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Instead of one all-encompassing bubble, the market has experienced sequential manias where speculative fervor rotates between sectors (crypto, memes, precious metals). Each mania can crash individually without triggering a broad systemic reset, allowing overall market valuations to remain elevated for longer.

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Speculative manias, like the AI boom, function like collective hallucinations. The overwhelming belief in future demand becomes self-fulfilling, attracting capital that builds tangible infrastructure (e.g., data centers, fiber optic cables) long before cash flows appear, often leaving lasting value even after the bubble bursts.

The current market isn't just an AI or tech bubble. It's an 'everything bubble' fueled by excess liquidity from monetary and fiscal policy, encompassing crypto, meme stocks, SPACs, and both investment-grade and high-yield credit.

Overvaluing assets in a new tech wave is common and leads to corrections, as seen with mobile and cloud. This differs from a systemic collapse, which requires fundamental weaknesses like the massive debt and fraud that fueled the dot-com crash. Today's AI buildout is funded by cash-rich companies.

A true market bubble isn't defined by high valuations but by collective psychology. The most dangerous bubbles form when skepticism disappears and everyone believes prices will rise indefinitely. Constant debate about a bubble indicates the market hasn't reached that state of universal conviction.

Crypto is no longer the only game in town for high-risk speculation. The rise of compelling "frontier" narratives in public markets—like AI, space, and robotics—has diluted the pool of speculative capital that once flowed primarily into crypto, making sustained rallies harder to achieve.

In a technology boom like the AI trade, capital first flows to core enablers (e.g., NVIDIA). The cycle then extends to first-derivative plays (e.g., data center power) and then to riskier nth-derivative ideas (e.g., quantum computing), which act as leveraged bets and are the first to crash.

The current market, with heavy concentration in a few names, is a bubble. However, it's not time to short it. The correct approach is to treat it as a momentum-driven game of 'hot potato,' not a fundamental investment environment. The key is to ride the wave while recognizing its speculative nature.

Unlike the 2008 crisis, which was concentrated in housing and banking, today's risk is an 'everything bubble.' A decade of cheap money has simultaneously inflated stocks, real estate, crypto, and even collectibles, meaning a collapse would be far broader and more contagious.

The current crypto environment mirrors the lead-up to the 2008 financial crisis. 'Good money is chasing after many intrinsically weak assets,' which are then complexly leveraged and integrated into the balance sheets of systemically important institutions, creating a growing, underappreciated systemic risk.

Marks argues that speculative bubbles form around 'something new' where imagination is untethered from reality. The AI boom, like the dot-com era, is based on a novel, transformative technology. This differs from past manias centered on established companies (Nifty 50) or financial engineering (subprime mortgages), making it prone to similar flights of fancy.

Today's Market Is Characterized by 'Rolling Manias,' Not a Single Systemic Bubble | RiffOn