Wager Ed, stocking fish, is sold out (8)
I believe the answer is:
betrayed
'is sold out' is the definition.
(to betray someone is to sell them out)
'wager ed stocking fish' is the wordplay.
'wager' becomes 'bet' (synonyms).
'stocking' indicates putting letters inside ('stock' can mean 'carry' or 'contain').
'fish' becomes 'ray' (ray is a kind of fish).
'bet'+'ed'='beted'
'beted' enclosing 'ray' is 'BETRAYED'.
(Other definitions for betrayed that I've seen before include "sold down the river" , "Sold to the enemy" , "given away" , "Unintentionally showed" , "Double-crossed, was disloyal" .)