Saturday, October 24, 2026

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Tower Semiconductor Deep Dive

Tower Semiconductor’s low-loss photonics chips halve lasers in 1.6T optical modules, supporting a $680 million annualized photonics run rate and customer wafer prepayments through 2027.

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@StableBread 2 clicks

Fajasy on X

Only part of the $1.0-1.2B Boost Run $BRUN expects to spend on GPUs in 2026 is paid in cash up front. $BRUN plans to pay for the GPUs with (1) customer prepayments and operating revenue and (2) equipment leases that spread the cost over the lease term and generally end with an option to buy the GPUs outright. During H1 2026, lessors (the companies that buy the GPUs and lease them to $BRUN) funded $268.3M of new GPU equipment through finance leases. $BRUN made $39.4M of advance payments to secure those leases and paid $29.6M in cash for equipment it bought outright, so lessors funded 79.5% of its $337.3M of new GPU equipment. The $268.3M came from 34 separate GPU leases with 30- to 36-month terms, and the June 30 lease schedule implies an interest rate of ~7%. Its finance leases as of June 30 call for $103.5M of payments in 2027 and $99.8M in 2028, then just $12.1M in 2029, about when its three-year contracts end. So the lease debt runs off with contracted revenue, not with renewals $BRUN still has to win. Customer deposits, the payments customers make up front on their contracts, were $128.4M as of June 30. New deposits made up $112.9M of H1 2026’s $114.2M of operating cash flow, while $BRUN paid $99.9M on its finance leases over the same six months. Effectively, customers’ prepayments are already paying for the GPUs they rent. Founder and CEO Andrew Karos said on the Q2 call that every deal $BRUN closes comes with a prepayment, averaging 22% of total contract value (TCV). The June and July orders alone carry $93.6M due by their start dates ($37.9M on November 30 and $55.6M in installments through March 2027). Karos also said $BRUN’s TCV-to-capex ratio, its contract value divided by what the GPUs cost, keeps rising to 1.4 and above as contracts get longer. So a three-year contract brings in ~$1.40 for every $1.00 of GPUs, which also has to cover the lease interest, the rent, and the staff. In other words, a three-year contract mostly covers the GPUs and the cost of running them, so how much $BRUN makes on those GPUs depends on renting them out again after the leases end in 2029, without lease payments, at whatever older B300s fetch by then.
@convequity 1 click

Convequity on X

SpaceX ($SPCX) targets 13GW, close to our own estimate. In August 2026, our calculation put SpaceX's visible compute capacity over the coming years at roughly 13GW. On the Q3 call, Elon Musk targeted 13GW online by the end of 2027. The numerical match is encouraging. Musk's target concerns terrestrial compute, while our work examined the longer-term orbital opportunity. It supports our view of the scale SpaceX can pursue, although the deployment path and timing differ. We see 13GW as an achievable first stage of the buildout. SpaceX's ambition to manufacture 100GW of solar panels annually never meant all of that would become operating AI capacity in the near term. Our calculation focused on how much capacity we could see a credible path to deploying. For orbital compute to reach 20–30GW and keep growing, solar manufacturing becomes much more consequential. SpaceX needs high-efficiency cells produced at scale in the US, or an alternative supply route that gets those panels integrated into AI satellites. More power from each kilogram of solar hardware means more compute capacity for the mass launched. Starship has now demonstrated orbital payload delivery. In our view, that clears the fundamental launch hurdle and gives us a high degree of confidence that the first 10–20GW can reach orbit relatively soon, with or without rapid reusability. Much larger deployments require rapid reuse. Flying the same vehicle repeatedly reduces the number of new rockets SpaceX must manufacture and allows launch capacity to grow with a smaller fleet. Solar production and launch cadence then have to expand together. We think SpaceX will get there. The pace of high-efficiency solar production, satellite deployment and Starship turnaround will determine how quickly it can move beyond the first tens of gigawatts. #SpaceX

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