Whisper and take stock (6)
I believe the answer is:
rustle
I believe this is a double definition.
'whisper' is the first definition.
(I know that whisper can be written as rustle)
'take stock' is the second definition.
(rustle can mean to steal cattle or stock)
'and' acts as a link.
(Other definitions for rustle that I've seen before include "Result (anag.)" , "Steal ((eg, cattle)" , "Whisper softly" , "Make sound as of paper crumpling - or steal cattle" , "Low sound of rubbing" .)