Aufman Associates
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Aufman Associates’s Minerals Technologies MTX Stock Holding History

Aufman Associates’s Portfolio MTX Stock Details MTX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q3 		$2.36M Hold
36,011
– – 0.96% 12
2026
Q2 		$2.66M Sell
36,011
-2,000
-5% -$151K 1.06% 12
2026
Q1 		$2.7M Hold
38,011
– – 1.32% 11
2025
Q4 		$2.32M Hold
38,011
– – 1.19% 10
2025
Q3 		$2.36M Hold
38,011
– – 1.33% 10
2025
Q2 		$2.09M Buy
38,011
+1,007
+3% +$56.8K 1.29% 10
2025
Q1 		$2.35M Buy
37,004
+1,007
+3% +$71.8K 1.62% 9
2024
Q4 		$2.74M Sell
35,997
-12,500
-26% -$984K 1.85% 9
2024
Q3 		$3.75M Buy
48,497
+13,087
+37% +$1.01M 2.41% 7
2024
Q2 		$2.94M Sell
35,410
-20,000
-36% -$1.58M 2.1% 9
2024
Q1 		$4.17M Sell
55,410
-3,792
-6% -$266K 2.94% 6
2023
Q4 		$4.22M Sell
59,202
-14,985
-20% -$888K 3.19% 6
2023
Q3 		$4.06M Buy
74,187
+65,830
+788% +$3.76M 3.41% 6
2023
Q2 		$482K Buy
8,357
+8
+0.1% +$466 0.4% 23
2023
Q1 		$504K Buy
8,349
+7
+0.1% +$436 0.43% 21
2022
Q4 		$507K Buy
8,342
+7
+0.1% +$397 0.47% 17
2022
Q3 		$412K Buy
8,335
+7
+0.1% +$426 0.43% 19
2022
Q2 		$511K Buy
8,328
+6
+0.1% +$383 0.49% 20
2022
Q1 		$551K Buy
8,322
+6
+0.1% +$415 0.43% 21
2021
Q4 		$608K Buy
8,316
+5
+0.1% +$359 0.45% 20
2021
Q3 		$580K Buy
+8,311
New +$634K 0.48% 20
2021
Q1 		– Sell
-72,180
Closed -$4.48M – 46
2020
Q4 		$4.48M Buy
72,180
+3,443
+5% +$204K 4.02% 5
2020
Q3 		$3.51M Hold
68,737
– – 3.77% 5
2020
Q2 		$3.23M Hold
68,737
– – 3.66% 5
2020
Q1 		$2.49M Buy
+68,737
New +$3.33M 3.44% 5

Other funds holding MTX

Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $551B AUM 33.95% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $608B AUM 32.77% 1-Year Est. Return
Allspring Global Investments
Allspring Global Investments Charlotte, North Carolina $64.1B AUM 28.9% 1-Year Est. Return
Principal Financial Group
Principal Financial Group Des Moines, Iowa $195B AUM 21.17% 1-Year Est. Return
Creative Planning
Creative Planning Overland Park, Kansas $179B AUM 16.96% 1-Year Est. Return
Skylands Capital
Skylands Capital Milwaukee, Wisconsin $762M AUM 14.92% 1-Year Est. Return
Isthmus Partners
Isthmus Partners Madison, Wisconsin $1.04B AUM 19.97% 1-Year Est. Return
Corbyn Investment Management
Corbyn Investment Management Lutherville, Maryland $336M AUM 15.47% 1-Year Est. Return
Thrivent Financial for Lutherans
Thrivent Financial for Lutherans Minneapolis, Minnesota $61B AUM 26.92% 1-Year Est. Return
New York State Teachers Retirement System (NYSTRS)
New York State Teachers Retirement System (NYSTRS) Albany, New York $52.9B AUM 36.03% 1-Year Est. Return

Aufman Associates's MTX Position: Q3 2026 in Review

Aufman Associates held its Minerals Technologies (MTX) position steady in Q3 2026 at 36,011 shares worth $2.36M. The position accounts for 0.96% of the portfolio, ranked #12.

Aufman Associates first reported a position in MTX in Q1 2020 and has held it in 25 quarters since. The position peaked at $4.48M in Q4 2020. 102 funds tracked by Wall St. Rank hold MTX as of Q3 2026.

  • Aufman Associates held 36,011 shares of Minerals Technologies worth $2.36M as of Q3 2026.
  • Aufman Associates left its Minerals Technologies share count unchanged in Q3 2026.
  • Minerals Technologies made up 0.96% of Aufman Associates's portfolio in Q3 2026, its #12 holding.
  • Aufman Associates first reported a position in Minerals Technologies in Q1 2020 and has held it in 25 quarters since.
  • Aufman Associates's Minerals Technologies position peaked at $4.48M in Q4 2020.
  • 102 funds tracked by Wall St. Rank held Minerals Technologies as of Q3 2026.

Based on Aufman Associates's 13F filing for Q3 2026, filed 4 Nov 2026.