Sonova

Sonova Holding AG (Phonak Holding AG before 1 August 2007) is an internationally active Swiss group of companies headquartered in Stäfa that specializes in hearing care (hearing instruments, cochlear implants, wireless communication). The Sonova group operates through its core business brands Phonak, Unitron, Advanced Bionics, AudioNova and the consumer product division of Sennheiser. According to market analyses, the group and its brands held an estimated 24% of the global hearing aid market in 2013. Between 11 September 2022 and 2026, Sonova was a component of the Swiss Market Index.