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Options prices are unacceptably stale.. often by 24 hours or more. Example, VXX March 20, 16 strike call option on 1/27/2020 at 9:40 AM continues to show price as of 1/24/2020 at 9:48 AM. This option has trades many times since but that's not reflected in the quoted price. This isn't just about that one option on VXX, the stale prices issue is widespread.
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We would like to further investigate this, please send us some screenshots at finance.support@verizonmedia.com.
Regards,
Yahoo Finance