In equal shares (6)
I believe the answer is:
evenly
'in equal shares' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for evenly that I've seen before include "without disruption?" , "(Spread) without irregularities" , "On an equal basis" , "In measured manner or fairly" , "Calmly or equitably" .)