Sanofi and Takeda-backed Ovid Therapeutics has filed to raise $86.3m in an initial public offering and plans to use the proceeds to advance its neurological disease treatments.

The wind and solar power producer has raised more than $850m in total equity funding, including $200m from Tokyo Electric Power and Chubu Electric Power this year.

The social media company has scored a huge exit from news app Toutiao, exiting as part of a series D round that valued it at $11bn, 22 times the valuation at which Sina invested in 2014.

Tinnitus Treatment Solutions and food standards and sanitation company RF Biocidics are among the casualties of the $146.6m writedown, with capital being diverted to more promising subsidiaries.

The Renren-backed social media platform, once valued at up to $400m, is in talks with Square for an acqui-hire deal.

The corporate-backed music platform is reportedly mulling a public market listing that would not raise money but which would allow investors to divest their shares.

Petco has purchased petcare services platform PetCoach for an undisclosed sum, providing an exit to corporate investors Comcast and Pet360.

Grab has completed the acquisition of Emtek, Gree and Singapore Press Holdings-backed mobile payment portal Kudo for between $80m and $100m.

GV has led a series C round that valued the secondary storage technology provider at more than $500m with backing from Cisco, Qualcomm and Hewlett Packard Enterprise.

Eli Lilly is the oncology antibody developer's largest shareholder, while other investors include Celgene and EMS subsidiary Brace Pharma Capital.