August, one of the worst trading months for stocks, could end on a high note next week, now that investors have greater confidence a September rate cut is on the table. In fact, if Nvidia 's earnings results and the Federal Reserve 's preferred inflation gauge next week confirm the latest rally, that could be supportive of a broad-based advance going forward. Just about everything rallied on Friday, after Fed Chair Jerome Powell delivered what was likely his final speech at Jackson Hole, Wyo., one that gave investors exactly what they wanted after suggesting the central bank was ready to lower interest rates at its next meeting. "Powell delivered a final Jackson Hole speech to be remembered," said Sam Stovall, chief investment strategist at CFRA Research. "He essentially gave investors wha

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