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Mattern Capital Management’s Automatic Data Processing ADP Stock Holding History

Mattern Capital Management’s Portfolio ADP Stock Details ADP Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$11.2M Buy
50,215
+830
+2% +$177K 1.31% 19
2026
Q1 		$10M Buy
49,385
+12,897
+35% +$2.96M 1.2% 27
2025
Q4 		$9.39M Buy
36,488
+2,432
+7% +$647K 1.11% 38
2025
Q3 		$10M Sell
34,056
-269
-0.8% -$81K 1.18% 27
2025
Q2 		$10.6M Buy
34,325
+108
+0.3% +$33.2K 1.27% 17
2025
Q1 		$10.5M Sell
34,217
-637
-2% -$192K 1.33% 15
2024
Q4 		$10.2M Sell
34,854
-498
-1% -$147K 1.33% 18
2024
Q3 		$9.78M Sell
35,352
-146
-0.4% -$38.2K 1.23% 31
2024
Q2 		$8.47M Sell
35,498
-142
-0.4% -$34.9K 1.17% 37
2024
Q1 		$8.9M Buy
35,640
+938
+3% +$229K 1.21% 36
2023
Q4 		$8.08M Buy
34,702
+1,148
+3% +$267K 1.18% 42
2023
Q3 		$8.07M Buy
33,554
+1,482
+5% +$361K 1.31% 20
2023
Q2 		$7.05M Buy
32,072
+1,971
+7% +$425K 1.14% 36
2023
Q1 		$6.7M Buy
30,101
+1,082
+4% +$244K 1.18% 35
2022
Q4 		$6.93M Sell
29,019
-1,271
-4% -$312K 1.28% 18
2022
Q3 		$6.85M Sell
30,290
-1,191
-4% -$281K 1.43% 8
2022
Q2 		$6.61M Sell
31,481
-1,140
-3% -$250K 1.31% 16
2022
Q1 		$7.42M Buy
32,621
+317
+1% +$67.9K 1.33% 19
2021
Q4 		$7.97M Sell
32,304
-666
-2% -$151K 1.39% 11
2021
Q3 		$6.59M Buy
32,970
+19
+0.1% +$3.91K 1.3% 23
2021
Q2 		$6.54M Buy
32,951
+417
+1% +$81K 1.29% 19
2021
Q1 		$6.13M Buy
32,534
+538
+2% +$93.4K 1.33% 17
2020
Q4 		$5.64M Sell
31,996
-10
-0% -$1.64K 1.34% 18
2020
Q3 		$4.46M Buy
32,006
+6,685
+26% +$937K 1.17% 43
2020
Q2 		$3.77M Buy
25,321
+361
+1% +$51.7K 1.09% 55
2020
Q1 		$3.41M Buy
24,960
+1,050
+4% +$169K 1.16% 38
2019
Q4 		$4.08M Buy
+23,910
New +$3.96M 1.13% 39

Other funds holding ADP

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Charles Schwab
Charles Schwab San Francisco, California $751B AUM 38.74% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $717B AUM 35.42% 1-Year Est. Return

Mattern Capital Management's ADP Position: Q2 2026 in Review

Mattern Capital Management increased its Automatic Data Processing (ADP) stake by 1.7% in Q2 2026, buying an estimated $177K and bringing the position to 50,215 shares worth $11.2M. The position accounts for 1.31% of the portfolio, ranked #19.

Mattern Capital Management first reported a position in ADP in Q4 2019 and has held it in 27 quarters since. 2,281 funds tracked by Wall St. Rank hold ADP as of Q2 2026.

  • Mattern Capital Management held 50,215 shares of Automatic Data Processing worth $11.2M as of Q2 2026.
  • Mattern Capital Management bought 830 Automatic Data Processing shares in Q2 2026, an estimated $177K.
  • Automatic Data Processing made up 1.31% of Mattern Capital Management's portfolio in Q2 2026, its #19 holding.
  • Mattern Capital Management first reported a position in Automatic Data Processing in Q4 2019 and has held it in 27 quarters since.
  • 2,281 funds tracked by Wall St. Rank held Automatic Data Processing as of Q2 2026.

Based on Mattern Capital Management's 13F filing for Q2 2026, filed 24 Jul 2026.