[KongchangAI]
Unverified50% confidenceFactExact time

有效市场假说由尤金·法玛于1970年系统提出,分为弱式、半强式和强式三个层次

1
Sources
50%
Confidence
Long-term
Relevance
7/21/2026
First Seen

Sources

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https://kongchang.com/claim/579836
API
curl https://kongchang.com/api/v1/knowledge/claims/579836
MCP
get_claim(id=579836)