The miner shed over 3.7% after two of its business divisions — Amplats and Kumba — warned they expected full-year earnings to shrink more than previously flagged.
December is a period that sees lower levels of exploration and resource announcements, and last month was every bit as disappointing as expected, an SNL report shows.
The company pointed to the transition of its Argyle mine from open pit to underground, as well as a shift toward processing lower-grade ore at Diavik as the main reasons for the drop.