B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
80%
80% -- us trade book market concentration for Big Five US trade publishers (2026)
Five major publishers (Penguin Random House, HarperCollins, Hachette, Macmillan, and Simon & Schuster) control roughly 80% of the US trade book market.
- Stated as roughly 80%
Attribution:
View source
Lighthouse Research Team
Last verified:
·
How we verify data →
Source verified
Evidence graded
Value
80%
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
50
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
writersofthewest.net
Primary
Tier C
https://writersofthewest.net/blog/self-publishing-vs-traditional-publishing-the-bitter-reality/ ↗
Source Article
Self-Publishing vs Traditional Publishing in 2026: Pros, Cons, and Which Is Right for You
A guy came to us a while back with a horror manuscript. Good one, the kind where you finish a chapter and go make tea because you need thirty seconds before the next one. Our team reached out to a few agents on…
Original Research
writersofthewest.net
· Original study ↗
Methodology
Blog-cited market concentration figure
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Big Five US trade publishers: 80% us trade book market concentration. Source: writersofthewest.net (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/big-five-us-trade-market-share
HTML Embed
<blockquote cite="https://lighthousedata.io/data/big-five-us-trade-market-share" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>80%</strong> -- us trade book market concentration for Big Five US trade publishers<br><small>Source: writersofthewest.net (2026) · <a href="https://lighthousedata.io/data/big-five-us-trade-market-share" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
Share
Use this data in your work
Copy the citation, embed the widget, or explore thousands more verified marketing statistics -- all free.