These are the ten most common Y-DNA lineages among Ashkenazi Jews, and their % frequency:
http://www.historycy.org/index.php?showtopic=208869
R1a-Z93-Y2619 = ca. 8,6%
J2a-M92-L556 = ca. 7.6%
G2b-M377-Y12975 = ca. 7,6%
Q1b-L245-Y2200 = ca. 6,4%
E1b-L791-Y6923 = ca. 5,6%
J1-ZS227-Y5400 = ca. 5,0%
J2a-L210-Y15223 = ca. 4,0%
E1b-M84-Y14891 = ca. 4,0%
J1-L817-L816 = ca. 3,3%
R1b-U106-Y5051 = ca. 2,9%
Total for 10 main lineages = ca. 55% of the Ashkenazi Jewish male population:
