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Monday, October 19, 2026

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From June 1 to October 16, Boost Run $BRUN fell 77.3%, vs. 37.4-58.7% for CoreWeave $CRWV, Nebius $NBIS, and $IREN. That drop in AI infra stocks is tied to to rising bets on another Fed rate hike. Higher rates hurt GPU clouds in two ways, since they (1) raise the cost of the debt that pays for their GPUs and (2) lower what investors will pay today for profits that arrive years later. But all three peers kept or raised their 2026 targets: → $CRWV: Raised its 2026 revenue guidance to $12.4-13.2B on its Q2 call. → $IREN: Raised its year-end ARR target to more than $4B on July 20. → $NBIS: Reaffirmed its 2026 guidance with its Q2 results. The problem is that lenders are charging more now. CoreWeave’s 9.625% notes due 2032 yielded 14.74% on October 16, up from 13.19% on October 1, meaning CoreWeave would likely pay ~15%/year to borrow the same way today. So the selloff came from how investors now see the cost of funding the demand for GPU clouds, not from the demand itself.

Investor Letters

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LXS.DE: a 2028 sale it can force

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Trade Ideas Flow 17 clicks

Build-A-Bear: A Narrower Path

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BW · short

Babcock & Wilcox

Babcock & Wilcox is priced for AI power demand despite a one-time related-party project, with FY2028 EBITDA 35% below consensus implying…

BW $708M
Value Investors Club 2 clicks

Vertiv Holdings Co. (VRT)

Vertiv's 33% stock decline followed a 2026 forecast increase, despite a $15 billion backlog and rising AI data-center demand for power and…

VRT $79B
SixSigmaCapital: Navigating the Financial Markets

What I’ve Been Up To

Cogent Communications and AI data-center bottlenecks feature in a newsletter update on recruiting, financial media and conference takeaways.

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Stock Thoughts 4 clicks

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