title: 13D
text: # 13D
  
  13D, 13d or XIII-D may refer to:
  
  * Rule 13D, United States Securities and Exchange Commission rule
  * Schedule 13d, United States Securities and Exchange Commission rule
  * Stalag XIII-D, a German Army World War II prisoner-of-war camp in Nürnberg
  * 13D Research, an institutional global research firm
  