S&P 500's record weekly run faced mounting pressure Friday as traders braced for potential interest-rate increases following robust employment data. The benchmark index's unprecedented streak now hangs in the balance as market participants recalibrate expectations amid shifting monetary policy signals.

Stronger-than-expected job growth has fueled speculation that the Federal Reserve might tighten monetary policy sooner than anticipated. Simultaneously, investors continued rotating away from artificial-intelligence stocks, contributing to market volatility as portfolio rebalancing accelerates ahead of potential rate adjustments.

This confluence of factors suggests significant market rebalancing is underway. Companies heavily dependent on low-rate financing and speculative valuations face particular headwinds. The current environment demands investors reassess risk profiles, with defensive sectors potentially gaining ground as the market digests the implications of tighter monetary policy.