Implats said its headline earnings for the six months to December 31 were expected to be 318-338% higher than the previous corresponding period, and headline earnings per share (HEPS) were likely to be 316-336% higher.
"Robust dollar pricing for PGMs, together with rand depreciation and sustained operational delivery, has resulted in higher revenues received by the group during the period," the company said.
AngloGold Ashanti also yesterday tipped a circa three-fold increase in earnings for 2020, despite slightly lower production than a year earlier.
The gold miner, which last year sold its assets in South Africa, said headline earnings and HEPS were expected to be up from 2019's US$364 million and 87c, to $910-$982 million and 216-233c respectively.
Their announcements follow Sibanye-Stillwater, Anglo American Platinum and Pan African Resources similarly forecasting bumper earnings in recent days.
The JSE requires companies to provide a market update if financial results are likely to differ by at least 20% from the previous corresponding reporting period.
AngloGold Ashanti is due to release its full-year results on February 22 and Implats is set to release its half-year results on February 25.
AngloGold shares (JSE: ANG) closed up 0.12% while Implats (JSE: IMP) closed down 0.05% yesterday, with both remaining near one-year highs.
