Purify Blocker is an ad-blocking app. An earlier version misstated the name.
An earlier version of this NYT article described incorrectly eMarketer's prediction that Pinterest's user base would rise to 47.1 million monthly active users this year and 59.3 million by 2019. Those figure applied only to the United States; they are not worldwide estimates.
Sam Poser is an analyst at Sterne Agee CRT. An earlier version misstated the name of the firm.
An earlier version of this story misstated the name of NBC affiliate WMAQ.
An earlier version of this story transposed the per-share price offered by Altice for Cablevision as $39.40.
This article has been updated to show that FedEx reported earnings excluding items of $2.42 a share.
This article has been updated to reflect the correct month of the report.
Luxoft Holdings is based in Switzerland, and 23 percent of its programmer staff is Russian. An earlier version of this article misstated those facts.
China released economic data on Sunday, Sept. 13. An earlier version misstated the day.
Correction: This story has been updated to reflect when Twitter's stock hit a session low.