROCES COMMON 053015103 80,975 -1,055 -1.29 6,860 4.08 0.8937
2015-11-13 2015-09-30 13F/A-1 AUTOMATIC DATA PROCES COMMON 053015103 82,030 -250 -0.30 6,592 -0.15 0.9071
2015-11-12 2015-09-30 13F AUTOMATIC DATA PROCES COMMON 053015103 82,280 6,601
2015-08-13 2015-06-30 13F AUTOMATIC DATA PROCES COMMON 053015103 82,280 275 0.34 6,601 -6.00 0.8350
2015-05-14 2015-03-31 13F AUTOMATIC DATA PROCES COMMON 053015103 82,005 -1,960 -2.33 7,023 0.31 0.8897
2015-02-19 2014-12-31 13F AUTOMATIC DATA PROCES COMMON 053015103 83,965 -919 -1.08 7,000 -0.74 0.8607
2014-11-12 2014-09-30 13F AUTOMATIC DATA PROCES COMMON 053015103 84,884 -1,005 -1.17 7,052 3.57 0.8895
2014-08-26 2014-06-30 13F AUTOMATIC DATA PROCES COMMON 053015103 85,889 6,900 8.74 6,809 11.59 0.8397
2014-05-08 2014-03-31 13F AUTOMATIC DATA PROCES COMMON 053015103 78,989 994 1.27 6,103 -3.16 0.7842
2014-02-10 2013-12-31 13F AUTOMATIC DATA PROCES COMMON 053015103 77,995 -331 -0.42 6,302 11.15 0.8273
2013-11-05 2013-09-30 13F AUTOMATIC DATA PROCES COMMON 053015103 78,326 -1,606 -2.01 5,669 3.00 0.8132
2013-07-24 2013-06-30 13F AUTOMATIC DATA PROCES COMMON 053015103 79,932 79,932 5,504 0.8158
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.