Shares in Givaudan and Symrise were hammered today after the Swiss antitrust agency named them as part of a quartet of companies in the crosshairs of international competition watchdogs.

Swiss competition commission COMCO said its probe was targeting market leaders Givaudan, domestic rival Firmenich, which is merging with Dutch chemicals group DSM, US-based International Flavors & Fragrances and Germany's Symrise.

— Read more in Switzerland joins global cartel probe into $5-billion fragrance market at RTE, or see Fragrance firms hit by price cartel probe at AFP via Yahoo.