---
format: "aidr-story-markdown/v1"
id: "1f1b11e450c97eb4976f8c8ef1559e700b35f7cebcb53663846ed92b7e09df42"
canonical_url: "https://aidr.today/1f1b11e4?lang=en"
title: "US Markets Wipe $1 Trillion in Worst Nasdaq Day Since June"
lang: "en"
requested_lang: "en"
available_langs: ["en","vi"]
translation_fallback: null
fallback_fields: []
published_at: "2026-10-23T00:26:38.000Z"
category: "Industry"
topics: ["meta","funding"]
source_urls: ["https://huggingnews.com/us-markets/us-markets-wipe-1-trillion-in-worst-nasdaq-day-since-june-718b5d5b","https://x.com/FirstSquawk/status/2113360249818329323","https://x.com/KevRGordon/status/2113360321041887679","https://x.com/NickTimiraos/status/2113390420923441663","https://x.com/amitisinvesting/status/2113304298092163526","https://x.com/bespokeinvest/status/2113332450210529721","https://x.com/negligible_cap/status/2113344777462985117","https://x.com/OMillionaires/status/2113265057694134759"]
summary: "US markets lost over $1 trillion in value as the Nasdaq Composite fell 2.6% and the S&P 500 dropped 1.24%, marking the worst Nasdaq day since June. The sell-off coincided with a 0.193 percentage point drop in the 10-year Treasury yield to 4.952% and a 6.7% decline in the Philadelphia Semiconductor Index, its largest daily drop since June 23. Investors exited AI positions amid concerns over infrastructure spending, with Meta losing $124 billion in market cap after raising 2026 capex projections to $135 billion or more."
---

# US Markets Wipe $1 Trillion in Worst Nasdaq Day Since June

> [Open the canonical story](<https://aidr.today/1f1b11e4?lang=en>)

**Published:** 2026-10-23T00:26:38.000Z
**Category:** Industry
**Topics:** meta, funding

## Summary

US markets lost over $1 trillion in value as the Nasdaq Composite fell 2\.6% and the S&amp;P 500 dropped 1\.24%, marking the worst Nasdaq day since June\. The sell\-off coincided with a 0\.193 percentage point drop in the 10\-year Treasury yield to 4\.952% and a 6\.7% decline in the Philadelphia Semiconductor Index, its largest daily drop since June 23\. Investors exited AI positions amid concerns over infrastructure spending, with Meta losing $124 billion in market cap after raising 2026 capex projections to $135 billion or more\.

## Sources

- [Story source](<https://huggingnews.com/us-markets/us-markets-wipe-1-trillion-in-worst-nasdaq-day-since-june-718b5d5b>)
- [Story source](<https://x.com/FirstSquawk/status/2113360249818329323>)
- [Supporting source](<https://x.com/KevRGordon/status/2113360321041887679>)
- [Story source](<https://x.com/NickTimiraos/status/2113390420923441663>)
- [Supporting source](<https://x.com/amitisinvesting/status/2113304298092163526>)
- [Supporting source](<https://x.com/bespokeinvest/status/2113332450210529721>)
- [Supporting source](<https://x.com/negligible_cap/status/2113344777462985117>)
- [Supporting source](<https://x.com/OMillionaires/status/2113265057694134759>)