
LevTrigger
426 posts

LevTrigger
@evansb45
Working with GPUs. Perfektion ist der Feind des Fortschritts. Memes are the DNA of the soul. Trust the government until your pronoun is was/were.






Jane Street made ~$40B in 2025 with 3,500 employees, a ~2x from the year before. At ~65-70% profit margin, that's $8M profit / employee, the highest for a 1000+ ppl company. High-frequency trading continues to be the most efficient money making engine. I want to share an old story about my Jane Street interview in 2014. Jane Street was known for hiring a lot of math, physics and CS olympiad winners from top universities and putting them through many rounds - including, for trading roles, a gauntlet of mental math. It was my 6th interview and my final round and I recall being asked "What is the next day after today in DD/MM/YYYY where all the digits are unique?" They'd toy with you and say "You can use a pencil and paper, if you want" but you knew that was an instant no. Painstakingly and as quickly as I could, I came to an answer. "How confident are you that this is correct on a 0-1 probability scale?" the interviewer said. "0.95", I blurted out, not fully knowing how to answer that. "Are you sure?" After thinking harder for a few more seconds, I realized I could've flipped the digits around to get a closer date. I gave the interviewer my answer. It was correct. "0.95 huh?" he chuckled. That's when I knew I failed. Note: fwiw, other companies that come close in efficiency are - Tether ($90M+ profit/emp) - Hyperliquid ($80M+ profit/emp) and on revenue: - Valve ($50M/emp) - OnlyFans ($37M/emp) - Craigslist ($14M/emp) - Anthropic ($12M/emp, run rate) - OpenAI ($8M/emp, run rate) For comparison, Nvidia is very efficient at scale and is $4.4M/emp.


It's highly nuanced, and I'll explain why it's not late, but late to some: Photonics is the newest supercycle (maybe H1 into H2 2025 was the start). Then there's many different architectural changes in each supercycle: -> $LITE, $COHR, Innolight, $AXTI and these names led the first I did a thesis post on mentioning all four of them as the largest beneficiaries (all are up 500-1000% 1Y) -> $AAOI, $JBL and others types of names are benefit immensely as the transitional bridge (eg. 1.6T pluggable) -> $SIVE, Celestial, Ayar, $POET are others future gens eg. CPO (what I'm focusing on now) -> VisEra, QD Laser, $ALMU and others are likely going to be future gens (quantum dot, different packaging types, etc) if you fast forward 4 years. Of course, $LITE does everything. $AXTI will be used for everything. But the amount of pure play exposure for each architectural shift in each mini supercycle is different. For example, inp usage with quantum dot is still there, but less used. Or DFB laser arrays for CPO instead of EML. There's probably still 50%+ with $LITE and $COHR. And you're a little on the "late" side of things. But you're extremely early to new architecture generations. What I'm trying to do is point regular retail investors into the direction of new gold mines for free. Before institutions figure out sooner or later by paying $20k for equity research reports.




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