Summary

• The ASX 200 fell 0.9% at Monday's open, before recovering to be nearly flat 
• Tech stocks were the hardest hit at the start of trade, with Afterpay down as much as 4.3 per cent to $74.82 
• Deals signed by biotech CSL could see a COVID-19 vaccine release in Australia by early next year
• Melbourne's stage four lockdown will be extended for two weeks beyond the original end date of September 13, while stage three restrictions will ease slightly in regional Victoria