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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.

TSEM $19B
CV's Substack 9 clicks

From X

@convequity

Convequity on X

We own both $ONTO and $CAMT because they sell overlapping tools to different HBM makers, and we raised Onto while holding Camtek. In our 4Q26 portfolio rebalance we increased Onto in our portfolio and held Camtek unchanged. Inspection identifies defects. Metrology measures dimensions and material properties to check that manufacturing meets specifications. Both companies sell inspection and metrology tools for HBM and advanced packaging, but their customer exposure differs. Onto is more closely tied to SK hynix's capital-spending plans. Our industry information identifies Camtek as a preferred supplier for Samsung's HBM production lines, and Samsung is investing aggressively to catch up with SK hynix in HBM. Camtek is smaller and more specialized, and we see a technical edge in selected HBM applications. Onto also sells chip-fabrication metrology and packaging lithography, which Camtek does not offer. We raised Onto because increasingly complex chip designs give customers reasons to keep investing beyond the current packaging recovery. We hold Camtek as the more focused advanced-packaging investment.

Investor Letters

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Margin Call

Petrobras’s Morpho-1 well revived hopes that Brazil’s Equatorial Margin can become a major new oil frontier after hydrocarbons were…

PBR $83B
Doomberg 9 clicks

Our Views on CoreWeave

CoreWeave's financial statements point to a business model familiar to the authors after a closer review of the AI infrastructure company.

CRWV $30B
WHAT ARE WE DOING? “Contrarians At The Gate” 12 clicks

Capital Wars

CoreWeave’s $35 billion to $39 billion 2026 spending plan relies on debt as unsecured yields reach 15%, making its GPU cloud expansion a…

CRWV $30B
Net Interest 11 clicks
TCEHY · long

Tencent Holdings LTD

Tencent, valued near $500 billion, is a long idea built on its Chinese gaming, social-network and advertising franchises.

TCEHY $451B
Value Investors Club

Putting bear cases to rest

Medpace authorized $1 billion of buybacks through 2028 after Q3 revenue rose 8.5% to $716 million; service revenue grew roughly 12% as…

MEDP $18B
Best Anchor Stocks 14 clicks

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