KEY POINTS
  • Investors mistakenly bought shares of Auris Medical instead of Auris Health after a takeover announcement from Johnson & Johnson.
  • Auris Medical stock surged as much as 30 percent Wednesday morning.
  • Auris Health is a privately held company and doesn't have shares available for secondary trading.
Traders work on the floor of the New York Stock Exchange.

Drug developer Auris Medical surged as much as 30 percent on Wednesday after a takeover announcement from Johnson & Johnson came out in the morning.

But Auris Medical isn't the company being bought by J&J. Auris Health is.