Sung Sang-hyun | Macro BeyondOctober 23, 2026

Is the stock market plunge a warning of a financial crisis? The risk signal to watch first | Macro Beyond, episode 7

What to look for
Explore why strong growth can coexist with weak equities through interest rates and discounting. See how different contributions from production and prices lead the presenter to interpret nominal growth differently in the US and Korea.
Why it matters
When reading economic indicators, align the growth measurement period and yield maturity, then compare earnings expectations, rate direction and credit spreads. Examine samples and publication lags before turning historical regime averages into trading signals.

Timeline

7 segments
  1. The presenter divides past US periods by the growth–yield relationship and the direction of yields, reporting strong equity performance in some falling-yield periods even when growth was below yields. The main lesson is to avoid treating the sign of the gap as a standalone signal; historical regime averages do not guarantee future returns. The sample divisions, dividend treatment and observation timing have not been independently replicated, so falling yields should not be generalized as an unconditional positive.

An independent exercise, not a statement by the video creator or verification of every claim in the video.

Lower yields can coexist with lower value when expected cash flows fall

Compare a single hypothetical cash flow while holding other factors fixed. If an expected payment of 100 arrives in 1 year and the discount rate is 5%, its present value is 100/1.05=95.24. If a downturn reduces the expected payment to 90 while the discount rate falls to 4%, present value falls to 90/1.04=86.54. This illustrates why lower rates do not necessarily offset weaker earnings expectations. The video’s macroeconomic nominal growth rate should not be substituted directly for company cash-flow growth or an equity discount rate.

Check for yourself

  • Are yields falling because inflation is easing or because expected earnings are deteriorating?
  • Is growth measured year over year or at an annualized rate, and which yield maturity is being used?
  • Do the historical regime classifications use GDP revisions or trough information unavailable at the time?

Limits of application

This educational calculation uses a single cash flow and excludes actual long-term company growth, risk premiums, debt and dividends. It neither replicates the video’s regime returns nor forecasts markets.

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Educational information only; not investment advice.