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Main Street Research LLC

Position in ADP — Automatic Data Processing Inc

CIK 1513211 SAUSALITO, CA

Position in ADP

as of Jun 30, 2026 · filed Jul 29, 2026
Position Value
$468,503
+$15,006 QoQ
Shares Held
2,092
-6.3% QoQ
Ownership
0.001%
of shares outstanding
% of Portfolio
0.03%
of 13F equity value
Holder Rank
#1,516
of 2,282 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in ADP Over Time

Shares Held

Position Value (USD)

Position in Software - Application

Technology · as of Jun 30, 2026

Main Street Research LLC holds $17,236,593 across 8 Software - Application names. ADP ranks #5 (2.7% of the industry book) .

# Ticker Company Shares Value (USD) Open
5 ADP
Automatic Data Processing Inc
This page
2,092 $468,503

All Filings in ADP

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26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $468,503 2,092
2026-03-31 $453,497 2,232
2025-12-31 $593,944 2,309
2025-09-30 $727,293 2,478
2025-06-30 $764,215 2,478
2025-03-31 $827,375 2,708
2024-12-31 $1,003,185 3,427
2024-09-30 $877,787 3,172
2024-06-30 $757,124 3,172
2024-03-31 $817,149 3,272
2023-12-31 $791,166 3,396
2023-09-30 $861,276 3,580
2023-06-30 $833,443 3,792
2023-03-31 $786,997 3,535
2022-12-31 $796,598 3,335
2022-09-30 $754,343 3,335
2022-06-30 $700,483 3,335
2022-03-31 $770,222 3,385
2021-12-31 $834,673 3,385
2021-09-30 $671,731 3,360
2021-06-30 $689,211 3,470
2021-03-31 $633,259 3,360
2020-12-31 $624,452 3,544
2020-09-30 $500,769 3,590
2020-06-30 $559,975 3,761
2020-03-31 $514,053 3,761