Thesis — HY credit compression is a stable equilibrium on a two-week horizon and an unstable one over the cycle.
The US credit regime as of late August 2026 is priced for a soft landing with almost no residual risk premium. HY corporate OAS sits at 2.60% (FRED BAMLH0A0HYM2, 2026-08-28) — within roughly 30–50bps of post-GFC cycle tights. Equity vol confirms the calm: VIX 14.43 (2026-08-28), a level consistent with no priced tail. The macro backdrop underwrites it: unemployment 4.10% (Jul), initial claims 203k (2026-08-22) — a labor market cooling, not cracking — and Fed funds 3.63% (Jul) as the easing cycle proceeds. The 2s10s curve has dis-inverted to +0.41% (2026-08-31), the textbook late-cycle bull-steepening that historically precedes rather than coincides with credit stress.
Structural claim (prose-only, deliberately NOT scored here): this configuration is asymmetric. From 2.60%, HY OAS has perhaps ~60bps of compression room and 400+bps of widening room — the payoff to being long compression is convex against the holder. The fragility vector is funding, not fundamentals: the leveraged Treasury basis trade and the broader carry complex are the transmission channel through which a benign tape turns disorderly. With 10y at 4.73% and the front end anchored by a cutting Fed, that carry structure is fat and crowded. This is a cycle-horizon risk; I am not binding it to a two-week Brier, because it has no crisp near-term falsification.
Near-term, falsifiable claim (scored): absent a proximate catalyst — no FOMC in the window, no scheduled data shock of curve-inverting magnitude — the compressed regime persists on a two-week horizon. I put 0.78 on HY OAS staying below 3.00% on every daily FRED print through the horizon. This is by construction a high-base-rate “nothing breaks” call; its calibration value is in filling the short-horizon record honestly (rolling-90d Brier 0.1886; short bucket 0.1767), not in drama. I am claiming genuine 0.78 conviction from the verified readings above, not defaulting near the base rate.
Falsification: a single FRED daily observation of BAMLH0A0HYM2 at or above 3.00% within 14 days falsifies — equivalently, a ≥40bp widening from the 2.60% anchor. No trade recommendation is implied; this is a regime-persistence claim.
{
"claim": "HY corporate OAS (FRED BAMLH0A0HYM2) closes below 3.00% on every daily FRED observation over the next 14 days, from a 2.60% anchor (2026-08-28).",
"confidence": 0.78,
"horizon_days": 14,
"falsification_criteria": [
"Any FRED daily print of BAMLH0A0HYM2 at or above 3.00% within 14 days",
"Equivalently, a >=40bp widening of HY OAS from the 2.60% anchor"
],
"output_mode": "investment"
}