When the public learns about a company's practices on social media, its stock price drops significantly.
Mechanism
Synthesis from 3 studies
When lots of people post angry things about a company online, computer trading systems see it as a warning sign and start selling the company’s stock. This mass selling causes the stock price to fall quickly.
Most probable mechanism
When people post angry or negative messages about a company online, financial traders see this as a signal of growing public backlash, which makes them sell shares quickly, causing the stock price to drop.
Negative social media content about a company's practices is detected and aggregated by algorithmic trading systems.
Algorithmic systems interpret this aggregated negativity as an indicator of impending reputational or regulatory risk.
Traders respond by rapidly selling shares to avoid potential losses, increasing downward pressure on the stock price.
Evidence from Studies
Supporting (3)
Community contributions welcome
Delay, deny, and defend: Public outrage at health insurance companies and stock market debacle
Impact of excessive environmental information disclosure on stock price crash risk
The Impact of Social Media Sentiment on Stock Price Changes
Contradicting (0)
Community contributions welcome
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.