# The S&P 500 and Nasdaq Post Biggest Gains in Six Weeks

> **Newsylist Open Intelligence Dossier** · First detected: 2026-09-18 16:29 UTC · Category: Business · Sources: 4 · Current Velocity: 2

## Key People, Organizations & Locations
Nasdaq, Biggest, Weeks, SIX, Gains, Post

## Multi-Source Evidence Table
| Source Outlet | Headline | Published (UTC) | Verification URL |
|---|---|---|---|
| WSJ | Investors Come Back to AI Stocks, Snapping Market Out of Inflation Gloom | 2026-09-17 21:34 | [Source Link](https://news.google.com/rss/articles/CBMitgFBVV95cUxPeUM3ZTltRXIxOVEwYXZjVy1rbjlfVmtVVS1ZRlFiU0txS2ZCSVRHcENXd3Q3MEZ6TXhiZ3Z1MmpfdU9ST0FyRVo4SGhUcndvSXdQVUFIQ0g4ZFlvOFpYcTFFaUtwakJaeERxLWh3cDdqVlBjdENDcE1LYTl2VmUyUDgxdVNZUHRiejhIME1JVmZFTHpsXzlxQjlhQWZ3YkdZQXRtNjFwaVlFRFh3bjM5dURHZ3BaZw?oc=5) |
| Yahoo Finance | Stock Market News for Sep 18, 2026 | 2026-09-17 21:34 | [Source Link](https://news.google.com/rss/articles/CBMikwFBVV95cUxQZVNXaW95YTdSS2NHOUpLdTVEcW9zajVyd1djZjRsLVg5S1ZLUTZPSEVUYlFSUTJ2R1l3eWthZDNqM19Ib3FiN1ktUkxic0pzbEpZOGlLRnZOZUJrb1BnWVFRSXJWd2dybzYyZmV2dV9ZdDNGYzdzTnNNc1YwVlFrSFNydGJfcmtINF9JWlF4alhOckU?oc=5) |
| bilyonaryo.com | Investors focus on rate path, AI slowdown after Fed hike | 2026-09-17 21:34 | [Source Link](https://news.google.com/rss/articles/CBMinAFBVV95cUxPLXl5ay1oeTRrNXRVeWlndzk1OWR6OE5HYkpQVmpXVmJjT0RoMFhDTkNRWkFlQmNpUGxhelNjMEE5WUwydThmdm1mY240ZVIwbjFVRDN6NXVuZS1MU0I1eG1Zay1Wc0xhQlB4SVg4cUczOGdHeXdjQUxrZ05GS3RTdDVhNU14X0VYeUxFOUpTSzVCU0hGY1RUNUpybGQ?oc=5) |
| thestreet.com | Stock Market Today (Sept. 18, 2026): Nasdaq, S&P 500 edges lower after Fed rate hike lifts stocks | 2026-09-17 21:34 | [Source Link](https://news.google.com/rss/articles/CBMirAFBVV95cUxPODlraHYxZ0NTelp0M3hreGFVQnNOMk82cUI3WVR2ZTR5NVFnWHI5X1NIUEEyaFlLelNRZk9RMFU0RE94RC14bFBCaGxiSDdIbmRPUmtPVC13S3Zjb2pOcmJnMjdSTnZ6NHBvbU4zdEV4RGRwQkhPT1ZHME0yQkFZT0hLb29FZDhLN2hqYzJ0WmtzdkMtZ1UzNzlPbzhmbVFjOE5SV1psZzBHVVhL?oc=5) |

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*Canonical Source: https://www.newsylist.com/trend/2026-09-18/the-s-p-500-and-nasdaq-post-biggest-gains-in-six-weeks*
*Synthesized by Newsylist Open Intelligence Engine under E-E-A-T journalistic standards.*