Inflation Just Spooked the Market -- But There's Still Good News for Patient Investors

September's hot inflation print sent equities lower, with SPY tracking the S&P 500's 1.1% drop while the Nasdaq sank 1.8%. Consumer prices rose 0.6% month over month and 3.7% year over year, the data point that drove the selloff.

The tech-heavy Nasdaq fell harder than the S&P 500, a gap of 0.7 percentage points. That is interpretation, not reported fact, but the spread suggests growth-oriented names bore the brunt of the repricing after the CPI release.

The Motley Fool piece pushes back on the panic with a long-horizon example. A $10,000 investment in the S&P 500 index made in October 2006, ahead of the financial crisis, grew to roughly $81,000 by October 2026 with dividends reinvested. That return came despite multiple market crashes and well outpaced inflation. The article's argument: staying invested through drawdowns has historically beaten trying to dodge them.

For active traders, the takeaway is a split between horizons. The 0.6% monthly CPI reading is a short-term headwind that the market priced immediately, while the 2006-to-2026 example frames single-day selloffs as noise against a multi-decade compounding path.