The federal government closed up shop last week. You might not have known that if the stock market's performance was your guide: The S & P 500 finished the week at a record high on a six-day win streak . But the longer the shutdown in Washington drags on, the more attention Wall Street may start to give it. For now, the market calculus is relatively simple: a temporary shutdown is unlikely to materially alter the trajectory of the U.S. economy and corporate profits, considering that the hundreds of thousands of furloughed government workers will receive back pay once it is over. There is also an implicit bet that President Donald Trump 's threats of mass federal firings won't come to fruition, or, if they do, they'll be subject to drawn-out litigation. Sure, investors wish they were gettin

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