九月不是美股投資好節氣，但多頭年份，可能會不同

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https://finance.yahoo.com/news/w ... zing-222541290.html

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September has been the worst month of the year for the S&P 500, with the benchmark index falling an average of 0.56% since 1945, according to Sam Stovall, chief investment strategist at CFRA. The S&P has advanced only 45% of the time in September, the lowest rate of any month, CFRA’s data showed.

This time around, stocks have momentum on their side. The S&P 500 notched its 52nd record closing high of the year on Friday and has gained 20% so far in 2021, having gone 287 calendar days without a pullback of 5% or more.

That type of performance has signaled comparatively strong returns in the past. The index has gone on to deliver a median gain of 5.2% for the rest of the year during years when it made 30 or more new highs through August, according to data from LPL Financial. That compares with a median gain of 3.6% for all years, the firm's data showed.

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Investors have also been cutting back on leverage, with margin debt dropping 4.3% to $844 billion in July even as the S&P advanced more than 2%, according to data from BofA Global Research. The S&P 500 has been lower 71% of the time one year after a peak in margin debt has been reached, the bank’s analysis showed.

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Some investors remain ready to jump on any downswings brought on by higher volatility in the coming weeks. "If we do see a pullback in September, I would definitely be telling our clients, 'take this as a buying opportunity,'" said Janasiewicz.