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A physics based explanation of why life exists in the universe medium.com/p/1131c68fc784
The only way we are going to get data centers in space is with adiabatic chips, or there is a fundamental geometric problem with heat radiation researchgate.net/publication…
This was my core thesis for shorting AI infrastructure. The interest rates on the debt require smooth deployment, but electricity and compute delivery move at different speeds.
Business Insider confirms it: Amazon has warehouses of GPUs that can’t be installed, and is buying them so far in advance that a supply chain team said they “didn’t have a clear forecasted path” to installing them.
businessinsider.com/amazon-2…
Citrini with yet another gonzo-investment banger. I love this firm.
What is AI really capable of in bio?
To separate hype from reality, we spent 3 months working firsthand with @AnthropicAI's internal research model to see if it could create an experimental scorpion antivenom.
Introducing Citrini Therapeutics.
citriniresearch.com/p/citrin…
The British govt is *reportedly* considering adopting an EU law that would prevent the British state from using non-European AI models. This would be very dumb and I think it is so self-evidently dumb that it won't happen, but you never know.
neilobrien.co.uk/p/the-eus-n…
Build first, regulate second. This is potential economic and security suicide.
The British govt is *reportedly* considering adopting an EU law that would prevent the British state from using non-European AI models. This would be very dumb and I think it is so self-evidently dumb that it won't happen, but you never know.
neilobrien.co.uk/p/the-eus-n…
David Galbraith retweeted
This is a stupid proposal that would make Britain, as well as the EU, an AI backwater, lower the quality of public services, endanger citizens and leave the public sector extremely vulnerable to attack.
We should want state systems to be secured by the best cyber defence, which has to mean access to frontier models. We should want defence making strategic decisions and using cutting edge tools, which again, means access to frontier models. As it stands none of this can be built in the UK or the EU and may never.
Hopefully Sam’s right that this is such a bad idea that it never actually happens.
The British govt is *reportedly* considering adopting an EU law that would prevent the British state from using non-European AI models. This would be very dumb and I think it is so self-evidently dumb that it won't happen, but you never know.
neilobrien.co.uk/p/the-eus-n…
David Galbraith retweeted
The advanced search feature lets you find 100 ideas that match your skills and passions..
🔹 Bill Gross launched Idealab.ai, which analyzed more than 17 million sources to generate 1.2 million business ideas.
🌐 axios.com/2026/10/19/bill-gr…
Sort by your own skills, then test one cheaply before you build.
The death of the British high street: thrift shops; money laundering; private equity.
Almost the entirety of the British Highstreet is now made up of 3 types of businesses:
1) Private Equity owned companies (Pizza Express, Burger King, Cafe Rouge, The Body Shop, Wagamamas, Zizzi, New Look, Bella Italia, Boots, WH Smith, etc)
2) Foreign owned businesses acting as fronts for skilled visa migrant scams and/or money laundering enterprises (Hairdressers, Kebab Shops, Vape Shops, etc)
3) Charity Shops. Largely in existence to sell off items left when people die.
It's difficult to imagine anything more dystopian than this.
I fact checked this and it is depressingly accurate.
Almost the entirety of the British Highstreet is now made up of 3 types of businesses:
1) Private Equity owned companies (Pizza Express, Burger King, Cafe Rouge, The Body Shop, Wagamamas, Zizzi, New Look, Bella Italia, Boots, WH Smith, etc)
2) Foreign owned businesses acting as fronts for skilled visa migrant scams and/or money laundering enterprises (Hairdressers, Kebab Shops, Vape Shops, etc)
3) Charity Shops. Largely in existence to sell off items left when people die.
It's difficult to imagine anything more dystopian than this.
Increasingly likely that humans are result of an 80/20 mix with another population, more than a million years ago.
David Galbraith retweeted
The most valuable thing you can do right now is find a way to make an unverifiable domain verifiable by AI and let it rip.
notes on using AI productively:
- you can separate most work into two buckets: AI-verifiable and not. how you should work depends on which bucket your work falls into
- "verifiable" boils down to whether AI can independently tell (verify) if work that it completes is good or not.
