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Consumer sectors reportedly hit lowest S&P 500 weight since at least the 1990s

The Kobeissi Letter reports that consumer discretionary and staples account for about 13% of the index’s market value, down five percentage points since 2022.

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2 Sources, 11d ago, first seen 11d ago

TLDR

The Kobeissi Letter reported on September 19, 2026, that consumer discretionary stocks represented about 9% of the S&P 500’s market value and staples about 4%. Their combined weight averaged about 22% over the preceding 35 years, it said. A reply argues that AI infrastructure stocks’ expansion—not weak staples earnings—is shrinking other sectors’ shares. It also warns that the smaller staples share leaves the index with less cushion if AI capital spending slows.

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2 Sources, first seen 11d ago

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2 Sources, first seen 11d ago

836 likes69 comments111 saves86 reposts

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2 Sources

@KobeissiLetterWith oil and tech stocks surging, the consumer sector has become increasingly irrelevant: Consumer Discretionary and Consumer Staples sectors now account for ~13% of the S&P 500’s market cap, their lowest proportion since at least the 1990s. This figure has declined another -5 percentage points since 2022. By comparison, this weight averaged ~22% over the last 35 years and bottomed at ~16% during the 2000 Dot-Com Bubble. This comes as Consumer Discretionary now represents ~9% of the S&P 500’s market cap, its lowest proportion since the 2008 Financial Crisis. At the same time, Consumer Staples accounts for just ~4%, its lowest since at least the 1990s. Consumer stocks have been left in the dust.
@BullBrezzaThe 13% number is real. But let me tell you what's actually driving it down. Consumer staples earnings are fine. The problem is the denominator. AI infrastructure stocks now represent 42% of the S&P 500's market cap-and 38% of its 2026 earnings. When the AI piece of the index grows that fast, every other sector's share shrinks by arithmetic. Staples didn't lose weight. The index around them got heavier. Here's the mechanism that matters: the AI boom has accounted for nearly half of S&P 500 earnings growth this year. Goldman's chief US equity strategist expects that tailwind to fade in 2027 even if capex keeps rising-because chip margins are likely to compress and the paper gains that inflated earnings this year won't repeat. So the question isn't whether consumers are still buying toothpaste. It's what happens to the index when the sector that's driving half the earnings stops accelerating. Staples at 4% means the defensive ballast is smaller than it's been in decades. If AI capex slows, there's less cushion underneath.
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    2 Sources

    @KobeissiLetterWith oil and tech stocks surging, the consumer sector has become increasingly irrelevant: Consumer Discretionary and Consumer Staples sectors now account for ~13% of the S&P 500’s market cap, their lowest proportion since at least the 1990s. This figure has declined another -5 percentage points since 2022. By comparison, this weight averaged ~22% over the last 35 years and bottomed at ~16% during the 2000 Dot-Com Bubble. This comes as Consumer Discretionary now represents ~9% of the S&P 500’s market cap, its lowest proportion since the 2008 Financial Crisis. At the same time, Consumer Staples accounts for just ~4%, its lowest since at least the 1990s. Consumer stocks have been left in the dust.
    @BullBrezzaThe 13% number is real. But let me tell you what's actually driving it down. Consumer staples earnings are fine. The problem is the denominator. AI infrastructure stocks now represent 42% of the S&P 500's market cap-and 38% of its 2026 earnings. When the AI piece of the index grows that fast, every other sector's share shrinks by arithmetic. Staples didn't lose weight. The index around them got heavier. Here's the mechanism that matters: the AI boom has accounted for nearly half of S&P 500 earnings growth this year. Goldman's chief US equity strategist expects that tailwind to fade in 2027 even if capex keeps rising-because chip margins are likely to compress and the paper gains that inflated earnings this year won't repeat. So the question isn't whether consumers are still buying toothpaste. It's what happens to the index when the sector that's driving half the earnings stops accelerating. Staples at 4% means the defensive ballast is smaller than it's been in decades. If AI capex slows, there's less cushion underneath.
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