The Russell 2000's single-day surge of 2.1% is a signal that must be closely watched.
Previously, the U.S. stock market's performance was long tied to major tech giants, with funds highly concentrated and grouped together. Now, as small-cap indices strengthen, it indicates that market risk appetite is beginning to expand outward, and funds are no longer solely clustered in a few heavyweight stocks.
Whether small caps can continue to follow through in the next week will directly determine the overall health and sustainability of this round of the market trend, making it the key focus for upcoming observation.