ASX Biggest Losers Today: Cogstate, Immuron and GQG Partners Lead Australian Stock Market Declines (10 December 2025)
Cogstate shares fell over 16% to $2.10 after the company cut profit and revenue guidance, triggering heavy selling. The S&P/ASX 200 hovered near flat by mid-session, masking sharp losses in healthcare, speculative miners, and financials. Immuron plunged 37%, Tusker Minerals dropped 27%, and Janus Electric slid 24%. The 10-year Australian bond yield rose above 4.8%, pressuring growth stocks.
