【Market News】 Sumishi HD and EDP Set for Limit-Up Opening; “Synthetic Diamond Production in US” Investment Report Continues to Drive Sentiment

Editor’s Note

This article discusses market movements and reported catalysts for specific stocks. Readers should conduct their own research and exercise caution, as market conditions can change rapidly.

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Market Movement

Sumishi Holdings <1514> and EDP <7794> are indicated to open at limit-up levels. Both stocks ended the previous trading session at their daily limit-up prices.

Catalyst

During trading hours on the 27th, Reuters reported on the $550 billion investment and financing plan for the US based on the Japan-US tariff agreement.

“It has been learned that a plan to produce synthetic diamonds within the United States is a leading candidate.”
Market Reaction

Following this report, stocks related to synthetic diamond businesses have attracted buying interest in the stock market. Investment funds are once again concentrating on EDP, which manufactures synthetic diamond raw materials, and Sumishi HD, a group company engaged in the production of industrial synthetic diamonds.

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⏰ Published on: January 28, 2026