COT Wheat — Killed April 2026

Hypothesis: CBOT wheat commercial hedger extreme positioning (legacy-extended 1986–2024) is a contrarian signal. Extreme commercial short = buy; extreme commercial long = sell.

Battery result: 0 of 4 tests passed. Directional z-score: −0.29.

Test 1 — Monte Carlo null: A z-score of −0.29 means the signal had a slightly negative directional tendency — marginally more likely to produce a loss than a gain. This is not a rounding error; it is the full-dataset estimate over 35+ years. The signal failed to exceed null performance in either direction.

Test 2 — Blind era-split replication: No replication across eras. Results are inconsistent between the pre-2000 and post-2000 sub-samples, precluding a structural interpretation.

Test 3 — Specificity vs negative controls: No discriminative advantage over random entry into wheat futures.

Test 4 — Mechanism sensitivity: The commercial hedger over-hedging mechanism is not confirmed. Wheat commercials include large integrated grain traders who hedge symmetrically; the premise of systematic sentiment extremes does not hold.

Failure mode: PURE NOISE. The z-score of −0.29 is directionally wrong as well as statistically null. If anything, the historical data shows a very slight tendency for extreme commercial shorts to precede further weakness — the opposite of the hypothesis.

What survives: Nothing from this kill affects the Keeling CO2 amplitude signal or any Observatory supply-chain chain. The wheat price level is an input to the 2029–2031 food-systems chain, but through a different mechanism (structural supply constraints, not COT positioning).