The company said its net profit in the second quarter of the year was 25.93 billion rubles ($1.1 billion), compared with a net loss of 21.83 billion rubles ($935.7 million) in January-March. The first-quarter loss was due to write-downs of the company's investments.
In the first half of 2007 the company made a profit of 77.95 billion rubles.
Norilsk Nickel accounts for more than 20% of global nickel output, more than 10% of cobalt production and 3% of copper.
The company's share on the Russian nickel market stands at around 96%. It accounts for 55% of domestic copper production and produces 95% of Russia's cobalt.