Options positioning across the most actively traded S&P 500 stocks indicates that market participants are increasingly betting on an earnings breakout for the so-called "Magnificent Seven" technology giants.

A new survey of volatility measures points to a shift in sentiment, with traders positioning for a rebound in the group that has historically driven the index's performance.

This derivatives signal arrives as the collective underperformance of these seven tech stocks has become a significant headwind for the broader US equity market.

The narrowness of the current rally has been exposed by the group's lag, with momentum-driven equities suffering their fourth-worst performance in 22 years.

The recent selling pressure highlights the vulnerability of the market's reliance on a handful of large-cap names.

For the S&P 500 to break through to new record highs, the Magnificent Seven will likely need to regain their momentum.