Credit-Equity Divergence Strategy

The thesis

Credit and equity are both claims on the same corporate cash flows, but the buyers behave differently. Credit investors are typically more risk-averse, more institutional, and more sensitive to default probability. When the macro picture deteriorates, credit usually starts pricing the risk first — high-yield spreads widen, the HYG/LQD ratio rolls over — before equities react. The reverse is also true: when credit conditions improve, credit leads the recovery before equities follow.

Empirical basis

Multiple studies document that credit spreads (especially high-yield) are a leading indicator for equity returns at horizons of 1-3 months. The HYG/LQD ratio (high-yield / investment-grade), the OAS spread on the Bloomberg Barclays High Yield index, and the term premium captured by long-duration Treasuries (TLT) all encode different aspects of macro risk repricing that show up in equities with a lag. Gilchrist and Zakrajsek (2012) demonstrated that excess bond premium — the residual after controlling for default probability — predicts future equity returns and macro variables.

How Alpha Suite implements it

• HYG / LQD ratio — the relative price of high-yield to investment-grade ETFs; declines indicate widening credit spreads.
• HYG / TLT ratio — high-yield credit relative to long-duration Treasuries; declines indicate a flight from risk to safety.
• Z-scored divergences — when the credit ratio moves more than X standard deviations relative to SPY over a rolling window, the divergence is flagged.
• Direction-aware signals — long divergence (credit weak, equities strong) is a bearish setup; short divergence (credit strong, equities weak) is a bullish setup. Position sign is set by which series leads.
• Time-stop — divergences usually resolve within 1–3 months; the time-stop is set accordingly.

When it fires

Credit-equity divergence signals are most meaningful around macro inflection points: late-cycle stress, post-Fed-decision repricings, or risk-on / risk-off regime shifts. They are less useful in stable, trending markets where credit and equity move together. The strategy interacts directly with the macro regime filter — in defensive regimes, divergence signals carry more weight.