The S&P 500 has flashed a warning signal. Here's what it means and how to protect your portfolio.

A trader works on the floor of the New York Stock Exchange.

Angela Weiss/AFP/Getty Images

• The S&P 500's recent dip below its 200-day average hints at potential downside ahead.
• Lance Roberts of RIA Advisors suggests watching six technical indicators to assess market health.
• Roberts advises investors to trim large positions and hold cash to mitigate potential losses.

The S&P 500 crossed below its 200-day moving average last week as the benchmark index continues to struggle in 2026.