Systemic risk is the danger that coordinated behavior across a financial system turns local decisions into widespread instability. Millions of investors buying or shorting the same security could trigger a flash crash or deepen market disruption. section 10.15
When a crowd moves the market
Social media can help investors debate news, but it can also create feeding frenzies: emotionally driven price swings that produce unjustifiable gains or losses for people caught in the fallout. section 10.15


