Slower sales growth also weighed on the stock but "new products and services can provide a second wind to growth as the year progresses."
“I believe Square is building the most innovative commerce ecosystem for sellers and consumers," Ahuja says.
Sarah Friar's six years at Square included an IPO — an experience she may repeat as CEO of social network Nextdoor.
Kayvon Beykpour will oversee product as Twitter switches to "a pure end-to-end functional organization."
The fourth quarter "was a breath of fresh air for investors that have patiently awaited for this turnaround story to manifest after years of pain."
The payments company's top-line growth was driven by a 31% increase in gross payment volume to $17.4 billion.
The company's shares jump more than 18% as Q3 earnings top estimates and it forecasts "we will likely be GAAP profitable" in the next quarter.
The social media site added no monthly users in Q2, dashing the hopes of investors after a growth surge earlier in the year.
“Key question: Can Segal help Twitter tell a more convincing story to investors?”
"There isn't a growth story here," an analyst says. "They have to convince advertisers they will reach an expanding audience.”
The acquisition of Magic Pony gives the social media firm the opportunity to strengthen its video offerings Periscope and Vine.
The "honeymoon is over" for new CEO Jack Dorsey after Twitter reports only four million new users and provides a weak fourth-quarter forecast.
