Bullpen.News From Edwin Dorsey
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Sunday, October 25, 2026

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@convequity 1 click

Convequity on X

If scale-up uses VCSEL arrays, we think Lumentum ($LITE) would compete with several vendors, eroding its valuation's scarcity premium. Many smart investors are bullish and credit Lumentum with an exclusive ability to make ultra-high-power CW (continuous-beam) lasers for scale-up links between AI chips. If those links go wide and slow (many small VCSEL or microLED emitters, each at modest speed), that case could break down. Lumentum's own Open Compute Project demo used VCSEL arrays from its smartphone 3D-sensing manufacturing platform. The demo is an in-rack proof of concept, not a replacement for every higher-power laser. Credo ($CRDO) opened a workstream with a hyperscaler and ams OSRAM to standardise wide, parallel links, citing supply-chain resiliency, targeting 2027 approval. VCSEL arrays are tested on the wafer, so they are cheap in volume. The standard would let operators buy from Coherent ($COHR), ams OSRAM and others. In that case, we think Lumentum competes on scale and cost, not scarcity: customers can switch, pricing power and margins come under pressure and share must be won. Near-term earnings can still benefit from the laser shortage, with Lumentum sold out through early 2029.
@BrokenMoats

Broken Moats on X

Specifically on $DOCU which is approaching levels not witnessed since 2021. Not only is there the rates sensitivity (usually software long duration, higher rates should hurt (been opposite this rate move for now) and the exposure to AI threats (how hard is it to rewire an esignature) even if you want to put those two aside, the business has a significant exposure to the real estate (mortgage, refi, etc) industry and that by all accounts is not performing well (see starts data today, number of existing closings, etc)... seems like this lack of pricing fundamental developments of the business is the tell tale that the move is not based in anything more than a squeeze it would seem. Would love to know from any buyers, why buy here, and what causes you to sell (purely momentum?) It would seem a deep rerating (the opposite from last earnings set up) might be coming for the software trade (especially if AI trade comes back to close out the year). Upsetting they are so inversely correlated, because AI rate of change spending levels does not matter, current AI is enough to present problems for these software providers, at some point that linked should break as AI spend less still won't save software names from their problems

Investor Letters

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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…

TSEM $19B
CV's Substack 9 clicks

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
JBFCY · long

Jollibee Foods CORP

Jollibee Foods trades at PHP 144, about 56% below its January 2019 high, framing a long thesis on the Philippine restaurant operator.

JBFCY $2.5B
Value Investors Club 1 click

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

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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