---
symbol: "SP500"
name: "S&P 500"
date: 2026-07-31
change_pct: 1.665873393622085
direction: "up"
event_type: "macro_print"
url: "https://perplo.app/why/SP500/2026-07-31"
updated_at: 2026-07-31T11:06:46.934Z
---

# Why S&P 500 (SP500) rose 1.67% on July 31, 2026

S&P 500 (SP500) rose 1.67% on July 31, 2026 — June inflation decline unlocks broader rally.

## What happened

The S&P 500 surged 1.7% after June inflation data came in softer than expected, easing pressure on rate expectations and triggering a broad risk-on rebound across sectors.

## Why it moved

A softer inflation print reduces the Fed's urgency to hold rates higher for longer, lowering discount rates and supporting equity valuations; Microsoft's rebound in chipmakers adds a secondary tailwind by signaling…

## Why it matters

U.S. equities have stalled over the past month as macro uncertainty rose, but this inflation relief is a genuine reopener—the move reflects both easing rate pressure and a reassertion of the AI-capex theme that has…

## What would break the thesis

If core inflation proves sticky or Fed speakers push back against rate-cut expectations, the rally can fade; the index remains vulnerable to whipsaw if macro data reverts.

## Sources

- [Update: US Equity Indexes Surge as Microsoft Triggers Rebound in Chipmakers While Inflation Rate Falls in June](https://finnhub.io/api/news?id=1ed31f83f774cca94290e9d5855fea12f33bcb9ee6348dc88c937ee1fb68be79) — Yahoo
- [Why fresh volatility means a ‘valuation opportunity’ is opening up in U.S. stocks](https://www.marketwatch.com/story/why-fresh-volatility-means-a-valuation-opportunity-is-opening-up-in-u-s-stocks-9dbef149?mod=mw_rss_topstories) — MarketWatch
- [Nasdaq, S&P 500 Futures Rise As Amazon Reignites AI Trade, Apple Slides: Why TSLA, SPCX, RDDT, SMCI, BE, RKLB Are In Focus](https://finnhub.io/api/news?id=0089ee288e4ffc8b57fb954b54c2e9fc1b67c7732210f4b8542cca2ba36de0dc) — Yahoo

---

Trade SP500 perpetual futures 24/7 onchain: https://perplo.app/asset/SP500