Market Extra: Why an Elon Musk tweet led to a 5,675% surge in Signal Advance’s stock

Tesla CEO Elon Musk recommended folks use Signal, an encrypted-messaging platform which isn’t a publicly traded company. Instead unrelated Signal Advance has surged 5,643%, pushing its market value to $3.164 billion from a mundane $55 million as of last Wednesday.

Tesla CEO Elon Musk recommended folks use Signal, an encrypted-messaging platform which isn’t a publicly traded company. Instead unrelated Signal Advance has surged 5,643%, pushing its market value to $3.164 billion from a mundane $55 million as of last Wednesday.