Bill Ackman Warns Investors Are Repeating Costly 2000s Mistake: Chasing the New New Thing
Hedge fund manager Bill Ackman, in an All In podcast interview, said investor behavior resembles the 2000 dot-com bubble, with capital chasing “new” sectors like chips, semiconductors and energy while “high-quality” stocks may be neglected. He cited past valuation swings, argued companies such as Amazon, Meta and Microsoft remain undervalued, and noted Pershing Square’s April IPO.

Article frames MSFT as an AI beneficiary and potentially undervalued after an earnings-driven dip.
Ackman says his fund opened a Microsoft position after the stock fell post-earnings and views it as an AI winner.
Mild positive bias; likely supports dip-buying rather than a new catalyst.
Background
Bill Ackman discusses market psychology parallels to the dot-com era and argues investors are over-allocating to the newest trend while neglecting quality.
Why it matters
The only potentially tradable element is the mention of Ackman opening a Microsoft position after an earnings-driven decline, plus qualitative risk flags for software (including Salesforce).
Market relevance
Provides a ‘quality undervalued vs crowded trend’ narrative with a couple of named-company calls (MSFT positive, CRM risk).
Market effects
Reinforces a rotation narrative: capital chasing semis/energy while ‘quality’ software/mega-cap AI winners may be overlooked.
Primarily US large-cap/tech sentiment; no regional policy or macro trigger cited.
AI and semiconductor cycle psychology can spill across global tech/semis positioning, but no direct global catalyst is provided.
Alternative perspectives
If the ‘new new thing’ trade is still in an early phase, Ackman’s ‘left behind’ framing could lag and underweight winners in semis/energy.
The article is opinion-led; it doesn’t quantify AI enablement progress, competitive dynamics, or valuation changes for the named software/mega-cap firms.
Key entities
- personBill Ackman
Hedge fund manager commenting on market psychology and AI-related disruption risk.
- companyPershing Square
Ackman’s firm referenced in the context of taking it public via a large IPO.
- companyMicrosoft
Named as an AI winner; Ackman says a new position was opened after post-earnings weakness.
- companySalesforce
Named as a company Ackman would be concerned about if it isn’t sufficiently AI-enabled.





