Sandfire Resources Ltd (ASX:SFR) experienced a significant intraday surge, with its stock price soaring 9.17% during Tuesday's trading session.

The sharp upward movement follows the company's recent inclusion in the FTSE All-World Index (USD), which was announced on March 21, 2026. Index inclusion typically triggers automatic buying from index-tracking funds and exchange-traded funds (ETFs) that benchmark against the FTSE All-World Index, creating incremental demand for the stock.

This development is expected to broaden Sandfire Resources' international shareholder base and potentially improve the stock's liquidity. While the index inclusion represents a structural shift in the company's investor profile, analysts note that the fundamental investment thesis for Sandfire remains tied to copper market dynamics and the company's ability to deliver on its production guidance at key operational hubs.