We Asked Chris Bloomstran Why He Won’t Own the S&P 500 At These Levels — And What He Does Instead

The "secular plateau" thesis

Bloomstran updates his 2021 secular peak call to a "secular plateau," allowing for a multi-year window of elevated prices similar to Irving Fisher's infamous 1929 observation, suggesting cap-weighted indices remain dangerously stretched.

Unprecedented dominance of the Magnificent Seven

The top seven companies comprise roughly one-third of the S&P 500 despite representing only low-teens percentage of sales and approximately a quarter of profits, a concentration level not seen in 50 years.

Historical impermanence of market leaders

No historical decade has maintained the same top 10 constituents, implying today's dominant firms must sustain returns on both existing operations and massive new AI infrastructure investments to merely maintain current valuations.

Hyperscalers' asset-heavy transformation

Major tech companies are doubling their infrastructure size to pursue AI dominance, shifting from asset-light models to capital-intensive businesses that must generate returns on both legacy and new assets simultaneously.

Circular revenue recognition

Much current AI revenue consists of hyperscalers lending to, borrowing from, and making capital investments in each other rather than generating sustainable external customer demand.

Classic capital cycle dynamics

Bloomstran views the massive industry-wide investment in data centers and chips as a traditional capital cycle that typically leads to oversupply, capacity gluts, and ultimately diminished returns rather than sustained competitive moats.

Portfolio of stocks versus owning the market

Bloomstran distinguishes between owning "the stock market," which he avoids at these levels due to skewed math, and owning a curated portfolio of individual businesses selected based on valuation and quality regardless of index weighting.

Strict leverage discipline

Given concerns about corporate and federal debt levels, he prioritizes companies with minimal leverage or net cash positions, avoiding firms that employ significant borrowing for buybacks or AI arms races.

Navigating rolling secular tops

Citing Hemingway's "gradually at first and then suddenly," he notes that secular peaks resolve over years or decades with rolling declines and recoveries, requiring patient capital deployment and tolerance for tracking error.