Hachette Book Group (HBG) is a publishing company owned by Hachette Livre, the largest publishing company in France, and the third largest trade and educational publisher in the world. Hachette Livre is a wholly owned subsidiary of Lagardère Group. HBG was formed when Hachette Livre purchased the Time Warner Book Group from Time Warner on March 31, 2006. Its headquarters are located at 1290 Avenue of the Americas, Midtown Manhattan, New York City. Hachette is considered one of the "big five" publishing companies, along with Holtzbrinck/Macmillan, Penguin Random House, HarperCollins, and Simon & Schuster. In one year, HBG publishes approximately 1400+ adult books (including 50–100 digital-only titles), 300 books for young readers, and 450 audiobook titles (including both physical and downloadable-only titles). In 2017, the company had 167 books on the New York Times bestseller list, 34 of which reached No. 1.