Facebook, heading for its worst trading day, loses more than $122 billion in value

Facebook on Wednesday released disappointing user growth and lower expectations for the company ahead. The news sent its stock plummeting in after-market trading and into Thursday, July 26.
In midday trading Thursday, the company’s market value (the number of outstanding shares multiplied by the value of a single stock), fell by more than $122 billion.
That means that in one day, just the decline in Facebook’s market value is roughly the entire market value of McDonald’s or Nik