It's important to note that the Spyder Score will not change drastically day to day or even week to week, as the most heavily weighted data points that populate the card are updated only once per month.

Domain Authority [SEOmoz ] - Updated roughly once a month

Unique Domain Backlinks [Majestic SEO] - Updated once a month (anywhere between the 2nd and 15th)

Google Traffic Value [SEMRush] - Updated once a month (typically in the first few days of a new month)

Google Keywords [SEMRush] - Updated once a month (typically in the first few days of a new month)

Facebook Shares - Updated daily

Twitter Shares - Updated daily

Google+ Shares - Updated daily

Domain Age - Updated daily