Yahoo Finance page has some major issues recently (a month or so). Stock portfolio pages take a long time to load and or say "unable to load"
I'm sorry to hear you're experiencing this issue! We'd like to help, please send us a private tweet at @YahooCare, message us on Facebook at Yahoo Customer Care or in case you do not have a social media account, our support team is available at help.yahoo.com
Looking forward to your reply!