FILE - In this July 20, 2017, file photo, the Kenmore Elite Smart French Door Refrigerator appears on display at a Sears store in West Jordan, Utah. Private equity firm ESL Investments is offering to... (Associated Press) 
 
 FILE - In this July 20, 2017, file photo, the Kenmore Elite Smart French Door Refrigerator appears on display at a Sears store in West Jordan, Utah. Private equity firm ESL Investments is offering to buy struggling Sear’s Kenmore brand and home improvement unit. (AP Photo/Rick Bowmer, File) (Associated Press) 
 
 NEW YORK (AP) — Sears' biggest shareholder appears to be pushing for a breakup of the 125-year-old company that has survived two world wars and the Great Depression. 
 
 Chairman and CEO Edward Lampert — whose hedge fund has forwarded millions in funding to keep the ailing chain afloat — has asked the struggling retailer to sell its prominent Kenmore appliance brand and its home improvement business, the company said Monday. 
 
 The private equity firm ESL Investments said it might buy the assets if the company is willing to sell. That sent shares of Sears Holding Corp., which have lost more than 70 percent of their value in the past year, up nearly 5 percent. 
 
 Lampert, who combined Sears and Kmart in 2005 after helping bring Kmart out of bankruptcy, has long pledged to turn the company's fortunes around. He said the retailer would find ways to capitalize on its best-known brands like Kenmore appliances and DieHard car batteries, as well as its vast holdings of land. 
 
 But as the company has seen shoppers move on to Target, Walmart and Amazon, and has closed hundreds of stores, cut costs and sold brands to deal with falling sales, Lampert now appears to have reconsidered. 
 
 In his letter to the board, Lampert said Sears has been trying to sell the Kenmore businesses for nearly two years but it has been unable to do so. 
 
 Kenmore could have substantial value. Amazon.com began selling Kenmore appliances on its site almost a year ago. ESL said its non-binding proposal gives the appliance and home improvement business an enterprise value of $500 million. 
 
 ESL said it also would be open to making an offer for Sears' real estate, including the assumption of $1.2 billion in debt. 
 
 "In our view, pursuing these divestures now will demonstrate the value of Sears' portfolio of assets, will provide an important source of liquidity to Sears and could avoid any deterioration in the value of such assets," Lampert wrote. 
 
 Sears, which started in the 1880s as a mail-order catalog business, was a back-to-school and appliance shopping destination for generations. Its storied catalog featured items from bicycles to sewing machines to houses, and the company's stores were a fixture of suburban malls from the 1950s to 1970s. ||||| New York (CNN Business) Sears, the once-dominant retail chain that changed how Americans shopped and lived, has filed for bankruptcy. 
 
 Sears Holdings ( SHLD ), the parent company of Sears and Kmart, is among dozens of prominent retailers to declare bankruptcy in the era of Amazon ( AMZN ). 
 
 The filing in federal bankruptcy court in New York came in the early hours of Monday morning. The company issued a statement saying it intends to stay in business, keeping open stores that are profitable, along with the Sears and Kmart websites. 
 
 As of the filing, about 700 stores remained open and the company employed 68,000 workers. That's down from 1,000 stores with 89,000 employees that it had as recently as February. 
 
 But Sears said that it's looking for a buyer for a large number of its remaining stores, and it will close at least 142 stores near the end of this year. That's in addition to the 46 store closings already planned for next month. The company did not rule out additional store closings as the bankruptcy process proceeds. 
 
 Eddie Lampert, the company's chairman and largest shareholder, gave up the title of CEO. The company will now be run by three of the company's top executives. 
 
 For years, Lampert has claimed the company was making progress to end its years of ongoing losses. 
 
 "While we have made progress, the plan has yet to deliver the results we have desired," Lampert said in a statement Monday. He said the bankruptcy process would allow the company to shed debt and costs and "become a profitable and more competitive retailer." 
 
 Although retailers typically file for bankruptcy with the intention of staying in business, many end up going bust after filing. In recent years, Toys "R" Us RadioShack and Sports Authority have followed that path to the graveyard. 
 
 The upcoming holiday season will be a particular challenge for Sears. It will need to do better than last year. While other traditional retailers enjoyed strong holiday sales, Sears and Kmart both reported sharp drops. 
 
 Sears' problems go back decades 
 
 Sears fell out of shoppers' favor over the past decades as online stores and big box rivals, including Walmart ( WMT ) and Home Depot ( HD ), beat Sears on price and convenience. 
 
 Sears store in Jackson, Mississippi, 1949. 
 
 But many of Sears' problems were self-inflicted. Its management tried to compete by closing stores and cutting costs. It slashed spending on advertising and it failed to invest in the upkeep and modernization of its outlets. Sears and Kmart stores grew barren and rundown. 
 
