Wall Street Wrap: How the S&P 500, Dow and Nasdaq Performed
October 19, 2026 | ATN Trade & Finance
The week ending October 16 delivered the sharpest divergence between the Dow Jones and the Nasdaq since the spring — the two indexes moved in opposite directions by more than five percentage points.
The S&P 500: A Down Week on Inflation
The S&P 500 fell 1.95% for the week, closing Friday at 7,659.44 — down 1.09% on the day alone. That was the index's worst weekly drop since the week ending June 26. The proximate cause was the September CPI report, released October 14, which came in at 3.7% year-over-year. The preceding day's September PPI print of +1.3% month-over-month — more than double the forecast — had already set a bearish tone. Of the 11 S&P 500 sectors, six rose on the week and five fell. The index logged 19 new 52-week highs but also 1 new low. Year-to-date, the S&P 500 stands at +11.9%.
The Nasdaq: Worst Week Since June
The Nasdaq Composite dropped 4.48% for the week, closing at 26,140.03 after a 2.14% slide on Friday alone. Technology (XLK) was the hardest-hit sector, down 7.70% on the week, and the Philadelphia Semiconductor Index fell 11.41% — its worst weekly performance since April 2025. The selloff was concentrated in AI infrastructure and chip names: Nvidia fell 6.61%, Broadcom dropped 9.07%, Tesla lost 7.31%, and memory stocks including Micron shed 14.59%. The Nasdaq logged 263 new 52-week lows versus just 49 new highs on Friday. Year-to-date, the Nasdaq is still up +12.5%, but the week erased roughly three months of outperformance in five days.
The Dow: The Outlier
The Dow Jones Industrial Average gained 0.67% for the week, closing at 52,002.41 — its second consecutive weekly advance. The Dow's resilience reflected its heavier weighting in industrials, health care, and consumer staples versus the high-multiple tech and chip stocks that bore the brunt of the rate repricing. Coca-Cola rose 6.64%, Walmart gained 6.70%, and Procter & Gamble added 5.37% — defensive names that benefited from a rotation out of growth. Apple, the one megacap tech name that finished the week in the green, rose 2.03% and also contributed to the Dow's hold. Year-to-date, the Dow is up +8.2%.
The Week's Other Signals
The VIX closed the week at 19.99, up 34.70% — a significant spike in fear that stopped short of the 20 threshold that historically marks elevated stress. The 10-year Treasury yield ended the week at 5.098%, actually lower than the 5.244% it stood at on October 9, despite the hotter-than-expected inflation data — suggesting markets are pricing the Fed as constrained rather than emboldened to hike aggressively. WTI crude rose 10.41% on the week to $101.41, driven by Hormuz tanker attacks and a draw in US crude inventories, amplifying pressure on consumer-facing and energy-intensive sectors.
What this means: The week was a stark rotation trade: out of high-multiple AI and chip stocks, into defensive and value names with predictable cash flows. The Dow's relative strength versus the Nasdaq's near-5% loss in a single week is a signal investors should watch — it reflects where earnings visibility is holding up under a higher-for-longer rate environment. The October 28 Fed decision is the next major catalyst; a rate hike would likely extend the tech and small-cap selling, while a hold could trigger a relief rally in the Nasdaq.
Sources: