text: Title: Weekly data - last week missing
  Body: Hi all,
  
  The code below, gives me data until the very last day of last week (13th of Jan):
  ```
  yfObj = yf.Ticker(stock)
  data = yfObj.history(period="3y")
  ```
  But, if I want to have weekly data, using the code here below:
  `
  data = yfObj.history(period="3y",interval="1wk")
  `
  It gives me data until 9th of January. So for some reason the last weekly data isn't available. 
  If I look on yahoo manually though (historical data, weekly), I do see the data of 13th of January. 
  
  Any idea if there's a setting or parameter that I could include?