Investors face a week rife with risks, as worries about stock-market euphoria mount. Here’s what to watch. - MarketWatch

1. S&P 500 hits record levels, echoing the 2021 market peak. 2. Upcoming earnings reports may indicate slowing profit margins and volatility. 3. Trade deal deadlines loom, creating potential market uncertainty. 4. Fed's interest rate outlook could affect market sentiment this week. 5. Labor market reports could surprise investors, impacting S&P 500 movement.