Read more at https://on.ft.com/2LG9DV7<br /><br />The FT's west coast editor Richard Waters says big US tech companies look strong, but that their share prices will likely be volatile<br /><br />Subscribe to FT.com here: http://bit.ly/2GakujT<br /><br />Subscribe to the Financial Times on YouTube: http://bit.ly/FTimeSubs<br /><br />For more video content from the Financial Times, visit http://www.FT.com/video<br /><br />Twitter https://twitter.com/ftvideo<br />Facebook https://www.facebook.com/financialtimes
