Hi – Thank you for your post. The X to delete recently viewed is still available on the homepage. If you hover over the ticker the X will appear. If you are not seeing it, please try some browser troubleshooting: https://help.yahoo.com/kb/account/SLN2891.html
If the problem continues, please contact us at finance.support@verizonmedia.com so we can gather more details and investigate further.
Thank you!
Yahoo Finance