Shares in Havilah Resources closed up more than 50 per cent on Friday, after it announced a partnership with multibillion-dollar copper player Sandfire to take advantage of a major copper-gold deposit in the state’s northeast.

The pair would advance the Kalkaroo Copper-Gold Project and establish an exploration partnership across the “highly prospective” Curnamona Province, 450 km northeast of Adelaide.

Shares in Havilah closed out the week at 44 cents per share, having opened at 27 cents last Monday, and was the week’s Winner by a large margin.

In a joint announcement to shareholders, the companies said the agreement would create “a rapid pathway to unlock one of Australia’s largest undeveloped open pit copper-gold deposits by bringing together Australia’s largest listed, independent copper producer and a local partner and proven explorer”.

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Sandfire would commit $30 million to exploration activities over the next two years under the agreement, and would acquire an 80 per cent interest in Kalkaroo from Havilah for up to $210 million, comprised of cash and Sandfire shares.

Electrical engineering company Mayfield Group was another Winner, rising 18 per cent after resuming trade following a private placement to institutional investors.

The $30 million capital raise would fund Mayfield’s pipeline of potential acquisitions and other initiatives to increase its manufacturing capabilities.

The Winners succeeded in an otherwise dire week for the top 200 ASX-listed companies, which shed 1.5 per cent in value, making it a third straight week of losses that now has markets down about 5 per cent from its yearly peak.

There was little news from the Losers, but 1414 Degrees and Axiom Properties both fell 13.33 per cent.

The full list of Winners and Losers for the week ended November 14, 2025:

Data via Baker Young Limited analysts.