Has anyone else seen a large drop in Domain Authority this week?

[SEO_Jellyfish]

A site of ours and its competitors have all seen pretty big drops in domain authority over the past week or so.

Just wondering whether this could be something to do with a change in how DA is measured or whether its our backlink profile that is the problem.

Any feedback would be much appreciated!

[TheZenAgency]

Hi

Rand posted a detailed explanation of this previously. It can be found here 

Hope it helps

[MattRoney]

It's also worth noting that our last index update was on 11/12, so Domain Authority hasn't changed since then.