- if your work is verifiable, design a verifier or system of verifiers and "let 'er rip." use as much AI as you can and get out of the way. you're not the bottleneck anymore, so no marginal attention is required as tasks scale.
- if it might be verifiable, you can try building an AI judge. but you need evals to test the judge's competence. @hammer_mt is my go-to on how to do this well. if you can get your judge good enough, you have verifiable work. back to throwing as much ai at your work as you can
- sometimes a good judge is easy to build, sometimes it's so hard that you may as well not bother.
- if your work can't be verified by an AI, that leaves you or someone else as the judge. treat it like the olden days but with AI help. one or two tasks at a time, avoid context switching, protect your focus
- sometimes, there are verifiable sub-tasks within larger pieces of work. The same process re: judgment and eval-building applies to these sub-tasks. The more you can automate these away, the more you can focus on the pieces that you're uniquely suited for.
I bet against Coreweave and Nebius and more broadly AI infrastructure a month ago, not because I think AI is overhyped, I think it will continue to change the world unimaginably. I did this because I witnessed the dotcom and telco crashes first hand and I can see history rhyming.
$NBIS Taking a step back after the drawdown
What I always do for my investments when they experience such a dramatic fall every time is take a step back and look at everything again over the weekend with a cool head, so as not to mix emotions and facts.
1) Thesis
First of all, I attach the updated thesis that I published at the end of September, and I think this is what you should go back to first, as it makes you remember all the verticals that the company is currently progressing on, and it shows you why I believed in the company in the first place (and still believe obviously)!
I believe that nothing has changed since September 2026, and many would argue that things even improved.
2) CapEx/Debt debate
A lot of things were said during this week regarding CoreWeave financials and their implications for the whole neocloud sector. I think it is fundamentally wrong to compare CoreWeave with Nebius and IREN, for example, because each company has a different strategy. In my opinion, the biggest problem for CoreWeave compared to these two is the fact that they sold out their whole 2027 capacity, and overall their deal profile is long-term contracts with terms that do not reflect the current prices. Combine this with their annual interest and potential difficulties to raise additional capital, and you have a problem.
I absolutely disagree with statements that if Nebius were to succeed, CoreWeave must succeed as well. However, that’s not what I really care about today, as I want to discuss Nebius as my biggest position. (Good luck to CoreWeave, as it would definitely be better if they managed to get out of this negative perception!)
So what is the current situation for Nebius?
If we assume the high end of the 2026 CapEx guidance - $25B and look at the gap between what Nebius already spent on CapEx and what is left to spend (we don’t really know what happened since June 30, so we have to work with that):
- CapEx spent in H1 2026 - $8.13B
- CapEx required to meet guidance - $25B
- 2026 Remaining CapEx (as of June 30) - $16.87B
What is the cash situation?
- Unrestricted cash on June 30 - $8.04B
- July secured debt facility - $0.775B
- August convertible financing - $5.75B
This gives us approximately $14.5B in cash and financing resources, which creates roughly a $2.3B gap to cover the remaining CapEx.
We also have to assume that Nebius wants to still finish the year with some unrestricted cash, so let’s assume the $8B similar to its June 30 position.
This means that Nebius needs ~$10.3B of additional net cash inflow during H2, and let’s discuss where they could get this money before people start with the FUD that we will get diluted or Nebius will take on an additional $10B of debt (trust me, they will eventually, you have to account for that).
2.1) Customer prepayments
Management expects more than $9B of upfront customer funding in 2026, but don’t forget that is for the entire year. If we look at the H1 cash-flow statement, we can see a $4.4B positive change in deferred revenue, so we don’t know for sure, but we can expect several billion dollars of additional customer funding arriving during H2, which helps significantly with this gap.
2.2) Operating cash generation
H1 operating cash flow was $109M, and I believe that we can expect at least $400M of operating cash flow in the rest of 2026. Nothing significant, but still almost half a billion dollars.
2.3) Additional asset-backed financing
People completely forget that this is actually the most important and plausible source of capital. Management said that more than $40B of additional customer commitments could support a similar financing structure to the $775M secured facility in July, where Nebius borrowed against deployed GPU infrastructure and contracted cash flows from investment-grade customers.
Overall, to maintain that $8B cash buffer, I believe Nebius still needs to find approximately $5-$6B of further financing excluding operating cash flow and customer prepayments, which we will know more after Q3 earnings (second week of November most likely).
Remember, $5-$6B of additional cash if they want to keep that financing buffer, but if they think that now is not the right time to seek capital, they are covered for 2026 despite what many tried to tell you during this week. So again, everyone panicking before double-checking the facts...
3) Mismatch between my expectations and the street’s consensus
Probably something that makes me most bullish still, and I keep going back to this number is the extremely slow progression curve that the street is expecting. To be fair, I am not surprised that the consensus right now is that Nebius is not a great investment if they expect them to announce $16B in ARR by the end of 2027.
I don’t know what the exact consensus on the active capacity at that time is, but with that estimate, I would be bearish as well, as the economics wouldn’t make much sense at that point, and this is where I believe the big re-rating will happen - Q3 earnings.
I believe many saw the post from @SMASIMHO, where he showed the least bullish base case you can ever see (on purpose), but I will repeat it, so you don’t have to switch between posts:
- 2026 ARR guidance is currently $7-$9B, and I will confidently say that we can assume the midpoint of $8B
- Already confirmed capacity for 2027 is 800MW, and that will most certainly be around 1GW, and in my valuation model, I currently assume 1,700MW of active power by the end of 2027
You can probably understand by now that $16B in ARR is complete nonsense because that would imply -> $9.4M/MW, which is below the bare-metal deals around $11-$12M/MW
I’ll just use my estimates of 1,700MW of active power and blended revenue per MW of $21.1M. First of all, I am already quite bullish in my base case, but we only see GPU prices increasing, and until I see actual cracks in the data, I won’t be lowering my expectations. For those who read my valuation model, I am way above $30B in exit 2027 ARR, but even if we assume my bear case of $25.8B, it would still be 61% higher than what the street is expecting - 61%
My next point would be whether the deals are actually profitable and how much FCF is actually generated, but I am preparing a longer article on this topic because many people apparently can’t do math on X (spoiler: a lot of FCF for Nebius).
So yeah, I am still calm and collected going into the next week and I would summarize it like this:
- No signs of demand slowing from Nebius
- Deals make sense economically
- Sentiment shifted, which is normal
- Thesis is still intact
- Pumped for Q3 results
Thanks for your attention!
The internet created distribution network effects (users get users) so equity financing flowed from VCs to startups and overshot (and dotcom crash preceded the infrastructure one). AI's production side network effects (software creates software) did the opposite and channeled massive debt financing upstream to infrastructure and it has now overshot, where any delays or hiccups will create systemic contagion.
Nice try to pump, but one millionth of one percent of the company isn't going to do anything.
$NBIS OMG WOW NEBIUS DIRECTOR MAKES ABSOLUTELY MASSIVE OPEN MARKET PURCHASE HOW DID I MISS THIS OMG THIS THING WILL FUCKING RIP ON MONDAY
As a radical centrist, X has some very toxic people on the Right and normal relatively apolitical people with content that isn't defined by political stance. Bluesky has some very toxic people on the Left (and to be fair people who were just sickened by the political content on X) but less apolitical people because its raison d'etre was political, whereas X's was a later layer. As the tools get better to mute the toxic content and bots, people are coming back to X and there's more, high quality content from experts and leaders, amongst the rage baiting and garbage.
Last year I thought Threads was an existential risk to X.
When Meta puts its full weight behind something -- by injecting the app into Instagram, it’s DEFCON 5:
You have to squeeze out every last drop of growth from all available surfaces to save the app.
However, I started to realize that the opposite was happening:
It was strengthening X.
If you look at any announcement by Zuck, you will see the most rude & toxic comments on the internet.
But when he makes those same announcements on X, people are thrilled about how he’s pushing humanity forward. X is a place where people are excited about the future, so it’s no surprise he and his top lieutenants are using it more than their own app.
Threads — and Bluesky — have effectively quarantined some of the worst people on the internet.
And so I had an epiphany: those apps are X’s anti-abuse systems.























