Streaming video company Roku files for US initial offering

Roku, the maker of devices and software for streaming video that was an early challenger to traditional home-entertainment providers, filed for a US initial public offering.

The company listed an initial offering size of $100 million, which it said is a placeholder used to calculate fees and will probably change. The company plans to use the proceeds for general corporate purposes including research and development and marketing, according to a filing Friday with the US Securities and Exchange Commission.

Roku was an early mover in what is now a crowded market of home devices and streaming tools. It’s a specialist