Sarah J. Maas Just Broke the UK Fantasy Sales Record. 188,914 Copies.

One hundred and eighty-eight thousand, nine hundred and fourteen copies. In the United Kingdom alone. Between a Tuesday launch and the following Saturday. REBELS, I was expecting Sarah J. Maas to sell books. I was not expecting to finish the evening writing about a new record in the history of British fantasy publishing.

On 3 November, NielsenIQ BookData figures published by The Guardian confirmed that A Court of Splintered Harmony had become the UK’s fastest-selling adult fantasy novel since reliable records began in 1998. It displaced Onyx Storm by Rebecca Yarros, which sold 155,141 copies in its opening week in 2025. ACOTAR’s new opening figure is 33,773 copies higher.

For the sixth volume of a fantasy romance series that began in 2015, this is extraordinary. It is also a rather magnificent answer to anyone who still insists that female-driven fantasy romance is a tiny corner of publishing. The corner appears to have annexed the entire bookshop.

It is a fantasy record. It is also a mainstream publishing event.

The distinction matters. These numbers establish a record for adult fantasy, not every fantasy book ever sold. The Harry Potter novels still occupy their own historic territory in the wider fantasy market. Even with that distinction, Maas has achieved something startling: the biggest UK opening for an adult fantasy novel across the full NielsenIQ record period.

The sixth ACOTAR book also entered the UK’s overall book chart at No. 1. Bloomsbury says its opening was the largest single week for an adult fiction title since Harper Lee’s Go Set a Watchman in 2015. The Guardian additionally reported that it was the fastest-selling hardback novel since Dan Brown’s Inferno in 2013.

Think about that company for a moment. Harper Lee. Dan Brown. Rebecca Yarros. Now Sarah J. Maas. A genre that has been treated with an astonishing amount of condescension has walked into the traditional sales charts and rearranged the furniture.

America has another number-one story

Across the Atlantic, the chart story is expanding beyond physical copies. The Associated Press’s US Apple Books lists for 3 November place A Court of Splintered Harmony at No. 1 in both the paid books ranking and the paid audiobook ranking. A separate Associated Press list places it at No. 1 in Audible’s fiction bestseller chart for the week ending 30 October.

Those are rankings, rather than certified unit-sales totals, and they are platform-specific. Still, two different audio and digital chart signals arriving alongside the UK bookseller figures reinforce the point: the release is being consumed in more than one format. Physical collectors, ebook readers, and audiobook listeners are all part of the moment.

What happened across the rest of the world?

There is an intriguing snapshot from international ebook charts as well. BookTrendSpy, an independent ranking tracker, examined the Apple Books charts in the 35 countries it monitors. According to its 2 November analysis, the English-language ebook reached No. 1 in 27 of those 35 markets within three days of release, and the top 100 in 34.

The geography tells a better story than one enormous number. According to that tracker, the English edition topped several Nordic markets before release day, while Spanish-language editions later reached No. 1 in Spain, Mexico, Argentina, Chile, Colombia, and Peru. These figures come from the tracker’s observed platform rankings. They are a sample of specific markets, rather than a complete accounting of worldwide sales.

For anyone who has watched our ACOTAR investigations move from the United States to Brazil, Italy, Central Europe, and beyond, this is exactly why translating coverage matters. The fandom shares a universe. The readers discover, purchase, and discuss it in dozens of languages. One English-language launch figure can never tell that whole story.

A small but important explanation about the 1.7 million figure

Last week we reported Bloomsbury’s headline-grabbing figure of approximately 1.7 million copies. That number counts English-language print and ebook preorders together with opening-day sales across the US, Canada, the UK, and Australia. The publisher’s figure excludes audiobook editions and translations. Publishers Lunch confirmed those boundaries on 30 October.

Today’s UK record is a different measurement, collected for a different territory and sales window. These numbers belong in the same conversation, but they cannot simply be stacked together to create a new worldwide total. What makes the UK number particularly interesting is its independent chart reporting. It offers a second way to observe the scale of the release.

What comes next for ACOTAR?

The spectacular numbers arrive with one unresolved question hanging over the fandom: what did readers actually think of the novel? Sales measure the size of the audience, not the quality of the reading experience. Reviews across different countries have been passionately divided, and the story itself forms the opening movement of a longer cycle.

A Court of Forgotten Melody is scheduled for 12 January 2027 and will carry the next two movements of that story, with a further installment planned. That gives publishers, booksellers, and readers another major ACOTAR moment just over two months from now.

I’ll be reading the new novel myself, and my review will be written from that experience. Tonight I can confidently report something else: whatever anyone thinks of the book’s pacing, romances, or characters, the scale of its first week has rewritten a chapter of adult fantasy publishing history.

Now I want to hear from you, Rebels. Has the enormous success made you more curious about A Court of Splintered Harmony? Have you already read it? Did this record surprise you? I have a feeling our comments section will have opinions.

Lupe Farkas · Imperfect Rebel