Take context from the input text and decide on the accurate relationship between 'Rosneft' and 'Moscow' from the options provided.
Options: business division, chairperson, subsidiary, location of formation

Shares (Berlin: DI6.BE - news ) in Rosneft fell 0.65 percent by 1002 GMT, underperforming a 0.3 percent rise in the broader Moscow stock market.
location of formation