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Calamos Advisors LLC

Position in ADP — Automatic Data Processing Inc

CIK 1316507 NAPERVILLE, IL

Position in ADP

as of Mar 31, 2026 · filed May 4, 2026
Position Value
$21,639,685
-$3,009,636 QoQ
Shares Held
106,505
+11.1% QoQ
Ownership
0.027%
of shares outstanding
% of Portfolio
0.12%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority Sole 99% Shared 0% None 1%

Common Shares in ADP Over Time

Shares Held

Position Value (USD)

Position in Software - Application

Technology · as of Mar 31, 2026

Calamos Advisors LLC holds $392,564,098 across 28 Software - Application names. ADP ranks #8 (5.5% of the industry book) .

# Ticker Company Shares Value (USD) Open
8 ADP
Automatic Data Processing Inc
This page
106,505 $21,639,685

All Filings in ADP

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25 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $21,639,685 106,505
2025-12-31 $24,649,321 95,826
2025-09-30 $29,266,939 99,717
2025-06-30 $30,752,722 99,717
2025-03-31 $30,466,535 99,717
2024-12-31 $28,864,934 98,606
2024-09-30 $27,287,238 98,606
2024-06-30 $24,113,657 101,025
2024-03-31 $26,150,774 104,712
2023-12-31 $25,008,397 107,346
2023-09-30 $26,162,593 108,748
2023-06-30 $26,490,849 120,528
2023-03-31 $26,833,148 120,528
2022-12-31 $35,748,504 149,663
2022-09-30 $39,618,309 175,155
2022-06-30 $30,240,509 143,975
2022-03-31 $31,877,898 140,098
2021-12-31 $29,940,976 121,425
2021-09-30 $23,335,462 116,724
2021-06-30 $21,137,934 106,424
2021-03-31 $15,495,626 82,218
2020-12-31 $14,039,263 79,678
2020-09-30 $11,595,664 83,129
2020-06-30 $13,463,378 90,425
2020-03-31 $13,150,119 96,211