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Market briefing · Historical edition

Market Brief — September 19, 2026

Weekend brief · Friday close, as of 16:00 ET · Neutral

By Alina KhayBrief generated Archived

This edition preserves the first public snapshot archived for this date. It contains selected public coverage; the complete feed remains available through the latest dashboard’s access plan. Prices and event expectations reflect their original timestamps.

Market levels

At publication

S&P 500

7,650.50
+0.17%

As of 2026-09-18T20:00:00Z

Sources: query2.finance.yahoo.com source 1 · apnews.com source 2

Nasdaq Composite

26,522.54
+0.39%

As of 2026-09-18T20:00:00Z

Sources: query2.finance.yahoo.com source 1 · apnews.com source 2

Gold

4,351.90
-1.29%

As of 2026-09-14T21:00:00Z · marked stale in the source edition

Sources: query1.finance.yahoo.com source 1 · ca.finance.yahoo.com source 2

Silver

63.51
-1.61%

As of 2026-09-14T21:00:00Z · marked stale in the source edition

Sources: query1.finance.yahoo.com source 1 · comexlive.org source 2

Key market developments

Selected coverage

AI warnings pull chipmakers and the Nasdaq lower

The S&P 500 slipped 0.48% and the Nasdaq lost 0.56% as warnings from leading AI executives triggered a global selloff in chip and AI-linked shares. Nvidia fell 3.4% and the Philadelphia semiconductor index dropped 5.9%.

High · Last reported: 2026-09-14T20:18:18Z

Sources: apnews.com source 1 · ca.investing.com source 2

The 10-year Treasury yield briefly crosses 5%

The benchmark yield moved above 5% for the first time since 2023 before easing to about 4.98%. Higher oil prices, sticky inflation and heavy borrowing kept pressure on bonds ahead of the Fed meeting.

High · Last reported: 2026-09-14T20:00:00Z

Sources: apnews.com source 1 · ca.investing.com source 2

Oil rises again as Middle East supply risks persist

Brent settled 1% higher at $105.68 after approaching $110 as new strikes on Saudi energy infrastructure and attacks on shipping reinforced supply concerns. A key Saudi pipeline is expected to remain mostly unavailable for weeks.

High · Last reported: 2026-09-14T20:00:00Z

Sources: apnews.com source 1 · ca.investing.com source 2

Fed meeting begins with a rate increase widely expected

The Federal Reserve begins its two-day meeting today. Traders are assigning roughly a 90% chance to a quarter-point increase on Wednesday as policymakers confront stubborn inflation and the renewed oil shock.

High · Last reported: 2026-09-15T04:04:34Z

Sources: apnews.com source 1 · federalreserve.gov source 2 · cmegroup.com source 3

Software rebounds while semiconductor shares retreat

ServiceNow gained 7.4%, Adobe rose 5.3% and Workday added 4.6%, helping broader market breadth even as Nvidia, Micron, Broadcom and AMD fell sharply. More S&P 500 stocks advanced than declined despite the index loss.

Medium · Last reported: 2026-09-14T20:00:00Z

Sources: apnews.com source 1 · ca.investing.com source 2

What changed from the preceding session

Friday's rebound gave way to a modest decline

The S&P 500 moved from a 0.86% Friday gain to a 0.48% Monday loss, while the Nasdaq shifted from a 0.96% gain to a 0.56% decline.

Stocks

Sources: apnews.com source 1 · apnews.com source 2

AI hardware leadership reversed

Friday's hardware rally turned into a broad semiconductor selloff: Nvidia lost 3.4% and the chip index fell 5.9%, while recently pressured software shares rebounded.

Technology

Sources: reuters.com source 1 · ca.investing.com source 2

Watchlist at publication

Rates after the September Fed increase

Markets will weigh the new 3.75% to 4.00% federal-funds target and the outlook for further tightening.

None

Sources: federalreserve.gov source 1

Oil and Middle East supply risk

Energy developments remain a key input for inflation expectations and bond yields after a volatile week for crude.

None

Sources: apnews.com source 1

Selected company moves

ServiceNow (NOW) · +7.41%

Shares rebounded with enterprise-software peers after recent selling driven by fears that AI competitors would pressure margins.

As of 2026-09-14T20:00:00Z

Sources: finviz.com source 1 · ca.investing.com source 2

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