Blackstone-Backed Mobile Ad Company Liftoff Files for US IPO

Liftoff Mobile Inc., a company that helps place ads within mobile applications and lets publishers manage their inventory, filed for a US initial public offering.

The Blackstone Inc.-backed company had a net loss of $25.6 million on revenue of $491.6 million in the nine months ended Sept. 30, compared with a net loss of $7.4 million on revenue of $377.1 million a year earlier, according to its filing Tuesday with the US Securities and Exchange Commission.