Sigma Lithium (SGML) +13.2% pre-market Friday after denying "fake news" reports speculating about the status of the safety of ...

The Sigma 17-40mm f/1.8 DC is a majorly impressive zoom lens, and fills a huge gap especially for the Canon RF-mount ...

HIGHLIGHTS Sigma Lithium announces the sale of 100,000 tonnes of high purity lithium fines for a price higher than the ...

The future continues to look very bright for the company's material of choice.

Taking a more bearish stance, Canaccord downgraded Sigma Lithium to hold from buy yesterday. The increasingly pessimistic ...

Six Sigma refers to a data-driven approach used by companies to upgrade their business processes. The method uses a five-step methodology to eliminate defects at all stages within a company. Six Sigma ...

Is what's good for lithium prices good for all lithium producers -- or only Albemarle?