Usage patterns
〈物〉の手持ちがあるto have X on hand
手持ちの〈物〉the X one currently has on hand
Please show me the materials you have on hand.
手持ちで〈動詞〉to do something in a handheld manner
This scene was filmed handheld.
手持ちがないto have none on hand (be out of stock or cash)
I don't have any on hand right now.