Most brawny supplier in business grabs last of range (9)

I believe the answer is:

stockiest

'most brawny' is the definition.

'supplier in business grabs last of range' is the wordplay.
'supplier in business' becomes 'stockist' (supplier of stock to a business).
'grabs' means one lot of letters goes inside another.
'last of' suggests the final letters.
The last letter of 'range' is 'e'.
'stockist' enclosing 'e' is 'STOCKIEST'.

I've seen this clue in The Guardian.

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