All these eight candidates are male and from engineering background. Six of them are from the IITs, said CAT 2013 convenor Prof Rohit Kapoor.
There are 10 candidates also who have scored 99.9 percentile, and one of them is a female, he said.
CAT 2013 was conducted in 76 secure test centres across 40 cities over a 20-day testing window from October 16 to November 11, 2013.
In all, 1.94 lakh candidates had registered for the exam and 1.74 lakh took the test.
Candidates have been advised to retain a printed copy of their score card.