First, a quick vocabulary lesson. When economists talk about the Fed "pausing," they mean the central bank chose to leave its benchmark interest rate exactly where it is — in this case, sitting in a range between 4.25% and 4.50% — rather than raising or cutting it. Think of it as the Fed watching the road before deciding whether to hit the gas or the brakes.

Now here's why that matters to you.

Inflation gave the market a small gift this week. Core CPI — a measure of price increases that strips out the volatile swings in food and energy costs — came in at 2.4%, a tick below the 2.5% that analysts had expected. That may sound like a rounding error, but on Wall Street, a single decimal point can move billions of dollars. Lower inflation means the Fed has more room to eventually cut rates, and investors wasted no time pricing in that possibility.

The biggest winners were small-cap stocks. The Russell 2000 index, which tracks roughly 2,000 smaller American companies, climbed 1.8% — outpacing its large-cap counterparts by a meaningful margin. If you hold shares of NIXX or track the small-cap space through an ETF like IWM, that's the index your investment mirrors. Small companies tend to carry more floating-rate debt than their larger peers, so when rate-cut hopes rise, their borrowing costs look less punishing and their stocks often rally first.

Bond markets told the same story in a different language. The two-year Treasury yield — which moves in close step with expectations for Fed policy — dropped 11 basis points. A basis point is one one-hundredth of a percentage point, so that's a meaningful single-session move, signaling that traders are repositioning for cheaper money ahead.

Fed Chair Jerome Powell kept his cards close. He reiterated that future decisions will depend on incoming data rather than a preset schedule — the phrase the market knows as "data-dependence." Traders interpreted his tone as cautiously optimistic: futures markets now price in roughly a 62% probability of a rate cut arriving as soon as September.

The bottom line for everyday investors: one cooler inflation reading does not guarantee a rate cut, and markets can reprice quickly if the next data release surprises to the upside. But for now, the combination of a patient Fed and softening inflation is the kind of environment where small-cap exposure — through names like IWM — has historically found its footing.