The number of subscribers to Netflix's ad-supported tier has tripled, reaching 15 million.

• Netflix announced that its ad-supported tier has gained 15 million monthly active users worldwide.
• The latest figure, disclosed in May, is triple the previous one, and represents significant growth for Netflix since introducing the new subscription option a year ago.
• Netflix launched an ad-supported plan and intensified its password-sharing policy in a bid to boost revenue as its subscriber growth rate slows down.

Its ad-supported tier has amassed 15 million global monthly active users, said Wednesday.

The latest figure, disclosed in May, is triple the previous one, and represents significant growth for Netflix since introducing the new subscription option a year ago.

Shares of Netflix closed up roughly 2% Wednesday.

Netflix launched an ad-supported plan and intensified its password-sharing policy in a bid to boost revenue as its subscriber growth rate slows down.

Netflix's third-quarter report revealed that it surpassed Wall Street expectations by adding 8.8 million subscribers, and anticipates a similar growth rate in the fourth quarter.

Netflix is considering enhancing its advertising options with new features that will benefit both advertisers and users.

Amy Reinhard, the newly appointed President of Advertising, announced in a blog post on Wednesday that advertisers can now opt for 10-, 20-, and 60-second ads, in addition to the 15- and 30-second spots previously available. This change will enable advertisers to utilize various formats globally.

Netflix announced that it will provide ad tier users with higher 1080p streaming resolution, in addition to 720p, and enable downloading of movies and series to devices starting this week.