Sigma Lithium (TSXV, NASDAQ: SGML) surged to a one-month high on Friday as investors welcomed its second-quarter production increase and cost reduction, despite missing analyst expectations for earnings.
During the three months ended June 30, 2025, the company’s production of lithium oxide concentrate totalled 68,368 tonnes, representing a 38% year-on-year increase. The output exceeded its quarterly target of 67,500 tonnes.
The Brazil-focused lithium miner also kept costs down, with all-in sustaining cash costs (AISC) coming in at $594/t, below its target of $660/t and 24% lower than the $779/t from a year ago.
Despite the higher production, total sales volume dropped 23% over Q2 2024 to 40,350 tonnes, which Sigma’s management attributes to its strategy to withhold products during intense volatility in the global lithium market.
As a result, revenue fell significantly compared to the 2024…
