Separate supplier spend from supplier stock share
Invoice spend measures what the venue purchased during a reporting period. Inventory stock share measures what remains on hand. A supplier can lead one measure without leading the other, particularly after a large delivery or before a busy trading period.
Use a consistent category and date window
Compare suppliers within the same venue, category and period. Food and beverage have different demand patterns, so a combined total can hide a useful category-level story. Payment status provides another view of supplier exposure but does not change the invoice’s recorded value.
Investigate concentration before treating it as a problem
A high supplier share may reflect a specialist product range or an agreed sourcing policy. Check invoice details and purchase timing before recommending a switch. Spend concentration alone does not demonstrate poor pricing, service failure or an available alternative supplier.