There's loads of things to worry about if you are a bear such as valuations, China, US yield curve flattening, economic woes in Europe, the recent collapse in freight rates etc. Here is an apt summary of these views from the pro's:
Things to Worry About as a Bear
What The End Of Chevron Deference May Mean For Tax
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Frank Agostino of Agostino & Associates discusses two pending Supreme Court
cases, their potential effects on the Chevron doctrine, and their
implications ...
36 minutes ago