The stock market's fear gauge spikes 13% after Fed warns of prolonged labor-market damage

· *Cboe's VIX index, investors' preferred gauge of stock market volatility, leaped as much as 12.7% on Thursday following the Federal Reserve's warning of a slow labor-market rebound.*
· *The metric rose above 30 for the first time since late May, suggesting markets could be in for a second bout of sharp price swings.*
·...