---
format: "aidr-story-markdown/v1"
id: "d9066c83ffe13be7326e018992f9e069d7b276f24afbaedf2644d31030afb9a4"
canonical_url: "https://aidr.today/d9066c83?lang=en"
title: "China's CSI 300 Completes 12 Week Losing Streak as Losses Reach $3.4T"
lang: "en"
requested_lang: "en"
available_langs: ["en","vi"]
translation_fallback: null
fallback_fields: []
published_at: "2026-10-30T14:07:20.000Z"
category: "Industry"
topics: ["china"]
source_urls: ["https://marketbrief.now/global-markets/chinas-csi-300-completes-12-week-losing-streak-as-losses-reach-34t-0695ad12","https://x.com/business/status/2113140830760243274","https://x.com/BullTheoryio/status/2116095577532567790","https://x.com/business/status/2114579062689571322","https://x.com/EricBalchunas/status/2113244280215028220","https://x.com/HAOHONG_CFA/status/2116086982090846648","https://x.com/niubi/status/2113262970381733929","https://x.com/visegrad24/status/2114750922664341717"]
summary: "China's CSI 300 Index fell for a 12th consecutive week, marking its longest losing streak in history, with total losses since the June peak reaching $3.4 trillion and the index down more than 20% in a bear market. Technology and artificial intelligence shares led the selloff, with the STAR 50 Index sinking 5.48% and listed AI model developers MiniMax and Zhipu down 85% from their highs, while chipmakers SMIC, Cambricon and CXMT fell 49%, 43% and 36% respectively. The declines persisted despite roughly $25 billion in equity purchases by state-backed funds this month and an average of $2.5 billion a day in state ETF buying since July."
---

# China's CSI 300 Completes 12 Week Losing Streak as Losses Reach $3\.4T

> [Open the canonical story](<https://aidr.today/d9066c83?lang=en>)

**Published:** 2026-10-30T14:07:20.000Z
**Category:** Industry
**Topics:** china

## Summary

China's CSI 300 Index fell for a 12th consecutive week, marking its longest losing streak in history, with total losses since the June peak reaching $3\.4 trillion and the index down more than 20% in a bear market\. Technology and artificial intelligence shares led the selloff, with the STAR 50 Index sinking 5\.48% and listed AI model developers MiniMax and Zhipu down 85% from their highs, while chipmakers SMIC, Cambricon and CXMT fell 49%, 43% and 36% respectively\. The declines persisted despite roughly $25 billion in equity purchases by state\-backed funds this month and an average of $2\.5 billion a day in state ETF buying since July\.

## Sources

- [Story source](<https://marketbrief.now/global-markets/chinas-csi-300-completes-12-week-losing-streak-as-losses-reach-34t-0695ad12>)
- [Story source](<https://x.com/business/status/2113140830760243274>)
- [Story source](<https://x.com/BullTheoryio/status/2116095577532567790>)
- [Supporting source](<https://x.com/business/status/2114579062689571322>)
- [Supporting source](<https://x.com/EricBalchunas/status/2113244280215028220>)
- [Supporting source](<https://x.com/HAOHONG_CFA/status/2116086982090846648>)
- [Supporting source](<https://x.com/niubi/status/2113262970381733929>)
- [Supporting source](<https://x.com/visegrad24/status/2114750922664341717>)