B
Evidence Grade B
Graded
under review
Safe to Cite
Current
4%
4% -- annual sales lost to stockouts for average retailer (2026)
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
4%
Unit
Percentage
Data Vintage
2026
Entity
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Harvard Business Review
Primary
Tier B
https://www.zhsunyco.com/inventory-management-problems/ ↗
Source Article
Inventory Management Problems: Why They Persist and How to Solve Them
Inventory Management Problems: Why They Persist and How to Solve Them
Why Inventory Management Problems Are So Persistent
Inventory management sounds simple on paper: know what you have, know where it is, and reorder before it runs out. In practice, problems in inventory management multiply as busin…
Original Research
Harvard Business Review
· Original study ↗
Methodology
Harvard Business Review retail inventory research, as cited by the article
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
average retailer: 4% annual sales lost to stockouts. Source: Harvard Business Review (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/retailer-stockout-sales-loss
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<blockquote cite="https://lighthousedata.io/data/retailer-stockout-sales-loss" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>4%</strong> -- annual sales lost to stockouts for average retailer<br><small>Source: Harvard Business Review (2026) · <a href="https://lighthousedata.io/data/retailer-stockout-sales-loss" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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