Minsky's stages of a boom and a crash: from calm to panic

What are Minsky’s stages of a boom and a crash?

Minsky described a loop with 3 phases of debt accumulation and a turn. After a crisis, the hedge phase begins and lending stays small. Renewed confidence opens the speculative phase. Rising prices then lead to the Ponzi phase, where borrowers need higher asset values to refinance. When prices stop rising, the loop breaks, and a panic for cash follows.

Forecasting a date from the loop does not work, since each phase can last for years. The loop gives something else: a map. Placing a market on the map tells you which question matters most at that point. This page follows the map from calm to panic and back, using a small worked example with round numbers.

What happens in the hedge stage after a stock market crash?

After a crisis, caution rules. Lenders ask for strong cash flow, borrowers hold little debt, and loans stay small. Take a firm that owes 1,000 at 5% interest, so interest costs 50 a year, and that repays 200 of principal a year. Its debt service is 250. With cash flow of 300, it pays everything from income. This is a hedge position, and it can absorb a fall.

The hedge stage looks dull, and that is its value. Prices recover slowly, defaults fall, and trust returns. The economy tends toward equilibrium, and models built on equilibrium work well here. The seeds of the next stage grow from this success: low losses invite lenders to ask less of borrowers, and a calm that lasts starts to feel permanent.

How does complacency start the speculative stage of a boom?

Renewed confidence brings complacency, and the speculative stage starts. Lenders issue loans that cover interest only, with the principal to be refinanced later. Our firm now earns cash flow of 80, enough for the interest of 50 and short of the principal. It pays what is due and rolls over the rest. As long as lenders keep rolling loans over, nothing looks wrong.

Speculative finance depends on an open refinancing market. A firm in this position is healthy on paper and exposed to any change in lender mood. Typical signs include more interest-only structures, looser covenants, and growing reliance on short-term funding. Each sign is small, and together they mean that a share of the market now needs a lender to say yes every year.

What marks the Ponzi stage before a stock market crash?

In the Ponzi stage, banks and borrowers expect asset prices to keep rising. Cash flow falls below even the interest bill: our firm earns 30 against interest of 50. It stays afloat by borrowing against assets whose price is rising. The rise pays the gap, so the plan works only while prices climb, and every new loan raises the level of debt that a fall would test.

Widespread Ponzi finance makes the whole system depend on a belief. Borrowers cannot pay principal or interest from cash flow, and lenders accept the risk because collateral keeps gaining value. Foreclosures and debt failures follow once prices stall. In a stock market crash, the equivalent signs are margin debt, loans against shares, and funds that must sell to meet redemptions.

What happens when asset prices stop rising at the end of a boom?

The turn comes when asset prices stop rising. Speculative borrowers cannot roll over their debt, because lenders now ask for repayment or more collateral. Hedge borrowers can be pulled down too, like dominoes, since their customers, suppliers, and funders sit among the borrowers who fail. The turn can follow a modest event. What matters is how many borrowers need rising prices to stay solvent.

Panic is the last stage of the boom: borrowers sell what they can sell, not what they would like to sell. The result is a sharp drop in liquidity and a scramble for cash. A stock market crash is the visible face of this scramble, and the Minsky moment names the instant when the growth phase ends.

How does a crash end and the next Minsky cycle begin?

After the scramble, participants deleverage. Debts shrink, losses are written down, and caution returns. Stability returns too, and the hedge stage opens a new loop. The sequence repeats: stability encourages risk-taking, risk-taking turns into instability when risks become losses, deleveraging follows, and stability comes back.

Paul McCulley called the downturn after August 2007 a reverse Minsky journey, a trip back through the same stages in the opposite order. He dated the Minsky moment of the 2008 financial crisis to August 2007, while others place the start in June 2007, with the failure of two Bear Stearns funds. The loop runs in both directions.

How can you place a market on Minsky’s stages today?

Place a market on the map with 4 tests. Hedge: lending is small and defaults are falling. Speculative: interest-only loans and refinancing are common. Ponzi: borrowers rely on rising prices to pay interest. Turn: refinancing closes and forced sales begin. Record the stage each quarter and watch the direction. This page is general information, not investment advice.

A score built on public data makes the placement repeatable. The EQOS Asia method page explains the approach, the Λ simulator applies it to a case you bring, and the pricing page lists the diagnostic options for teams in Singapore, ASEAN, and Hong Kong.

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About the author

Stéphane Jambu

President, EQOS Forecast Asia

Stéphane Jambu leads EQOS Forecast Asia and works as a consultant in e-commerce, search visibility, and AI. LinkedIn profile