Minerals Technologies Inc (MTX): Congress and insider trades
Who in Congress and inside the company traded MTX, when each filing appeared, and what buying after each one would have earned against the S&P 500.
Key Facts
- Minerals Technologies Inc (MTX) is a listed stock on NYSE.
- 2 members of Congress filed 3 buys and 1 sell of MTX, the latest published 2026-09-07 (7 September 2026).
- Across 1 scored buy, Congress averaged -8.4% against the S&P 500 (SPY) over the 90 days after disclosure, with 0% of them ahead of the index. That result is too few trades to tell.
- Data as of 2026-09-29 (29 September 2026).
Congress trades in MTX
as of 2026-09-07| Filed | Member | Type | Size | Days to file | 90 day vs S&P |
|---|---|---|---|---|---|
| 7 Sep 2026 | Gil Cisneros (D-CA) | buy | 1K–15K | 56 | n/a |
| 16 Feb 2026 | Gil Cisneros (D-CA) | sell | 1K–15K | 39 | n/a |
| 11 Jan 2022 | Josh Gottheimer (D-NJ) | buy | 1K–15K | 26 | -8.4% |
| 16 Dec 2020 | Gil Cisneros (D-CA) | buy | 1K–15K | 32 | n/a |
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Related pages
Frequently asked questions
Who has bought MTX?
3 Congress buys by 2 members and 0 insider buys are on file. The tables on this page list every one.
Did buying MTX after a disclosure beat the market?
Across 1 scored buy, Congress averaged -8.4% against the S&P 500 (SPY) over the 90 days after disclosure, with 0% of them ahead of the index. That result is too few trades to tell. A single stock is a small sample.
Sources: Congressional trades: STOCK Act disclosures, collected from CapitolTrades. Insider trades: SEC Form 4 filings, collected from Finviz. Prices: Yahoo Finance daily adjusted closes. Data as of 2026-09-29 (29 September 2026). About these sources.
Not investment advice. Past disclosed trades do not predict future returns. Disclosures are published late, so the trades shown are ones you could only have copied after the fact. Talk to a licensed adviser before you invest.