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Broadcast and traditional media · subsidiary of Holtzbrinck Publishing Group (Georg von Holtzbrinck GmbH & Co. KG) · United States

Macmillan Publishers

us.macmillan.com ↗

Big Five US book publisher owned by German media group Holtzbrinck.

Hard to displace
Assessed 24 July 2026 · Evidence as of 24 July 2026
Strong structural protection; the business model survives ai pressure.
On the recordSince 24 July 2026 · Checkable from H2 2026 to early 2027 · Every call on the record Checkpoint: Ruling in Macmillan v. Meta copyright suit (SDNY Case 1:26-cv-03689)
The call

Macmillan sits well behind Penguin Random House in bestseller share while its lawsuit against Meta tests whether publishers get paid when AI trains on their books.

Macmillan publishes books and owns about 10% of US bestsellers through exclusive deals with authors and control of how books reach readers through stores and libraries. It is hard to replace because famous authors stick with them, copyright law protects their books, and they have long-standing relationships with bookstores and libraries, though bigger rival Penguin Random House has nearly four times their market share and Amazon can publish books directly to readers online. The biggest threat is whether courts will force Macmillan to license their books cheaply to AI companies like Meta and OpenAI, which could reduce what publishers earn and undercut their business model over the next five to ten years.

Why
01
AI pressure: Generative AI models trained on books (Meta Llama, OpenAI, xAI). AI firms trained on Macmillan's books without paying; a May 2026 suit against Meta aims to force licensing fees instead of free scraping. Could AI do the core job? Only partly.
02
Bigger players: Penguin Random House and Amazon. PRH takes 38% of hardcover bestseller slots to Macmillan's 10%, and Amazon's self-publishing tools compete for authors outside the traditional model. Could a giant copy it? Probably.
03
What protects it. Exclusive author contracts, copyright law, and entrenched bookstore and library distribution that AI models and self-publishing platforms cannot replicate.
What would change this call
Ruling in Macmillan v. Meta (SDNY Case 1:26-cv-03689). Would show whether publishers can force AI firms to pay for copyrighted training data.
Publishers Weekly January 2027 bestseller-share rankings. Would show if Macmillan's 10% share is shrinking further versus PRH and S&S.
Further Macmillan imprint closures or mergers after Roaring Brook's March 2026 dissolution. Would show whether cost-cutting is accelerating into deeper consolidation.
Key numbers
  • Macmillan held 10% of 2025 hardcover bestseller slots (2025)
  • Penguin Random House held 38% of the same slots (2025)
  • Holtzbrinck Group revenue was €1.99B in FY2024 (2024)
Named risks
  • Adverse ruling in AI copyright litigation could void publisher licensing leverage over training data. Severity: high
  • Smallest Big Five publisher by bestseller share, facing indie and Amazon self-publishing erosion. Severity: medium
  • Imprint dissolutions like Roaring Brook (March 2026) signal cost-cutting that could widen to more layoffs. Severity: medium
  • Macmillan Learning courseware exposed to AI tutoring substitution eroding institutional sales. Severity: medium
  • Holtzbrinck's active portfolio reshaping, seen in the 2026 Scientific American sale, could extend to Macmillan itself. Severity: low
Rivals, as read in July 2026
RivalDirectionEvidence
Penguin Random Houselosing toPRH held 38% of 2025 hardcover bestseller slots vs Macmillan's 10%, Jan 2026 ranking
Amazongaining onKindle Direct Publishing and retail control exert decade-scale structural pressure on Big Five margins
Entangled Publishinggaining onIndie publisher Entangled reportedly surpassed HarperCollins' total bestseller positions in 2025
MetacontestingMacmillan sued Meta over Llama training on copyrighted books, SDNY filing May 5, 2026
Simon & SchustercontestingS&S held 13% bestseller share in 2025 vs Macmillan's 10%, now KKR-owned since 2023
Questions people ask
Is Macmillan Publishers profitable?
Macmillan itself does not report standalone profit, but parent Holtzbrinck Group reported group-wide pretax earnings of €293 million on €1.99 billion revenue for FY2024, indicating the overall group, including Macmillan, is profitable as of that fiscal year.
Who owns Macmillan Publishers?
Macmillan Publishers and its UK sibling Pan Macmillan have been wholly owned subsidiaries of the privately held German Holtzbrinck Publishing Group since 1999/2001. Holtzbrinck is chaired by Stefan von Holtzbrinck and also owns 53% of Springer Nature.
Could AI replace Macmillan Publishers?
Unlikely outright, but AI poses licensing and revenue pressure: Macmillan joined a class-action suit against Meta on May 5, 2026 (SDNY case 1:26-cv-03689) over Llama training on its books, while an Anthropic $1.5B settlement approved July 21, 2026 set fair-use-plus-piracy precedent.
Who is Macmillan Publishers' biggest competitor?
Penguin Random House is Macmillan's dominant Big Five rival, holding 38% of 2025 US hardcover bestseller-list slots versus Macmillan's 10%, per Publishers Weekly's January 2026 ranking, and generating roughly €4.9 billion/$5.3 billion in 2024 revenue versus Macmillan's smaller scale.
Is Macmillan Publishers suing Meta over AI?
Yes. On May 5, 2026, Macmillan joined Elsevier, Cengage, Hachette, McGraw Hill and author Scott Turow in filing a class-action copyright suit against Meta in SDNY (case 1:26-cv-03689) over Llama models allegedly trained on their copyrighted books.
How big is Macmillan Publishers compared to the other Big Five publishers?
Macmillan is the smallest of the US Big Five by 2025 hardcover bestseller share, holding 10% of list slots versus Penguin Random House's 38%, Simon & Schuster's 13%, and Hachette's 12%, though it edged out HarperCollins' 9%, per Publishers Weekly, January 2026.
Timeline
  • 2026-07-21Court approves $1.5B Anthropic authors settlement, ruling pirated-copy training not fair use
  • 2026-06Holtzbrinck completes sale of Scientific American magazine to LabX Media Group
  • 2026-05-05Macmillan joins Elsevier, Cengage, Hachette, McGraw Hill in copyright suit against Meta, SDNY
  • 2026-03-31Macmillan Children's dissolves Roaring Brook Press, lays off six, forms new imprint
  • 2026-01-20Publishers Weekly ranks Macmillan at 10% of 2025 hardcover bestseller slots
  • 2023Macmillan named Target's Entertainment Vendor of the Year
  • 2023Pan Macmillan (UK) acquires business publisher Harriman House
  • 2022Jon Yaged becomes CEO of Macmillan US, succeeding Don Weisberg
Revision history
24 July 2026
First assessed. Hard to displace. The text above is fixed as of this date and is not edited afterwards.
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