Ackman: Speculative Leverage Breaks Markets, But AI and Quality Stocks Offer Opportunities

Key points

• Ackman described current markets as 'broken' due to high leverage and wild price swings, warning that short-term speculation harms the broader economy.
• Pershing Square has capitalized on volatility to purchase Microsoft, Amazon, Alphabet, Visa, Mastercard, and Netflix at discounted valuations.
• Ackman rejected comparisons to the 1920s, arguing current valuations are supported by rising earnings and reasonable multiples relative to growth.
• He identified 'froth' in private venture capital and one-day leveraged options but maintained that public market fundamentals remain solid.
• Ackman stated that AI development is an existential national security priority for the U.S. and cannot be slowed by political rhetoric or opposition to data centers.

Background

In October 2026, Ackman advised investors to hold cash and buy quality stocks during volatility, a strategy Pershing Square used to acquire Amazon. This follows broader market concerns, including Broadcom CEO Hock Tan’s 'casino' comments in October 2026, which triggered semiconductor sell-offs. Legislative efforts to ban congressional stock trading and regulate data centers were blocked by Senate Democrats in late September and October 2026, highlighting ongoing political friction over market regulation.

How outlets are covering it

CNBC emphasized Ackman’s warning that speculative trading and leverage are damaging to the country, while highlighting his firm’s opportunistic purchases. Seeking Alpha focused on Ackman’s rebuttal of bubble comparisons, noting his view that public valuations are reasonable despite some private market froth, and his stance that AI is a non-negotiable national security issue. Funds Society provided a broader view of Ackman’s investment philosophy, detailing his focus on durable competitive advantages and long-term capital duration, using Uber as a case study for buying during fear-driven mispricings. While all sources agree on Ackman’s bullishness for quality assets, CNBC and Funds Society highlight the risks of short-termism, whereas Seeking Alpha stresses the fundamental strength of current public markets.

Why it matters

Ackman’s comments signal a shift in institutional strategy toward exploiting volatility for long-term gains, while his defense of AI against political pushback underscores the technology’s critical role in U.S. economic and security strategy. His warning about speculative leverage highlights potential systemic risks for retail investors and the broader economy, even as large-cap valuations remain supported by earnings.

What to watch

Investors should monitor for continued volatility driven by leveraged trading and speculative instruments. Pershing Square may continue to accumulate positions in high-quality companies during market dislocations. Political debates over AI regulation and data center construction are likely to persist, though Ackman suggests practical implementation will outpace legislative opposition. The upcoming U.S. midterm elections may influence market sentiment, with Ackman predicting a House flip.