The S&P/ASX 200 edged 0.1% lower to below 8,830 on Friday, extending losses from the previous session, with healthcare and technology stocks leading the decline. Sentiment was pressured by the rollout of US retaliatory tariffs, which took effect at midnight and ranged from 10% to 41%. At home, caution deepened due to Trump’s pharmaceutical tariff threat of up to 250%, which could impact major Australian exporters like CSL, alongside a recent 100% levy on semiconductors. In corporate news, ASX Ltd remained under scrutiny after a $35 million hit linked to an ASIC inquiry over a trading error. Among healthcare stocks, biotech giant CSL (-0.9%) and Telix (-3.9%) led losses. Tech shares Wisetech and Xero fell 1.2% and 0.6%, respectively. Major banks also slipped ahead of earnings due next week, while energy stocks were pressured as oil prices hit two-month lows. Still, the index is on track for a 1.9% weekly gain — its first rise in three weeks - amid hopes of an RBA rate cut on August 12.