Plan continued to own a "significant" share of company equity. At the time of the Advent acquisition, Simmons and Serta together held a 34 percent share of the U.S. mattress market. Simmons and Serta retained separate sales, marketing, research and development, and merchandising departments, and continue to remain separate. In August 2018, Simmons Bedding's parent company Serta Simmons Holdings LLC announced a merger with online retailer Tuft & Needle to increase their online presence. By November 2020, the parent company had established a website to promote its renaming to Serta Simmons Bedding LLC, while still retaining the separate brands it owns (Serta, Simmons, Tuft & Needle and Beautyrest, now spun off from Simmons into a separate brand) and individual websites for them. On January 23, 2023, Serta Simmons Bedding filed for Chapter 11 bankruptcy. References External links Simmons web site Furniture companies of the United States Manufacturing companies based in Atlanta Kenosha, Wisconsin Manufacturing companies established in 1870 1870 establishments in Wisconsin Gulf and Western Industries Mattress retailers of the United States 2006 mergers and acquisitions Companies that filed for Chapter 11 bankruptcy in 2009 Companies that filed for Chapter 11 bankruptcy in 2023 2012 mergers and acquisitions