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    Wittbecker on aluminum: Another Trump tariff flip-flop brings more market turmoil

    Written by Greg Wittbecker


    Last week saw more tariff turmoil as the Trump administration flip-flopped again. In case your scorecards are not up to date, here is where things stood at the end the week:

    • 1. Jan. 21: Promised tariffs on Canada and Mexico
    • 2. Feb. 1: Officially announced tariffs on Canada and Mexico
    • 3. Feb. 3: Delayed Canada and Mexico tariffs 30 days
    • 4. Feb. 27: Announced tariffs would go into effect March 4 for both countries
    • 5. March 4: Implemented the 25% tariffs on Canada and Mexico from midnight
    • 6. March 5: Suspended tariffs on autos for one month
    • 7. March 6: Suspended broad country-of-origin tariffs for one month, provided they comply with USMCA rules of origin

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    AMU: Edward Meir’s week in review and thoughts for the week of Oct. 12, 2026

    Base metals had a mixed week. Tin lost almost 4% on the week, finishing at $53,000/ton. Prices dropped to a low of $51,259/ton at one point. Aluminum was another loser, off by about 1.6% on the week. Investors are expecting more aluminum supply going forward, especially out of China and Indonesia. Copper prices tacked on 1.1%. They have now recovered more than half of the $700/ton loss sustained (over the course of a week) following reports/rumors in mid-September that US tariffs on refined copper imports might not proceed after all.