LIVEMarkets rolling coverageStarted: May 10, 2026, 12:00 AM EDTUpdated: May 10, 2026, 11:59 PM EDT ASX 200 Falls Sharply as CSL Shares Plunge May 10, 2026, 11:59 PM EDT. The ASX 200 index dropped sharply following a significant decline in CSL shares, Australia's leading biotech firm. CSL's stock price sank after the company issued a profit warning, rattling investor confidence. The wider market felt the impact due to CSL's substantial weighting in the index. Other sectors experienced mixed reactions as investors reassessed risk amid concerns about earnings outlooks. **CSL's profit warning** was the catalyst, dragging down the benchmark index and