Instagram's Stories now have 250 million daily active users, up from 200 million in April, according to the company. At the same time, engagement with Snapchat Stories declined 50 percent in June compared with the same time last year, according to new numbers from social analytics company Delmondo.

"We saw a decline of 50 percent in average unique viewers per story from June 2016 to June 2017," says Delmondo CEO Nick Cicero, who looked at engagement across 50,000 Snapchat Stories from brands, publishers, and other influencers. 
The new metrics highlight just how damaging the meteoric rise of Instagram Stories has been for the newly public Snap Inc. The company declined to comment on Delmondo's findings. 

Delmondo's report comes on the heels of a rough couple of weeks for the company. Snap's first ever earnings report was a hard miss, third-party data from Sensor Tower says downloads are on the decline, and last week the company's stock hit an all-time low since going public earlier this year.