Nasdaq Triggers Market-Wide Circuit-Breaker As AMZN "Crashes" 87% After-Hours

Nasdaq has issued a market-wide trading halt amid what appears to be a "glitch" that sent a number of the largest Nasdaq-listed stocks to crash or spike to exactly $123.47 per share.
This move crashed the value of companies including Amazon and Apple, sparked chaos in Microsoft, while sending Zynga rocketing up more than 3000%.