(Kitco News) - The 25 largest metals and mining companies by market capitalization gained a median 2.7% in value in November, according to an S&P Global Market Intelligence analysis.

The companies analyzed were worth a cumulative market value of $908.36 billion as of Dec. 1. The median value of the top metals and mining companies increased both month on month and year on year in November, with the market capitalization of the top 25 companies jumping 80.0% year over year.

Diversified miners BHP Group and Rio Tinto are the only two metals and mining companies with market values exceeding $100 billion. BHP's total market value rose 12.6% to $130.27 billion through November while Rio Tinto's increased 11.0% to $108.0 billion. The two companies represent more than a quarter of the world's top 25 metals and mining companies' combined market value.

The greatest percentage gains in market value during November came from Glencore, Zijin Mining and Freeport-McMoRan. Each company saw its market value increased by more than one-third through the month. Especially Zijin Mining, the market value has reached 35billions USD,  which is nearly doubled compared to the beginning of the year.

Companies with a market value decline of 5% or more month over month included Wheaton Precious Metals, Agnico Eagle, Barrick Gold, Newcrest Mining, Polyus and Newmont.