Shares in copper miner Freeport-McMoRan (NYSE: FCX) rose 10.5% in November, according to data provided by S&P Global Market Intelligence. While that might not seem a significant move, management outlines that a $0.10 change in the price of copper impacts $425 million in its earnings before interest, taxation, depreciation, and amortization (EBITDA) in 2024/2025. As such, the decline in market interest rates over the last month (following some better news on the inflation front) has encouraged investors to raise expectations for economic growth.