US President Donald Trump plans to slap a 50% tariff on copper imports as part of a series of industry tariffs to be implemented soon.New York copper futures once surged 17%, marking the largest intraday increase since at least 1988, though it narrowed its gains to 13% at market close and ebbed 1.6% during electronic trading hours.Related NewsCiti: US 50% Tariff on Copper Reduces Import Demand; Int'l Copper Price Expected to Fall to US$8,800 per Ton in Next 3 MthsRelated Hong Kong-listed stocks indicated a descending pattern after the market opened. JIANGXI COPPER (00358.HK) -0.180 (-1.160%) Short selling $14.42M; Ratio 29.690% opened 3.5% higher at HKD16.16 but last slipped 1.9% to HKD15.32. CMOC (03993.HK) -0.060 (-0.748%) Short selling $23.58M; Ratio 28.819% last dived 5.6% to HKD7.97 after hitting a historical high of HKD8.54 with a surge of 1.2%. ZIJIN MINING (02899.HK) +0.200 (+0.980%) Short selling $84.98M; Ratio 40.231% opened flat. It was last at HKD19.78, down 4.4%.(HK stocks quote is delayed for at least 15 mins.Short Selling Data as at 2025-07-16 12:25.)