Big Tech boosted US stocks as August began, kicking off a busy week of earnings and ahead of a fresh look at the health of the labor market on Friday. The tech-heavy Nasdaq Composite (^IXIC) led the major indexes higher, rising 2.1%, while the S&P 500 (^GSPC) gained 1.5%. The Dow Jones Industrial Average (^DJI) also increased 1.3% to close at a record high after a volatile July ended on a high note last week. A turn toward diplomacy in the war between the US and Iran lifted market sentiment on Monday. The key report to watch this week, however, is Friday's jobs report, which is expected to show further employment gains in July.