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FourWeekMBA x Business Engineer | Updated 2026
Historical perspective on market valuations reveals an uncomfortable truth: only the dotcom bubble exceeded current P/E levels. The comparison invites obvious questionsโand demands careful analysis.
Source: Goldman Sachs, The Financial Times
The data is stark. By most valuation metrics, markets trade above levels seen at any point except 1999-2000. The concentration in a few mega-cap tech names amplifies the comparisonโtoday’s “Magnificent Seven” echo that era’s darlings.
Why It’s Different (Maybe)
Bulls offer valid distinctions. Today’s expensive companies generate massive profits; dotcom leaders often had no revenue. Interest rates were higher in 2000, making equity valuations less justifiable. And today’s tech giants have proven moats that dotcom speculation lacked.
Why It’s Similar (Possibly)
Bears note the pattern: every bubble features compelling narratives explaining why “this time is different.” The internet really did change everythingโjust not fast enough to justify 2000 valuations. AI may follow the same path: transformative but overhyped in the short term.
The margin of safety concept applies: at current valuations, everything must go right. The asymmetry favors caution.
For market analysis, explore The Business Engineer.
Gennaro Cuofano is a CRO and tech executive who has worked in AI since late 2015, starting with bringing NLP, natural-language generation, voice and chatbot products to the marketing industry. His background is in law and finance: he holds a Master's degree in Law and an International MBA with an emphasis on corporate finance (LUISS Business School and the University of San Diego, 2012), and worked as a financial analyst at a real-estate investment firm in San Diego and as an assistant controller. His work focuses on business model strategy, business engineering and, more broadly, structural analysis: how companies make money, read from their own filings. He created FourWeekMBA and leads research there and at The Business Engineer, his newsletter on AI and business strategy, with over 95,000 subscribers and more than 1,000 published analyses. His writing has also appeared on Entrepreneur, HackerNoon and Search Engine People. Find him on LinkedIn and Substack. See how we source.
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