Domain Authority dropping for me and rival companies

[Bondara]

Hey,

I have noticed in the past week/2 weeks that my websites domain authority has dropped by 2 points but what is weird is all the other website which are our main competitors in our industry have also dropped by 2.

I was wondering if anyone knows of any changes that have been made to the way the domain authority is calculated or is it just a coincident that we all dropped at one time?

[TimHolmes]

Hi Bondara, this is a common occurrence and is simply representative of the size of the index that Moz is working off, you will find that it happens quite often as the data is refreshed and nothing is likely wrong at all and will probably be affecting more sectors and people than just yourself.

There is nothing to worry about in this instance unless you find your own stats doing something vastly different.

[DonnaDuncan]

Think of domain authority like you would the stock or bond market. They fluctuate over time. Sometimes an individual stock or bond's value will go up or down as a result of that specific stock's assessed risk / benefit. Sometimes the whole market will shift based on factors that have broader influence. Stock and bond valuations fluctuate real time. Website valuations (as measured / quantified by Moz) fluctuate roughly monthly. You've observed what equates to a "market shift" likely resulting from the size and characterization of the websites in Moz's sample.

Stock and bond valuations fluctuate real time. Website valuations (as measured / quantified by Moz) are derived from a large and lengthy process that involves going out and collecting, analyzing, and interpreting data from millions of websites, billions of URLs, and trillions of links. The numbers that spit out at the end vary based on a whole bunch of factors, not least of which is the size and nature of the targets of evaluation.

You've observed what roughly equates to a "market shift". It's likely not a coincidence and due to the sampling process.