Why EchoStar Stock Plummeted by Over 16% Today

It's almost never encouraging for an investor to learn of a federal government investigation into one of their companies. That was the news driving down telecom services provider EchoStar (SATS -16.70%) on Monday; the market shunned the stock, to the point where it closed the day more than 16% down in price. The S&P 500 (^GSPC 3.26%), meanwhile, had a banner day with a nearly 3.3% gain.Static on the lineEchoStar is the company that operates both the Boost Mobile budget telecom brand, and the Dish Network sa ...