title: Has Yahoo suddenly today terminated its finance download API?
body: <p>For months I've been using a url like this, from perl:</p>
  
  <pre><code>http://finance.yahoo.com/d/quotes.csv?s=$s&amp;f=ynl1 #returns yield, name, price;
  </code></pre>
  
  <p>Today, 11/1/17, it suddenly returns a 999 error.</p>
  
  <p>Is this a glitch, or has Yahoo terminated the service?</p>
  
  <p>I get the error even if I enter the URL directly into a browser as, eg:</p>
  
  <pre><code>http://finance.yahoo.com/d/quotes.csv?s=INTC&amp;f=ynl1
  </code></pre>
  
  <p>so it doesn't seem to be a 'crumb' problem.</p>
  
  <p>Note: This is NOT a question which has been answered in the past!
  It was working yesterday.That it happened on the first of the month is suspicious. </p>