# Zero-Day Option Traders Are Betting Against Big S&P 500 Swings

> **Newsylist Open Intelligence Dossier** · First detected: 2026-10-26 23:29 UTC · Category: Business · Sources: 4 · Current Velocity: 2

## Key People, Organizations & Locations
Betting, Traders, Against, BIG, Swings, Are, Option, Zero-Day

## Multi-Source Evidence Table
| Source Outlet | Headline | Published (UTC) | Verification URL |
|---|---|---|---|
| The Dark Side Of The Boom | The Tail Is Wagging the Dog: Zero-Day Traders Are Taking Control of the S&P 500 | 2026-10-25 14:00 | [Source Link](https://news.google.com/rss/articles/CBMiggFBVV95cUxPU1F3SlpDTHc0bFRXbXpPZHhyZHR3bzRGQWl4X21xVk1COWVfdWZTdXlhN2FoYVhhYWxNY3ZLUHoySE5EYVZRSkVSZVBzREFrdFZDd2xDX3lfVGU0aW1XcTc5UHc2YTBfM2lteEM4eUQ0b1dMUkZUaTVqeGlpZ3o5ODdn?oc=5) |
| Simply Wall Street | Cboe Stock And Other Market Infrastructure Plays In The 0DTE Options Boom | 2026-10-25 14:00 | [Source Link](https://news.google.com/rss/articles/CBMi6gFBVV95cUxOLVFuZm5SWTdKRjRNQl93dlB2d01tY2otVVpNY3RvRmdZTl9CSlkySHRfOHB5XzFYemQ4UXUtc19QdlB1MkotcnU2b19WelItWW5WeFVzTENnQ24xWGZJdEdpM1ZFOFhRa3NYelVnei1GT0p3bXlLMWN6OVZHc3h3ZUpEMW9Sd0ZzeGtRbmZTYUs1STJhUGgxM0w3ZmlrT3M2Ty1kZWNJMzNkSzBNY3dQNTZxM21qSGRLelkyTjlBWGoyODF3V3dUbExvR2pQZHJaY0FFYTI3aHhzRzRRTnByX0VhNEJOQXphV0HSAe8BQVVfeXFMUE5KN0JqZDBpdEJjcF9ZTWowUVBta3FBbS1ndGJiQ0JvaW9KMkc5T2ZfZGM0VWs4Y0JKMUFVdlN6c3FMNTlzczRlLVA5SXlGXzUxR0c1a04tMHBxdHJJOGpubV9oYkJqdGR) |
| MarketWatch | Options traders are seizing control of the S&P 500 | 2026-10-25 14:00 | [Source Link](https://news.google.com/rss/articles/CBMimAFBVV95cUxNNE1NQ1NwTHhjQzVaR296U2szb2xmQ2ZGdnNQRld5Q1VRU251Rk1wVElvVTg2eTZtcW1jMzZUVi1Rbk5jU2p5TG5rTF9aT1BhbVZSeEl2WlRyQ2ZPWVdlaGpfUU5HcjRWeUllS3BxSEJGa3JJUTZqZzBGWVhFeWNlenlUR0UzT3RlQzZHRHNRQk90Um5VZjB4WQ?oc=5) |
| Bloomberg.com | Zero-Day Option Traders Are Betting Against Big S&P 500 Swings | 2026-10-25 14:00 | [Source Link](https://news.google.com/rss/articles/CBMiswFBVV95cUxNaW9NZFpvd292NzhoTHBaRFZOZEZvR3lsSWhCMmtUS3F1OTJUelZsbzkyX1llbFNLdk5SVlNzM09RRXMxMzd6dVlTTUhLcFZ0Z0UxZ3NlNlpreW41d1c2ckh1SWdSQlcyR1hueVhtejBTaHNlMFdjdFNMQ2NNaENMOU1iOVpya0JQZUpqVHJQVUlycjVIaFRjQ0ZoeThiUHpKem0tZThCSUpXV0NJYjdGMGVIbw?oc=5) |

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*Canonical Source: https://www.newsylist.com/trend/2026-10-26/zero-day-option-traders-are-betting-against-big-s-p-500-swings*
*Synthesized by Newsylist Open Intelligence Engine under E-E-A-T journalistic standards.*