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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 limited public snapshot archived for this date. The complete historical edition remains available only through the account 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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