https://www.disnat.com/en/learning/trading-basics/stock-basics/what-causes-stock-prices-to-change
A decrease in stock price doesn't mean anything except for the fact that the supply/demand has shifted. It does not show a company's health but they usually correlate. People based their decisions off news about the company. In this case the news was actually that they missed their projected profits.
Also if you think about who owns most of the sear stock you'd know who controls the supply and demand for the vast majority of the stock. Hint: it's probably Eddie and Bruce.
This is whirlpool's side of the exact same story.
https://www.disnat.com/en/learning/trading-basics/stock-basics/what-causes-stock-prices-to-change
In short, whirlpool claimed they discussed cutting ties with sears back in may. They also claim sears sales make up 3 percent of their global market business. Also, it seems the stock decreasing was caused by a report claiming they missed their projected sales by some margin and not because of sears. They claim that was due mostly to an increased cost of raw goods.
I'm not saying either is right or wrong but you guys should probably know there's two sides to this story....