CEO, Co-CIO of Cambrian Asset Management, a quantitative trading firm.

Joined March 2007
409 Photos and videos
Pinned Tweet
21 Sep 2017
10 years from now - it's 2027, we'll look back and say, how did the financial system not see all this coming?
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It definitely feels like Anthropic will win the high end and Google will (or should if it fights on low or free price) win on the volume side. Where does that leave OAI? No margin, no growth?
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“Welcome to 2026, or 1926. Either way, most will find out that even humans hallucinate. And worse than the machines they bet on” @om is such a wonderful writer.
Jun 4
Clueless nature of @business their utter lack of history of @awscloud and how it came about and how it scaled is shameless, given they have @BradStone who damn wrote a book of it. Kudos @edzitron you say scary things. I tru and say the same things my way, because I am well, OG and have learned to be cautious vs caustic at times. But I can stop reading you. 👍🏽👍🏽 It’s not about the inevitability about the internet, or commerce or ai. The madness is about the math that does not make sense. Ai is inevitable. So is math madness. *** Here are my recent pieces about AI om.co/2026/05/29/anthropic-a… om.co/2026/05/21/the-rocket-… om.co/2026/05/01/what-micros… om.co/2026/04/30/what-i-lear… om.co/2026/04/30/with-ai-hea…
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Martin Green retweeted
I see some of you are discovering our talented friend, Samuel, for the first time :)
At the school talent show, 11-year-old Samuel didn’t just find his voice — he found his flock. The autistic student with Tourette syndrome can mimic 50 different birds, a talent that had gone unnoticed until that unforgettable performance. @SteveHartmanCBS is On the Road.
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Well researched and informative article on actuators, their importance, and two US startups attacking the strategic supply chain problem.
my magnum opus: the tiny part inside every robot and drone that america can't make anymore — and the two startups betting opposite ways on how to fix it
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Martin Green retweeted
Richard Feynman's Restaurant Riddle Feynman once wondered how many dishes at restaurants one should try before settling on the tastiest (and maximizing the overall quality of one's meals). New mathematical result offers a solution pnas.org/doi/full/10.1073/pn…
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Martin Green retweeted
Once you internalize the auto-research concept and use /goal with it, you unlock ridiculously fast app improvement on anything that has a numeric rubric. We’re all still too rooted in the “labor is expensive” world.
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Amateur traders armed with AI trading algos are going to be like the technical analysis / chart traders. A false sense of precision and a great source of alpha. Cliff knows what he's talking about. ML is a god at reward hacking. You have to use it with judgement.
Cliff Asness (the co-founder of AQR, who manages billions) on the one belief about that most of his peers would disagree with: "as we move into a world where machine learning is becoming a bigger part of the quant toolkit, we are big believers that economic intuition as a restraint on overfitting is still pretty important." "finance is still a high noise to signal ratio place. in that world, overfitting is a problem." "but one thing ML has done is point out that underfitting is also a problem. and you have to balance the two." "not using these techniques was probably underfitting and missing some of the true complication." this is the most balanced take on ML in trading i've heard. it's both problems exist simultaneously and the skill is balancing them. but for the regular retail trader, I would still say stay far away from machine learning, you will likely just overfit.
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Martin Green retweeted
Math and finance nerds that love prediction markets should love perps even more. Prediction markets : perps :: n! : Γ(z) Perps are simply the analytic continuation of event markets: from discrete terminal bets to continuous mark-to-market exposure.
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29 Aug 2025
The Singapore government is likely the most competent govt in the world. The measure of govt competence is the ability to effect the promises made.
Replying to @govsingapore
Get help to quit from the QuitVape Programme at gov.sg/stopvaping
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experimenting with GPT5 after working on Gemini augmented Jupyter notebooks - holy crap it's bad. Fixes which create other problems galore. Total gaslighting about what it fixes. the confidence is inspiring. but Jesus get it right.
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glad to hear they have tuned it. will try again.
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Shelly Ann Fraser Pryce! So cool. Can you imagine being another mom at the race and saying you got to see first hand what greatness looks like.
When an Olympic champion decides to compete in her parents' race at school and no one has a chance
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"letting startups grow.." if memory serves, the gov't blocked a consensual acquisition. gaslighting and resulting. good lord let it make sense in a free country.
1 Aug 2025
A great reminder that letting startups grow into independently successful businesses, rather than be bought up by existing giants, can generate enormous value. A win for employees, investors, innovation, and the public.
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Martin Green retweeted
I welcome in-kind creations and redemptions for crypto-asset ETPs, a feature that ETP sponsors and investors have wanted since the initial approvals of crypto-asset ETPs: sec.gov/newsroom/press-relea…
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Govt services
What's something stupidly expensive that people keep buying even though it's never worth the price
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Martin Green retweeted
@marting, CEO and Co-CIO of Cambrian Asset Management, recommends "Elements of Quantitative Investing" (by Giuseppe Paleologo, Head of Quant Research at BAM) and "Project Hail Mary" by Andy Heir (definitely read the book before you see the movie next spring).
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Martin Green retweeted
This week, we asked the @NetworkMedici to share summer reads - books, blogs, pods. Read on for recs from founders, traders, fund managers, and others. May the fourth be with you 🫡 🇺🇸
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Rest in peace.
ROG WRITES: Devastated to wake to the news that Liverpool’s Diogo Jota has passed away. The 28-year-old forward, who played the game with humility, clinicality, and a childhood glee was reported to have been in a car crash in Spain. He died alongside his brother André Filipe, a professional soccer player in the Portuguese second division. It is an awful, unfathomable story which hits so hard. A month ago Jota was walking around Anfield as a champion. He then paraded through the streets of Liverpool with his team and the Premier League trophy. On June 8th, he won the Nations League with Portugal. Ten days ago, he was married. The photographs he posted depict a beaming human being, on top of the world, standing proudly alongside his wife, Ruta Cardoso, and his three young children. Images of beauty. It is now heartbreaking to contemplate and impossible to process. Words cannot be summoned to capture the enormity of the shock and the loss. As Jurgen Klopp, a man of enormous faith posted, “this is a moment where I struggle! There must be a bigger purpose! But I can’t see it!” Remember Diogo like this: Scoring his last goal. For Liverpool, dancing through the Everton defense to deliver Derby Day glory. As he often said, the football field was where he felt most alive, and he made so many Liverpool fans experience some of their most powerful collective memories that will live on forever. Our thoughts and love go out to Diogo’s family, all at Liverpool Football Club, and Liverpool supporters across our own community. Savor every second of life. Never take a moment for granted. #YNWA 🙏🇵🇹💔
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my guess is he will pay a lot of taxes on this, and yet be used as a foil for the "fair share" people.
1 Jul 2025
Jeff Bezos sold 3.3 million Amazon shares in recent days, netting $736.7 million bloomberg.com/news/articles/…
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