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- US stocks fell on Thursday, ending the S&P 500's eight day winning streak.
- Treasury yields jumped after poor results of a 30-year bond auction and hawkish comments from Jerome Powell.
- "If it becomes appropriate to tighten policy further, we will not hesitate to do so," Powell said.
US stocks declined on Thursday, effectively ending the S&P 500's eight day win streak that delivered a gain of more than 6%.