What the stock market bubble can tell us about the state of the US economy

Marxist Analysis · 2026-05-13

Core Argument¶

The article argues that the current US stock market boom is not a sign of genuine economic health but a symptom of deep-seated capitalist stagnation. The central thesis is that soaring stock valuations — driven almost entirely by AI speculation — are completely detached from the real economy's capacity to generate commensurate future profits. The stock market is booming precisely because there is no profitable outlet for investment in productive activity. Capital is piling up as cash hoards, funding share buybacks and speculative deals, while the underlying productive base stagnates. The bubble therefore signals not the approach of a new boom but the exhaustion of all the mechanisms — credit expansion, state debt, working-class exploitation — that have propped up the system since 2008.

Theoretical Grounding¶

The analysis is grounded in Marx's theory of crisis, specifically the distinction between the tendency of the rate of profit to fall and the countervailing factors outlined in Capital Volume 3. The article directly challenges mechanical interpretations that reduce crisis to a falling rate of profit, noting that profit rates by certain measures are at post-war highs. Instead, it foregrounds the problem of realisation — the inability to sell commodities because the market is not expanding — as the binding constraint on accumulation.

The key theoretical move is to show how the countervailing factors (cheapening of capital through globalisation, increased rate of exploitation) have temporarily boosted profits while simultaneously destroying the conditions for expanded reproduction. Workers are more exploited, so they cannot consume; capitalists do not invest because capacity utilisation is low; the state and consumer credit fill the gap until they too hit limits. This is a crisis of overaccumulation expressed through fictitious capital — stock market valuations that represent claims on future profits that cannot materialise because the productive base is not expanding.

The article also draws on Marx's concept of the reserve army of labour (specifically in relation to Black workers) and the parasitic character of the modern bourgeoisie, which no longer fulfils its historical role of developing the productive forces.

Conjunctural Relevance¶

The article is written in October 2025 and is acutely conjunctural. It identifies:

The AI-driven stock rally: 80% of the 2025 stock market rise is concentrated in AI-related stocks. Nvidia (P/E of 60), Palantir (700), ARM (250), and Tesla (240) are cited as extreme examples of valuation detached from reality.
Capacity utilisation at 77%, far below the late-1960s peak of 87%, indicating chronic overcapacity.
US manufacturing output down 7% since 2007.
Labour productivity in manufacturing peaked in 2013.
Fixed investment stagnant at around 14-15% of GDP since 2008.
Household debt as a share of GDP fell from 98% (2008) to 68%, but federal government debt rose from 65% to 105% of GDP, with a 27% budget deficit.
Consumer sentiment worse than at the height of the 2009 Great Recession.
Protectionist measures: US and EU tariffs on Chinese EVs, steel tariffs, the Huawei ban — all symptoms of intensified competition for shrinking markets.
Nvidia's circular deals: funding the purchase of its own chips to create artificial demand.

The article situates these phenomena within the broader context of the organic crisis of capitalism — a system that has exhausted all its crisis-management tools (zero interest rates, quantitative easing, massive state borrowing) and now faces a downturn with governments already heavily indebted and central banks hamstrung by persistent inflation.

Where the Argument Continues¶

The article leaves several threads open that are developed elsewhere in the IDOM corpus:

The falling rate of profit debate: The article explicitly challenges mechanical applications of the law, but does not fully develop its own position on the relationship between the tendency and countervailing factors. This is taken up in other IDOM articles on Marx's law of the tendency of the rate of profit to fall.
The role of China: The article mentions Chinese steel overcapacity and the blocking of Nvidia chips from the Chinese market, but does not analyse the Chinese economy's own crisis tendencies or the geopolitical dimension of US-China rivalry. These are developed in IDOM articles on the global economy and geopolitical tensions.
The political response: The article notes that trade union leaders and political parties have sold workers the lie that austerity will lead to recovery, but does not elaborate on the strategic implications for the workers' movement. This connects to broader RCI analyses of reformism and the need for a revolutionary party.
The specific dynamics of AI: The article treats AI as a speculative bubble, but does not explore whether AI represents a genuine (if limited) development of the productive forces or is entirely fictitious. This is a live debate within Marxism that IDOM has addressed elsewhere.

Connections¶

Marx, Capital Volume 3: The chapters on the tendency of the rate of profit to fall and the countervailing factors are the theoretical backbone.
Marx, Capital Volume 2: The problem of realisation and the circuits of capital are implicit throughout.
Hilferding, Finance Capital: The analysis of fictitious capital and the separation of finance from production.
IDOM articles on the 2008 crisis: The article builds on earlier analyses of the Great Recession and the limits of quantitative easing.
IDOM articles on inflation and the cost-of-living crisis: The article's treatment of the Fed's dilemma (inflation vs. recession) connects to ongoing coverage of the post-pandemic inflationary period.
Against the Stream episodes on the US economy: The podcast series develops the conjunctural analysis in more detail, particularly around tariff policy and geopolitical tensions.

Key Quotes¶

"The rally in the stock market is based on AI, and pretty much only AI. It is the big tech companies that are leading the way. Stocks related to AI account for 80 percent of the rally this year."
"If one attempts to approach the economy purely from the point of view of formulas, one can easily miss the obvious: there is no reason to invest if your factories are not running at even close to full capacity."
"What we have here is thus a problem of the market that the companies are selling into, not a question of the profitability of the products they do sell."
"The US government has become the 'consumer of last resort', not just of the US but, incidentally, also of the world."
"Why is the stock market booming then? Ironically, it is precisely because there is no money to be earned in investing in productive activities."
"All the tools they used to get us this far have been used up: governments have borrowed unprecedented amounts, central banks have cut interest rates and printed money. Nothing has solved the problem, and now we're facing another downturn where governments are already heavily indebted, and central banks are hamstrung by inflation that won't come down."