Sectors on the ASX frequently observed by day traders often include resources, technology, healthcare, and financials. These sectors typically feature companies with higher trading volumes and price movements during the day. The materials sector, especially mining and exploration companies, is closely watched due to frequent announcements and commodity-related activity. Technology stocks can show volatility driven by updates or news cycles. Healthcare and biotech firms attract interest around clinical developments. The financial sector, particularly banks and diversified financials, also remains active due to regular market participation and consistent liquidity.