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The Heartbeat AI 25 (2026 Edition)
The Heartbeat AI 25 is our quarterly ranked view of the companies that define artificial intelligence today. Early 2026 finds the frontier race genuinely multi-polar — OpenAI, Anthropic, Google, xAI, SSI and Thinking Machines Lab all plausibly in contention — while NVIDIA has evolved from chipmaker to capital-markets actor via its $100B commitment to OpenAI. Vertical AI (Harvey, Glean, Sierra, Cursor, Cognition) has matured into a real software category, each name hitting $3–10B valuations within 24 months of founding. Below, our ranking of 25 companies, with notes on why each earns its spot and what changed since the last edition.
Person of the Week
Weekly profiles of notable family office leaders and investors, curated by Family Capital.
Hall of Fame M&A
Corporations are the best capital allocators.
Top 10 personal bitcoin holdings
Only Americans individuals. "𝘐𝘵 𝘮𝘪𝘨𝘩𝘵 𝘮𝘢𝘬𝘦 𝘴𝘦𝘯𝘴𝘦 𝘫𝘶𝘴𝘵 𝘵𝘰 𝘨𝘦𝘵 𝘴𝘰𝘮𝘦 𝘪𝘯 𝘤𝘢𝘴𝘦 𝘪𝘵 𝘤𝘢𝘵𝘤𝘩𝘦𝘴 𝘰𝘯." —𝘚𝘢𝘵𝘰𝘴𝘩𝘪 𝘕𝘢𝘬𝘢𝘮𝘰𝘵𝘰
PayPal Mafia
This list includes several pre-IPO (2002-feb-14) original gangsters. An extended version of the "PayPal Mafia" as published on Fortune Magazine's 2007-nov-26 issue https://fortune.com/article/paypal-mafia/ Date added = approx date joined as full-time employee. 2021-sep: 500 emp ; 10m accts 2000-apr: 100 emp ; 1m accts (merged company) 2000-feb: 50 emp ; 100k accts 1999-dec: 40 emp ; 10k accts 1999-nov: 30 emp ; 1k accts 1999-oct: 20 emp ; 100 accts "𝘈 𝘴𝘵𝘢𝘳𝘵𝘶𝘱 𝘪𝘴 𝘵𝘩𝘦 𝘭𝘢𝘳𝘨𝘦𝘴𝘵 𝘨𝘳𝘰𝘶𝘱 𝘰𝘧 𝘱𝘦𝘰𝘱𝘭𝘦 𝘺𝘰𝘶 𝘤𝘢𝘯 𝘤𝘰𝘯𝘷𝘪𝘯𝘤𝘦 𝘰𝘧 𝘢 𝘱𝘭𝘢𝘯 𝘵𝘰 𝘣𝘶𝘪𝘭𝘥 𝘢 𝘥𝘪𝘧𝘧𝘦𝘳𝘦𝘯𝘵 𝘧𝘶𝘵𝘶𝘳𝘦." —𝘗𝘦𝘵𝘦𝘳 𝘛𝘩𝘪𝘦𝘭
Gokul’s Advice to Founders
Tips for founders posted by Gokul Rajaram on LinkedIn.
VC homework
This is basically the syllabus to our “The Rules of the Game” class. A list of recommendations on startups and venture capital: its history, must read literature, must watch films, plus other interesting resources we have collected along the way. “𝘛𝘩𝘦 𝘳𝘦𝘢𝘭 𝘳𝘦𝘵𝘶𝘳𝘯𝘴 𝘵𝘰 𝘵𝘦𝘤𝘩 𝘪𝘯𝘷𝘦𝘴𝘵𝘪𝘯𝘨: 𝘣𝘳𝘪𝘭𝘭𝘪𝘢𝘯𝘵 𝘦𝘯𝘵𝘳𝘦𝘱𝘳𝘦𝘯𝘦𝘶𝘳𝘴 𝘤𝘰𝘮𝘦 𝘵𝘰 𝘺𝘰𝘶𝘳 𝘰𝘧𝘧𝘪𝘤𝘦 𝘦𝘷𝘦𝘳𝘺 𝘥𝘢𝘺 𝘢𝘯𝘥 𝘵𝘦𝘢𝘤𝘩 𝘺𝘰𝘶 𝘪𝘯 𝘩𝘰𝘶𝘳𝘴 𝘸𝘩𝘢𝘵 𝘵𝘰𝘰𝘬 𝘵𝘩𝘦𝘮 𝘺𝘦𝘢𝘳𝘴.” —𝘕𝘢𝘷𝘢𝘭 𝘙𝘢𝘷𝘪𝘬𝘢𝘯𝘵
Top 10 family in Space invest
The Heartbeat AI 25 (2026 Edition)
Our ranked list of the 25 companies that define AI in 2026: frontier labs, infra, applications, and the picks-and-shovels. Curated and maintained by the Heartbeat research team.
Magnificent 7
The "magnificent seven" stocks are 7 technology stocks that drove a large portion of the market's returns in 2023 and 2024.