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Momentum a Powerful Ally for Stocks as Whiplash Rally Rolls On

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(Bloomberg) -- There are many reasons to doubt the rebound in US stocks, but it has at least one powerful factor on its side: momentum.

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History shows that the rally may extend further than investors might expect and bode well for stock performance down the road. Though it’s not infallible, that trend is good news for traders betting that stocks might have more room to run following a dismal start to the year.

The bounce in the S&P 500 Index has already been one for the record books. The benchmark index notched its ninth-straight daily gain on Friday, the longest stretch since 2004. Such streaks have tended to precede further upside: The S&P 500 was a median 20% higher a year after moves of similar magnitude while notching gains in shorter-term periods along the way, according to WisdomTree’s Jeff Weniger, who analyzed data going back to the late 1980s.

“Your gut says ‘Maybe this is too much, maybe take some chips off the table,’” said Weniger, the firm’s head of equities. “But in actuality, this often times tends to beget more in the way of the rally.”

Analysts have pointed to a variety of factors driving the gains. Markets have cheered signs that the US is seeking to eventually ease tariffs on China and reach trade deals with other countries. Stronger-than-expected jobs data on Friday also buoyed optimism, along with solid earnings from a quartet of Big Tech companies last week.

Market observers also say that fund managers are fearful of missing out on more upside and some are now raising their exposure to equities, further stoking the upward momentum. The S&P 500 is just 8% away from its Feb. 19 record high, rebounding from a loss of nearly 20% last month.

Technical analysts have also noted that the benchmark is back above its 50-day moving average, a closely-watched indicator of short-term support, for the first time since the week it hit its last record.

Another important factor is the reawakening of the so-called Magnificent Seven technology giants, whose shares are key drivers of the S&P 500 due to their heavy weightings in the index. Earnings for Meta Platforms Inc. and Microsoft Corp. were stronger than expected last week, allowing investors to shrug off less favorable results from Apple Inc. and Amazon.com Inc. A Bloomberg index of Magnificent Seven stocks has surged 19% since the April 8th bottom.