UPDATED FEB 21, 22:00 (PST)
This issue has now been resolved.
NEW ISSUE
Yahoo/Bing recently made some changes to their SERP which required us to update some of our detection logic for ranking your keywords. We’ve already deployed a fix, and your rankings are again being collected.
For the next 48 hours or so, you may notice some changes in your ranking trend graphs for Yahoo and Bing. We’re using our local cached HTML SERPs to re-rank the missing days data. All should be back to normal by Monday.
Thank you for your patience, and let us know if you have any questions!
Rob, and the STAT Team.