Nov 4, 2026, 22:15 UTC
Japanese stocks listed in the item moved on November 4, with the named shares and their closing prices and changes shown in the report.
Source:Oct 30, 2026, 08:06 UTC
Mitsui Mining & Smelting formulated a third production-expansion plan for its ultra-thin copper foil used in optical communications equipment in fiscal 2026, bringing forward the existing plan amid strong AI data-center demand.
Source:Oct 24, 2026, 23:05 UTC
Tokyo Stock Exchange Prime Market data showed margin short positions declining from October 9 to October 16, led by Fujikura, Daiwa House Industry and Advantest.
Source:Oct 23, 2026, 22:32 UTC
Japanese stocks listed in the item moved on October 23, with the named securities recording the reported closing prices and daily changes.
Source:Oct 17, 2026, 23:10 UTC
The Tokyo Stock Exchange Prime credit-buying balance ranking reported increases from October 2 to October 9, led by Mitsui Mining & Smelting (+4.498 million shares), SoftBank Group (+4.197 million) and Kioxia (+3.330 million).
Source:Oct 17, 2026, 23:05 UTC
Tokyo Stock Exchange Prime Market data showed week-over-week declines in margin short positions for the listed stocks, led by Aozora Bank (down 1.476 million shares), Kioxia (down 1.072 million), and Furukawa Electric (down 999,000).
Source:Oct 15, 2026, 09:05 UTC
Japanese stocks moved on October 15, with Kioxia Holdings and other semiconductor-related shares falling while several other listed stocks rose.
Source:Oct 15, 2026, 07:19 UTC
Mitsui Mining & Smelting will provide Radio Nano Therapeutics with its expertise on nanoparticles used in the startup's cancer-treatment drugs.
Source:Oct 15, 2026, 07:19 UTC
Mitsui Mining & Smelting and Kyoto University Innovation Capital invested in Radio Nano Therapeutics in its Series B funding round.
Source:Oct 14, 2026, 22:15 UTC
The listed Japanese stocks recorded the reported closing prices and daily changes on the 14th.
Source:Oct 14, 2026, 22:15 UTC
Mitsui Mining & Smelting held a small-group meeting on the 13th.
Source:Oct 6, 2026, 22:15 UTC
Japanese stocks moved on the day, including the listed shares and price changes reported in the item.
Source:Sep 25, 2026, 03:30 UTC
Mitsui Mining & Smelting announced it signed a joint development agreement with a U.S. startup on the practical application of all-solid-state batteries using its A-SOLiD sulfide solid electrolyte material.
Source:Sep 17, 2026, 11:00 UTC
Solid-state battery maker Factorial Energy partnered with Mitsui Kinzoku to scale up sulfide-based solid electrolyte technology.
Sep 9, 2026, 21:00 UTC
Gelion secured a joint development agreement with Mitsui Kinzoku to validate its NES Cathode Active Material in sulfur battery cells, with £2m in staged milestone payments.
Source:Aug 17, 2026, 09:40 UTC
Mitsui Mining & Smelting announced on August 17, 2026 that it will increase production of ultra-thin copper foil for AI data centers to 2.4 times the fiscal 2025 level by fiscal 2033, acquiring land near its existing Malaysian site to build a new plant, with investment amount undisclosed.
Aug 12, 2026, 07:15 UTC
Gelion PLC announced a funded development and scale-up agreement with Mitsui Kinzoku to validate its Nano-Encapsulated Sulfur cathode technology in liquid and solid-state battery cells, including £2 million in milestone-based funding and an option for Mitsui Kinzoku to negotiate manufacturing and distribution rights in certain Asian territories.