 , and the company's cash reserves disappeared. Sears sold many of its most valuable assets, including its massive real estate footprint, to raise the cash it needed to survive. According to the bankruptcy filing, the company was losing about $125,000 a month. Sales declined. Losses piled up in the billions of dollars. Debt mounted , and the company's cash reserves disappeared. Sears sold many of its most valuable assets, including its massive real estate footprint, to raise the cash it needed to survive. According to the bankruptcy filing, the company was losing about $125,000 a month. 
 
 It ditched Lands End in 2014. Three years later, Sears dumped the Craftsman brand , which it had sold exclusively. The company has been looking for a buyer for its Kenmore brand of appliances for years. The only acquirer it could find was Lampert, who offered $400 million for Kenmore through his hedge fund. The Sears board never accepted the offer. 
 
 By last month, Sears' market value had fallen below $100 million, less than quarter of the value of Kenmore itself. 
 
 The retailer's problems have mounted in recent years. Sears warned investors last year there was " substantial doubt " it would be able to stay in business. It has lost $11.7 billion since 2010, its last profitable year. Sales have plunged 60% since then. The company shuttered more than 2,800 stores over the past 13 years. 
 
 With the writing on the wall that a bankruptcy was imminent, suppliers demanded Sears pay cash up front for the items in its stores, putting it at an even greater competitive disadvantage with other retailers. 
 
 Whirlpool , ( WHR ) which had started in business more than a century ago selling its appliances at Sears, pulled its various brands out of Sears and Kmart stores last year. Once the dominant appliance retailer in the country, Sears accounted for only 3% of Whirlpool's sales worldwide in 2017. 
 
 In September, Lampert proposed that Sears restructure its finances without filing bankruptcy. But he warned that the company was running out of cash . The company's stock quickly fell below $1 a share for the first time in its history. 
 
 Creditors opted instead to try their hand in bankruptcy court. Without a deal and with $134 million in debt payments due Monday, Sears filed for Chapter 11 bankruptcy protection. 
 
 The brand that shaped a nation 
 
 Sears was once the nation's largest retailer and its largest employer. In its heyday, it was both the Walmart and Amazon of its time. 
 
 Beauty department of a sears store, 1955. 
 
 Formed in 1886 by railroad station agent Richard Sears, the company started as a watch business in North Redwood, Minnesota. Sears moved to Chicago in 1887, and he hired watchmaker Alvah Roebuck as his partner. The first Sears Roebuck catalog, which sold watches and jewelry, was printed in 1896. 
 
 The Sears catalog was the way many Americans first started to buy mass-produced goods. That was an enormous shift for people who lived on farms and in small towns and made many of the goods they needed on their own, including clothes and furniture. 
 
 Sears' stores helped reshape America, drawing shoppers away from the traditional Main Street merchants. Sears brought people into malls, contributing to the suburbanization of America in the post-World War II era. Its Kenmore appliances introduced many American homes to labor-saving devices that changed family dynamics. Its Craftsman tools and their lifetime guarantees were a mainstay of middle-class America. 
 
 But long before the rise of Amazon and online shopping, Sears was struggling to keep up with Americans' changing shopping habits. Big box retailers such as Walmart beat it on both price and merchandise selection. 
 
 In 1999, it was booted out of the Dow Jones Industrial Average, where it had been for 75 years. Big box rival Home Depot took its place. 
 
 Sears and Kmart merged to form Sears Holdings in 2005. At the time, they had 3,500 US stores between them. They have fewer than 900 today. 
 
 In July, Sears closed its last store in Chicago, once its hometown. In August, the company announced another 46 store closings. The company had 89,000 employees as of February. That's down from 317,000 US employees in early 2006, soon after the merger.
– Sears' biggest shareholder appears to be pushing for a breakup of the 125-year-old company that has survived two world wars and the Great Depression. Chairman and CEO Edward Lampert—whose hedge fund has forwarded millions in funding to keep the ailing chain afloat—has asked the struggling retailer to sell its prominent Kenmore appliance brand and its home improvement business, the company said Monday. His private equity firm, ESL Investments, said it might buy the assets if the company is willing to sell. That sent shares of Sears Holding Corp., which have lost more than 70% of their value in the past year, up nearly 5%. Lampert, who combined Sears and Kmart in 2005 after helping bring Kmart out of bankruptcy, has long pledged to turn the company's fortunes around, per the AP. He said the retailer would find ways to capitalize on its best-known brands like Kenmore appliances and DieHard car batteries, as well as its vast holdings of land. But as the company has seen shoppers move on to Target, Walmart, and Amazon, and has closed hundreds of stores, cut costs, and sold brands to deal with falling sales, Lampert now appears to have reconsidered. In his letter to the board, Lampert said Sears has been trying to sell the Kenmore businesses for nearly two years but has been unable to do so. "In our view, pursuing these divestures now will demonstrate the value of Sears' portfolio of assets, will provide an important source of liquidity to Sears and could avoid any deterioration in the value of such assets," he wrote. (Business Insider has the full letter.)