Definition
The percentage of recorded answers that name a given company. One answer can name several, so the shares in a category do not add to 100.
In the report
For each company in the answers, the percentage of recorded answers naming it. Shown as a table of you and the rivals discovered for your market. One answer can name several companies, so the column does not add to 100; a leader with 1.5 times the next company's share is a leader, and the report's opening says so.
How to move it
Share moves when you are added to answers you were absent from. It does not move by improving the site alone, since most answers are written from other people's pages.
See share of voice measured on your site
Your website, region and work email. The score appears in about three minutes, and the report is a link you keep.