Market regime: when the answer is nobody

After this lesson you can read the market's own health from three gauges, and you'll know when the correct position in everything is smaller or nothing.

The tide check

Course 4 established that a large share of any stock's move belongs to the market and the group. This course is about the biggest of those layers, the market itself, and the habit of checking the tide before swimming.

Regime is the word for the market's prevailing condition. Roughly: is the index in a healthy Stage 2, or in something else? The point of naming it is behavioural. In a hostile regime most breakouts fail, and the same trader running the same method loses more often than usual, while the companies involved carry on doing what they were doing all year. A regime reading puts a measurement on that, so the response can be an exposure adjustment rather than a month spent wondering what went wrong with you.

Three gauges, in increasing order of subtlety:

The index against its long averages. The bluntest of the three and the most robust: is the index above or below its 200-day (or its 50-day, for the intermediate view), and which way is the average sloping? This is Weinstein's stage framework applied to the index itself. It's crude and often late, and it would still have kept a trader out of the deep middle of every major bear market of the past century.

Breadth. What fraction of stocks are above their own 200-day? An index at highs while fewer and fewer members participate (School I's cap-weighting hiding a handful of giants doing all the work) is an advance thinning out, or in the old Wall Street phrase, the army retreating while the generals advance. Narrowing breadth is an early caution that the average stock's regime is worse than the index admits.

Distribution days. O'Neil's gauge: days the index falls on volume heavier than the prior day's. A single one means nothing much. A cluster, several within a few weeks while the rallies between them come on light volume, is institutional selling showing up at index scale. It's School III's distribution reading applied to the whole market. O'Neil's observation across a century of tops was that they tend to announce themselves this way while the price highs are still fresh.

Acting on it

The regime reading maps to exposure, and School VI formalizes the ladder. The short version: a healthy regime earns full normal operation. A deteriorating one, with the index below a flattening average and breadth narrowing while distribution clusters, earns fewer positions at smaller size and a higher bar for every entry. A confirmed hostile regime earns the position beginners find hardest, which is none at all. Sitting in cash, keeping the focus list current while risking nothing, is itself a position, and it's the freedom the professionals don't have (School I, course 3). School II's arithmetic quietly favors it too, since the road back from a drawdown you avoided is zero percent.

Regime reading is a description of present conditions, taken with known gauges, and exposure follows the description. When the conditions change, the same gauges say so.

Check yourself

The index sits at all-time highs; 38% of its members are above their 200-day averages. Read it. (Thin advance — a few giants carrying a retreating army. The average stock's regime is worse than the headline, so get cautious before the index itself shows it.)
Why does a cluster of distribution days matter when a single one doesn't? (One heavy down day is noise. A cluster with feeble rallies between is sustained institutional selling, spread over weeks because that's the only way size can leave.)
Your setups keep failing at twice the usual rate this month. What question does this course insist on before self-blame? (What's the regime? The same method loses more often in a hostile tide, and the thing to adjust may be exposure rather than the method.)

The idea this lesson installs

Trade the stock you like only in the market that allows it.

Next: Course 6 — "Screening for strength: building the focus list."