Commodity subgroups labeled by crossover, support, or convergence

One worksheet for four commodity subgroups

A production-weighted commodity index is a benchmark that weights constituent commodity prices by recent world output so subgroup charts can be compared on a common production scale. That benchmark can be reviewed through commodity subgroups that separately cover precious metals, energies, agriculture, and livestock.

The weekly subgroup charts in the review used both a 50-day short simple moving average and a 200-day long simple moving average.

Precious metals as a support-test sequence

After a late-spring-2003 dip below its 200-day long simple moving average, the precious-metals subgroup advanced. From autumn 2003 the 50-day short simple moving average repeatedly acted as support even though price often slipped beneath it.

TradersWeek editorial label: that sequence is a moving-average support test, meaning a pullback that finds the short average underneath price after an advance, without requiring a new cross of the long average.

Energies and agriculture recorded a short-over-long cross

The energies subgroup's autumn-2003 rise followed a sideways spring-2003 correction after a February 2003 collapse, and in December the 50-day short simple moving average crossed above the 200-day long simple moving average.

The agriculture subgroup left a 10-month correction in summer 2003, reached multiyear highs by the first month of 2004, and showed a 50-day average crossing above the 200-day average in autumn 2003, aside from a brief December 2003 pullback.

TradersWeek editorial label: both sheets record a moving-average crossover, a condition in which the short average crosses the long average, treated as a distinct, checkable signal rather than as a synonym for any rally.

Livestock as convergence without a confirmed breakout

Livestock exited a sideways range that had run from November 2002 into early autumn 2003 after the 50-day and 200-day averages converged in August 2003 without a 50-over-200 cross, then corrected sharply by December 2003 and remained below the 200-day long simple moving average.

The livestock sequence is recorded as a case where average convergence and a later price surge did not constitute a confirmed moving-average-crossover breakout. Average convergence without a cross is a tightening of the short and long averages that stops short of a crossover and therefore does not confirm a breakout hypothesis. Breakout confirmation is a repeatable chart event, such as a short-average cross above a long average or a close above a defined range, used to accept or reject a directional trade hypothesis.