I have told people in the past that we share a single segment of meaning IBD DNA with the vast majority of our genetic matches (where IBD means Identity-by-Descent, or a valid matching segment of DNA from a recent genealogical relationship). I usually say that we share a single segment of DNA with 99% of our matches, but that’s been an off-the-cuff estimate. I wanted to have better data to cite, so I took a closer look at this issue.
At FTDNA, you can download a list of all of your matches:
I downloaded my list and removed all of my targeted test-takers (anyone that I tested or I asked to test). These close test-takers would skew the data.
After removing them from my match list, I have a total of 2,491 matches at Family Tree DNA.
Family Tree DNA also allows you to download a list of all the segments you share with your matches: