Posts
AI’s Next Trillion-Dollar Bottleneck Might Be Light
Everyone talks about GPUs, power demand and data centers, but I think one of the more interesting long-term bottlenecks is being overlooked: **photonics**. The basic idea is simple. As AI clusters get larger, the problem is not only compute. It is also data movement. GPUs, servers and racks need to …
LVMH, Moët Hennessy Louis Vuitton ($MC) a French Luxury giant for a global wealth recovery play
For a quick refresher, LVMH is the world’s dominant luxury goods conglomerate, managing a portfolio of 75 prestigious houses across fashion, leather, jewelry, and spirits. They are the active brand engine behind massive, globally recognized status symbols like Louis Vuitton, Dior, Tiffany & Co., and Hennessy. Global demand for ultra-luxury …
I’m struggling with how to value semis when the earnings are real but probably not normal
I keep seeing the same argument around semiconductors: “it’s not a bubble because the earnings growth is real.” I don’t totally disagree with that. NVDA, AMD, MU, and the rest of the AI hardware chain are not random 2021 SPACs with no revenue. There is real demand here. Data centers …
Berkshire Hathaway now owns 10.32% of Marubeni Corp. and 10.83% of Mitsui & Co., LTD - disclosure filing with Japan FSA (in Japanese)
Marubeni: [https://disclosure2dl.edinet-fsa.go.jp/searchdocument/pdf/S100YO0N.pdf?sv=2020-08-04&st=2026-07-01T09%3A52%3A37Z&se=2031-07-01T15%3A00%3A00Z&sr=b&sp=rl&sig=m66kSbwZhaJPCeD8PiyBo9HrgoDtJqMFpuIammlWznk%3D](https://disclosure2dl.edinet-fsa.go.jp/searchdocument/pdf/S100YO0N.pdf?sv=2020-08-04&st=2026-07-01T09%3A52%3A37Z&se=2031-07-01T15%3A00%3A00Z&sr=b&sp=rl&sig=m66kSbwZhaJPCeD8PiyBo9HrgoDtJqMFpuIammlWznk%3D) Mitsui: [https://disclosure2dl.edinet-fsa.go.jp/searchdocument/pdf/S100YO1O.pdf?sv=2020-08-04&st=2026-07-01T09%3A52%3A28Z&se=2031-07-01T15%3A00%3A00Z&sr=b&sp=rl&sig=KRHDYQoqKugzN2cL9DclIW8sXlB0V1cdipSk4jVXSFg%3D](https://disclosure2dl.edinet-fsa.go.jp/searchdocument/pdf/S100YO1O.pdf?sv=2020-08-04&st=2026-07-01T09%3A52%3A28Z&se=2031-07-01T15%3A00%3A00Z&sr=b&sp=rl&sig=KRHDYQoqKugzN2cL9DclIW8sXlB0V1cdipSk4jVXSFg%3D) Berkshire Hathaway's ownership of Marubeni crossed the reporting threshold on June 25th, Mitsui on June 24th. After the disclosures last May for increases in ownership of Sumitomo and Mitsubishi, I expect that we'll see a future Berkshire Hathaway filing for Itochu Corporation.
What do you guys think about the theory of an AI-bubble?
I watched the diary of a CEO where Jeremy Grantham argued that we are experiencing an AI-bubble right now which will eventually burst. Looking at the graphs of 10 years for most of the tech companies right now I realized it kind of makes sense as they are experiencing the …
I built SaaS in four weeks only using Claude Code
About four weeks ago I decided to start building a CRM tool that is specialized in Customer support. I had decided to build this after having four experiences related to customer support that, in my opinion, were quite inefficient. I have used Claude Code and since two weeks i have …
The formula for value investing.
Below is the formula for value investing as well as why this subbreddit is a contrarian investing subreddit and not a value investing subbreddit. Step 1: Do I understand the business? Step 2: If I understand it, then is it predictable? By predictable, I don't mean predicting how much money …
Brightstar Lottery best ever start to a quarter
The mega millions is at $542m The Powerball is at $375m The super enalotto is €187.5m When was the last time the 3 jackpots were all at least this good entering a new quarter? Never. This is the first time in history that all three of these major lotteries have …
Could You Be Fooled by a Ponzi Scheme? You’d Better Believe It - wsj
*(TLDR: why rational people are often easily fooled. See below comments on the Robert Cialdini whom the author references)* Could You Be Fooled by a Ponzi Scheme? You’d Better Believe It - wsj https://www.wsj.com/finance/investing/could-you-be-fooled-by-a-ponzi-scheme-youd-better-believe-it-e159c87 Jason Zweig By Jason Zweig June 30, 2026 at 9:55 am ET Fellow investors, If it’s …
I tracked how Buffett's concept of "moat" evolved across 60 years of shareholder letters. He didn't even use the word until 1986
I built a knowledge graph from every Buffett shareholder letter (1965-2024) and every annual meeting transcript, tracking how his key concepts emerged and evolved over time. Here's what I found about "moat", one of his most famous idea: The concept existed for 20+ years before Buffett named it. From 1965-1985, …