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| type | source_type | title | author | url | date | domain | format | status | proposed_by | contribution_type | tags | processed_by | processed_date | enrichments_applied | extraction_model | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| source | x-tweet | @robinhanson — shared via Telegram by @m3taversal | @robinhanson | https://x.com/robinhanson/status/2037680495321055257?s=46 | 2026-03-28 | internet-finance | social-media | enrichment | @m3taversal | source-submission |
|
rio | 2026-03-28 |
|
anthropic/claude-sonnet-4.5 |
@robinhanson — Tweet/Thread
Shared by @m3taversal via Telegram. Source URL: https://x.com/robinhanson/status/2037680495321055257?s=46
Content
On average, ~20-40% of stock price change happens before official firm announcements. Thus insider trading in stocks is rampant; yet our stock markets function fine. To consider re prediction market insider trading.
Key Facts
- Robin Hanson estimates 20-40% of stock price changes occur before official firm announcements
- Hanson argues this indicates insider trading is rampant in stock markets
- Despite this level of insider trading, stock markets continue to function effectively