Instagram's ruthless copying of Snapchat is working.
The Facebook-owned app announced on Thursday that over 200 million people are using Instagram Stories every day, up from 150 million in January. That means more people are using Instagram Stories than Snapchat, which last reported 158 million daily users in February.
Snapchat's shares slid more than 1.5% on the news to below $20.
Facebook has continued to aggressively copy Snapchat's core features since adding Stories to Instagram last August. Messenger, WhatsApp, and the main Facebook app have all since added Stories, the format Snapchat pioneered that shows photos and videos shared in chronological order that disappear after 24 hours.
Facebook has said that adding Stories to its suite of apps causes people to share more at a time when the company has reportedly battled a decline in sharing. Snapchat has long maintained that the ephemeral format encourages its users to share more often and expressively.
The growth of Instagram Stories comes at a time when intense pressure is on Snapchat to grow its user base. The app's growth slowed after Instagram added Stories last year, and investors are eager to see if growth has re-accelerated when Snap reports its first quarterly earnings on May 10th.
SEE ALSO: Instagram continues its attack on Snapchat with disappearing direct messages
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