Z2961 – [ZS] BO Curve Scarcity (cross-wired)

The CBOT soybean oil (BO) futures curve is a direct read on soy-complex downstream demand. When demand for soybean oil (biodiesel blending, cooking oil, food) outruns supply, the near-term oil contract bids up relative to the 6-month-out contract, pushing the L6/L1 ratio below one. That backwardation state reflects a tightness that propagates back up the crush, packers and crushers bid for raw soybeans to meet oil demand. This signal reads BO 1st-nearby and 6th-nearby closes (CBOT first-nearby traded prices per Rule 35), computes the L6/L1 ratio, z-scores it on a 504-day rolling window with 126-day minimum sample, sign-flips the result (so backwardation = positive composite), and bounds with tanh. The honest grade: Grade B+. Daily Spearman IC against soybeans fwd60d is plus 0.087 at p-value 1.9e-16 across 8,984 trading days, strongly significant daily. Non-overlapping (every-60-day) IC is plus 0.088 at p-value 0.283 across 150 independent samples, same sign and reasonable magnitude but not statistically significant at the 0.05 bar. Phase stats show clean monotone pattern: Phase +1 (BO Backwardation Scarcity) delivers plus 2.95 percent fwd60d, plus 1.56 pp above the plus 1.38 percent baseline. Phase -1 (BO Contango Surplus) delivers plus 0.12 percent, minus 1.27 pp below baseline. 2.83 pp directional spread. Current reading: Moderate BO Contango at composite minus 0.403, 4 trading days running. The soybean oil curve has shifted into modest contango, reading soy-complex oversupply. Modest bearish-ZS lean. Mechanism note. This signal predicts SOYBEANS better than it predicts BO itself. The BO curve-structure signal reads overall soy-complex scarcity which propagates to soybeans more strongly than to oil (which has its own biofuel-demand drivers). Rebranded 2026-11-01 from BO target to CBOT Soybeans target per Priya 5-engine review.

What the chart is showing. The dark line in the top panel is the sign-flipped BO 6-month-to-1-month forward-curve ratio composite on a tanh-bounded plus-or-minus one scale — positive means backwardation (physical BO scarcity, bullish soybean complex via crush), negative means contango (surplus). The bronze line in the middle panel is the CBOT Soybeans front-month in cents per bushel. The bottom panel tracks the 252-day rolling information coefficient between the composite and soybeans 60-day forward returns. Dashed horizontal lines mark the plus-or-minus 0.2 moderate and plus-or-minus 0.5 extreme thresholds.

THE SCARCITY CALL

Composite -0.522, state Moderate NEG, 6 trading days running. Current direction and per-state baselines are in the regime table below.

THE EMPIRICAL CONTEXT

Phase stats show clean monotone pattern. Phase +1 (BO Backwardation Scarcity) +1.56 pp above baseline. Phase -1 (BO Contango Surplus) -1.27 pp below baseline. 2.83 pp directional spread.

THE HONEST CAVEAT

Daily IC strong at p<1e-16. Non-overlap rho marginal at p=0.283 - same sign but not statistically independent-significant. Grade B+ - use as auxiliary confirmation. Rebranded 2026-11-01 from BO target to ZS target per Priya 5-engine review (empirically stronger relationship).