Chile's benchmark IPSA index closed at 10,840 on June 30, rising 0.71% to secure a third consecutive session of gains.
The advance marks a decisive technical break, with the index pushing through a resistance level that had capped rallies for weeks.
Mining stocks were the primary drivers of the move, benefiting from a synchronized lift in copper prices and stability in the local currency.
The sustained upward momentum signals a shift in sentiment for Latin American equities, which had previously struggled to maintain gains amid broader global volatility.
The peso's steadiness provided additional support for miner valuations, reducing currency headwinds for exporters reporting in local terms.
This combination of commodity strength and currency stability created a favorable environment for the sector-heavy index.