A rare technical indicator in US equity markets has reached its highest level since 2015, signaling elevated risk for the broader market and specifically challenging the momentum of the semiconductor sector.

The activation of this signal, which historically carries a 67% probability of a subsequent bear market, marks a sharp shift in the risk landscape just as the second quarter draws to a close.

MarketWatch reported the emergence of this rare risk metric, highlighting the disconnect between the ongoing chip rally and underlying market stability.

The development comes as the broad-based rally in US-listed semiconductor equities encounters significant headwinds.

Investors are growing increasingly cautious about the sustainability of artificial intelligence-driven growth, with the technical warning adding weight to concerns that the sector may be overextended.

The signal suggests that the repricing of risk is not merely a sector-specific correction but part of a wider market regime change.

MarketWatch reported the emergence of this rare risk metric, highlighting the disconnect between the ongoing chip rally and underlying market stability.