Metal stocks surge up to 18% in 2026: Top 6 gainers powering the rally. How many in your portfolio? by ET Markets | January 15, 2026 2:03 pm | Indian Stocks, Market, News Metal stocks have gained up to 18% in 2026, lifting the Nifty Metal index to joint-best performer status. Rising silver prices, tight copper supply, policy support and capex momentum have driven gains in NALCO, Vedanta, Tata Steel and others.