What Is the Yield Curve?
The yield curve is a plot of interest rates across different bond maturities — from 3-month Treasury bills to 30-year bonds. In a normal environment, longer-dated bonds yield more than shorter-dated ones — investors demand a premium for locking up money for longer, and for bearing greater uncertainty about the future.
The most commonly watched version is the spread between the 10-year US Treasury yield and the 2-year Treasury yield (the "2s10s spread"). When this spread is positive, the curve is normal. When it turns negative — when 2-year yields exceed 10-year yields — the curve is said to be inverted.
Why Does the Yield Curve Invert?
The yield curve typically inverts when the Federal Reserve raises short-term interest rates aggressively to fight inflation, while long-term rates stay lower — because investors believe the rate hikes will ultimately slow the economy and bring rates back down. In other words, inversion reflects the market's belief that current monetary policy is tight enough to cause a slowdown.
This mechanism is also self-fulfilling. When short-term borrowing costs exceed long-term lending rates, banks' profit margins on new loans are compressed — reducing the incentive to lend. Tighter credit conditions slow investment and consumption, contributing to the recession the market was anticipating.
The Track Record
| Inversion Date | Recession Followed | Lag |
|---|---|---|
| 1978 | 1980 recession | ~18 months |
| 1980 | 1981–82 recession | ~12 months |
| 1988 | 1990–91 recession | ~18 months |
| 1998 | 2001 recession | ~30 months |
| 2006 | 2008–09 recession | ~24 months |
| 2019 | 2020 recession | ~8 months |
| 2022 | TBD | Ongoing |
What It Means for Equity Investors
The key insight from history is the lag. The yield curve typically inverts 12–24 months before the recession actually arrives — and equities often continue to rise for some time after the inversion. Selling all equities the moment the curve inverts has historically been premature.
The more useful signal is when the curve re-steepens — when short-term rates begin to fall back below long-term rates. This "uninversion" has historically been a stronger sell signal for equities than the initial inversion itself, because it often coincides with the Fed cutting rates in response to a deteriorating economy.
The Practical Investment Framework
- Yield curve inverts: Begin reducing cyclical exposure gradually. Favour quality and defensive sectors. Don't panic-sell.
- Yield curve deeply inverted (>50bps): Significant recession risk. Reduce cyclical overweight further.
- Yield curve begins to re-steepen: Highest risk period — recession may be imminent or already underway.
- Yield curve fully normalised (Fed cutting rates): Early cycle — begin rebuilding cyclical exposure at depressed valuations.
The Yield Curve and Oslo Børs Cyclicals
Norwegian cyclical stocks are particularly sensitive to global economic conditions. A US yield curve inversion typically signals weaker global trade — which directly impacts shipping volumes, energy demand, and commodity prices. Monitoring the yield curve is therefore directly relevant to Signycle's core sectors, not just to US equity investors.
The US Treasury publishes daily yield data at treasurydirect.gov. The 2s10s spread is tracked in real time on the St. Louis Fed's FRED database (search "T10Y2Y"). TradingView also has a live yield curve chart. Signycle will incorporate yield curve data as a macro signal in Phase 2.
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