There’s been a bunch of weirdness around people betting on futures contracts in this way. Every once in a while oil goes negative because some of the people who are goofing around and betting realize they actually can’t take delivery of the oil that’s about to come due and so they just need to get rid of their contracts.
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Seventy-year-old baby boomer Martha Shedden spent more than three decades building a successful career as a civil engineer. But 15 years ago, in 2011, she found a new set of numbers to obsess over: the fiercely complicated rules of the U.S. Social Security system. Today she serves as the president and cofounder of the National Association of Registered Social Security Analysts (NARSSA), the largest Social Security advisory services firm in the U.S., and she’s grappling with a problem: President Donald Trump’s handling of the nation’s finances.，更多细节参见体育直播