title: Python Pandas: How to set the name of multiindex?
body: <p><a href="https://i.stack.imgur.com/FxR4F.png" rel="noreferrer"><img src="https://i.stack.imgur.com/FxR4F.png" alt="enter image description here"></a></p>
  
  <p>I want to add the name of index of multi-index dataframe.</p>
  
  <p>I want to set the name of red box in image as 'Ticker' </p>
  
  <p>How can I do that?</p>