"its ownership" is correct and usable in written English.
You can use it when referring to a possessive form of a noun. For example, "The company's success is attributed to its ownership."
As Europe's largest shareholder it has taken its ownership responsibility to heart with typical Nordic earnestness.
So it stood unused, its ownership passing from one person to another.
It later increased its ownership stake to more than 10%.
It is involved through its ownership of the Dutch bank ABN Amro.
Experts said it has puzzling gaps in its ownership history.
Instead, the Montreal Exchange said it was looking to increase its ownership in the options exchange.
In 1931 it combined four smaller airlines under its ownership into United Airlines.
Its ownership of the Columbia archives gives it a rich store of ancient treasures.
Canada supports strong native traditions - it's also a way of reinforcing its ownership of the north.
It is only a year since esure took its ownership from 50%to100%0%.
Its ownership of Enron was a liability, but it deservedly remains a giant.
