According to @CNBC, the three-year U.S. equity bull market entering 2026 has intensified focus on potential sell signals that traders should monitor to manage risk and position sizing into Q1 2026 (Source: CNBC, Jan 5, 2026). According to @CNBC, the report underscores watching for downside risk conditions and using those signals to adjust exposure and liquidity plans as the cycle matures (Source: CNBC, Jan 5, 2026).