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US ˙ NYSE ˙ US6031581068

SecurityMTX / Minerals Technologies Inc.
InstitutionStrs Ohio
Latest Disclosed Ownership12,800 shares
Latest Disclosed Value $ 907,776
Strs Ohio reports 184.44% increase in ownership of MTX / Minerals Technologies Inc.

On April 24, 2026 - Strs Ohio filed a 13F-HR form disclosing ownership of 12,800 shares of Minerals Technologies Inc. (US:MTX) valued at $907,776 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 4,500 shares of Minerals Technologies Inc.. This represents a change in shares of 184.44% during the quarter. The current value of the position is $981,760 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)
2026-04-24 2026-03-31 13F MINERALS TECHNOLOGIES COM_STK 603158106 12,800 8,300 184.44 908 231.02 0.0036
2026-02-02 2025-12-31 13F MINERALS TECHNOLOGIES COM_STK 603158106 4,500 0 0.00 274 -1.79 0.0010
2025-10-30 2025-09-30 13F MINERALS TECHNOLOGIES COM_STK 603158106 4,500 0 0.00 280 12.96 0.0010
2025-08-04 2025-06-30 13F MINERALS TECHNOLOGIES COM_STK 603158106 4,500 3,400 309.09 248 257.97 0.0009
2025-05-28 2025-03-31 13F MINERALS TECHNOLOGIES COM_STK 603158106 1,100 -49,700 -97.83 70 -98.22 0.0003
2025-05-28 2024-12-31 13F MINERALS TECHNOLOGIES COM_STK 603158106 50,800 -17,700 -25.84 3,871 -26.82 0.0154
2024-11-01 2024-09-30 13F MINERALS TECHNOLOGIES COM_STK 603158106 68,500 22,000 47.31 5,290 36.83 0.0204
2024-08-05 2024-06-30 13F MINERALS TECHNOLOGIES COM_STK 603158106 46,500 39,700 583.82 3,867 0.0153
2024-05-13 2024-03-31 13F MINERALS TECHNOLOGIES COM_STK 603158106 6,800 6,800 1 0.0020
2022-07-25 2022-06-30 13F MINERALS TECHNOLOGIES COM 603158106 0 -9,000 -100.00 0 -100.00
2022-04-21 2022-03-31 13F MINERALS TECHNOLOGIES COM 603158106 9,000 -6,000 -40.00 595 -45.76 0.0022
2022-01-24 2021-12-31 13F MINERALS TECHNOLOGIES COM 603158106 15,000 0 0.00 1,097 4.78 0.0038
2021-10-22 2021-09-30 13F MINERALS TECHNOLOGIES COM 603158106 15,000 6,700 80.72 1,047 60.58 0.0039
2021-07-26 2021-06-30 13F MINERALS TECHNOLOGIES COM 603158106 8,300 7,800 1,560.00 652 2,407.69 0.0023
2019-10-21 2019-09-30 13F/A-1 MINERALS TECHNOLOGIES COM 603158106 500 0 0.00 26 0.00 0.0001
2019-10-21 2019-09-30 13F MINERALS TECHNOLOGIES COM 603158106 500 26
2019-07-25 2019-06-30 13F MINERALS TECHNOLOGIES COM 603158106 500 0 0.00 26 -10.34 0.0001
2019-04-19 2019-03-31 13F MINERALS TECHNOLOGIES COM 603158106 500 0 0.00 29 16.00 0.0001
2019-01-23 2018-12-31 13F MINERALS TECHNOLOGIES COM 603158106 500 0 0.00 25 -24.24 0.0001
2018-10-19 2018-09-30 13F MINERALS TECHNOLOGIES COM 603158106 500 -1,000 -66.67 33 -70.80 0.0001
2018-08-06 2018-06-30 13F MINERALS TECHNOLOGIES COM 603158106 1,500 0 0.00 113 13.00 0.0005
2018-04-20 2018-03-31 13F MINERALS TECHNOLOGIES COM 603158106 1,500 -200 -11.76 100 -14.53 0.0004
2018-01-23 2017-12-31 13F MINERALS TECHNOLOGIES COM 603158106 1,700 0 0.00 117 -2.50 0.0005
2017-10-23 2017-09-30 13F MINERALS TECHNOLOGIES COM 603158106 1,700 -3,800 -69.09 120 -70.15 0.0005
2017-07-26 2017-06-30 13F MINERALS TECHNOLOGIES COM 603158106 5,500 -3,700 -40.22 402 -42.90 0.0018
2017-04-26 2017-03-31 13F MINERALS TECHNOLOGIES COM 603158106 9,200 0 0.00 704 -0.85 0.0030
2017-01-24 2016-12-31 13F MINERALS TECHNOLOGIES COM 603158106 9,200 6,400 228.57 710 260.41 0.0031
2016-10-27 2016-09-30 13F MINERALS TECHNOLOGIES COM 603158106 2,800 600 27.27 197 58.87 0.0009
2016-07-26 2016-06-30 13F MINERALS TECHNOLOGIES COM 603158106 2,200 200 10.00 124 9.73 0.0006
2016-04-25 2016-03-31 13F/A-1 MINERALS TECHNOLOGIES COM 603158106 2,000 1,500 300.00 113 413.64 0.0005
2016-01-28 2015-12-31 13F MINERALS TECHNOLOGIES COM 603158106 500 0 0.00 22 -8.33 0.0001
2015-10-21 2015-09-30 13F MINERALS TECHNOLOGIES COM 603158106 500 -1,400 -73.68 24 -81.40 0.0001
2015-08-04 2015-06-30 13F MINERALS TECHNOLOGIES COM 603158106 1,900 -1,100 -36.67 129 -41.10 0.0006
2015-04-27 2015-03-31 13F/A-1 MINERALS TECHNOLOGIES COM 603158106 3,000 100 3.45 219 8.96 0.0010
2015-04-21 2015-03-31 13F MINERALS TECHNOLOGIES COM 603158106 3,000 219
2015-01-23 2014-12-31 13F MINERALS TECHNOLOGIES COM 603158106 2,900 0 0.00 201 12.29 0.0009
2014-10-29 2014-09-30 13F/A-1 MINERALS TECHNOLOGIES COM 603158106 2,900 -13,800 -82.63 179 -83.65 0.0008
2014-10-20 2014-09-30 13F MINERALS TECHNOLOGIES COM 603158106 2,900 179
2014-07-24 2014-06-30 13F MINERALS TECHNOLOGIES COM 603158106 16,700 1,100 7.05 1,095 8.74 0.0049
2014-04-28 2014-03-31 13F MINERALS TECHNOLOGIES COM 603158106 15,600 -8,100 -34.18 1,007 -29.28 0.0045
2014-01-30 2013-12-31 13F MINERALS TECHNOLOGIES COM 603158106 23,700 -4,300 -15.36 1,424 3.04 0.0064
2013-10-24 2013-09-30 13F MINERALS TECHNOLOGIES COM 603158106 28,000 -3,900 -12.23 1,382 4.78 0.0061
2013-08-12 2013-06-30 13F MINERALS TECHNOLOGIES COM 603158106 31,900 31,900 1,319 0.0057
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.