In the Markets Now: Concentration and Bubbles
Taking Stock of the Current Market
One of the most common themes I hear when talking to clients and advisors is worries about the concentration of the stock market. At the beginning of this year, the top 5 stocks in the S&P 500 accounted for over 25% of the market cap of the entire index, marking the highest level of “top-heaviness” in at least 35 years (dot-com bubble included). This raises questions both about the overall health of the market – despite being at all-time highs – and about whether a bubble is forming in the mega-cap Tech stocks accounting for the index’s concentration. Let’s briefly dig into both questions.
It is true that mega-cap Tech has been market leadership and a dramatic outperformer of late (the cherry on top coming via Nvidia’s blowout earnings report). What’s less discussed is that both the Health Care and Industrials sectors are at all-time highs, with Financials, Consumer Staples, and Materials all ~5% or less from new records, as well. Perhaps the best example of market breadth, however, is the recent performance of the S&P 500 Equal Weight (i.e., all 500 stocks get equal representation), which made a new 25-month high last week and sits only 1% below its all-time record. Big Tech remains leadership amid the AI proliferation and resilient U.S. economy, but the overall market is far from narrow.
Furthermore, strength abroad is expanding. Japan, India, France, Mexico, and Taiwan are all at or near alltime highs, with plenty of other markets rallying alongside them. The MSCI All Country World ex-USA index is less than 1% from a new record despite China, one of its biggest weights, being in a deep bear market.
As to the second question, I’m a bit more conflicted. On one hand, there are certainly signposts that enthusiasm for AI is a bit frothy (a la the internet in the late 1990s). At the same time, the companies at the top of the market today are primarily profitable, cash-rich, and low debt enterprises. It’s not that they can’t fall (just look at 2022), but the rich valuations are much more backed up by earnings power and fundamentals than was the case during the speculation seen by late-1999 and 2000.
Another way to look at the question is via Strategas’ bull market top checklist, where they have 0 of 9 items checked (compared to 9 of 9 in 2000 and 2007). Though the market sits near all-time highs, evidence that the current bull market should peter out in the near-term is scant. Is a correction likely? Absolutely. They’re inevitable, even in good times. But the overall market setup looks pretty solid, and while sentiment is something to watch, any unearned euphoria seems in check for now.
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