S&P 500 Signals the US Stock Rally Momentum is Waning

The S&P 500 is signaling a potential slowdown in its rally, having experienced its longest stretch of low volatility since December with 17 consecutive sessions lacking a 1% move. This diminished activity suggests market momentum is waning after its strong rebound from April's tariff-fueled lows, indicating a possible pause in the current upward trend.

Analysis

The US stock market's recent march to record highs is accompanied by underlying signals of weakening momentum. The S&P 500 has experienced a notable period of low volatility, with 17 consecutive sessions failing to produce a move of 1% or more in either direction, the longest such stretch since December. According to analysis from Miller Tabak & Co., this sustained lack of significant price movement indicates that the powerful rally, which began after the tariff-related lows in April, is losing its driving force. This suggests the market may be entering a phase of consolidation or is potentially vulnerable to a shift in sentiment.

Key Decisions for Investors

• Investors should view the extended period of low volatility as a signal of potential market exhaustion and consider tightening stop-losses on existing long positions.
• Given the waning momentum, it may be prudent to exercise caution before initiating substantial new long positions until a clearer directional trend emerges.
• Monitor for a breakout in volatility, as a return to 1%+ daily moves could signal the end of this consolidation phase and the start of the market's next significant leg, either up or down.