Immediate definition
In plain words — Once a week, Hurst rapidly reviewed thousands of charts, retained only readable candidates, and reserved deep analysis for a 12–20-stock list called the stable.
In 1970 the process was manual: weekly chart books delivered by mail, clippings, folders, and pencil updates. The logistics are obsolete, but the separation between candidate generation and complete analysis remains an understandable way to organise research.
The book's total scan
Hurst limits the universe to the two major US exchanges, then more than 2,000 stocks. Each chart receives two quick questions: is dominant cyclicality visually clear? Does the background movement appear to have just rounded a low for a long candidate, or a high for a short? Only charts passing both checks receive closer inspection.
The book then requires average volume of at least 10,000 shares a week and proximity to an edge- or mid-band signal. The weekend review took a little more than half a day and usually yielded 80–140 names. Those figures describe his market and tools; they are not thresholds for every modern market.
Historical alternatives
When the first list was weak, Hurst suggested two alternative scans. One searched for developing triangles. The other used charts spanning up to nine years: a long decline, no more than one year of recovery, price still well below old highs, and a break from a 9–24-month horizontal range. These were different ways to seek the same requirement: a structure interpretable within the model.
What the “stable” means
The stable is not an automatic portfolio. It is a limited research queue. Its 12–20 names receive current charts, complete analysis, and predefined action conditions. Hurst says a well-maintained stable may produce four or five signals a day and reduce idle time between trades. That is his historical claim, not a promise or a compulsory target.
A short list limits scattered attention, but it also creates selection risk. If criteria change without a record, successful names look inevitable while rejected names disappear from memory.
A responsible modern translation
A screener can apply criteria in seconds, but speed does not solve data quality or causality. Historical universe membership must be retained, information published after the scan must be excluded, and spreads, depth, and capacity should complement volume. Above all, Hurst's preference for small, mobile stocks needs context: the SEC notes that microcaps may combine limited public information, low liquidity, high volatility, and greater manipulation risk.
To evaluate the process, record the scan date, rules, candidates, exclusions, and subsequent decisions. The stable then becomes auditable rather than a list reconstructed after the winners are known.
The source-checked label concerns correspondence with Chapter 7; it does not
certify a contemporary edge from total scanning.
Sources
- J. M. Hurst, The Profit Magic of Stock Transaction Timing, Prentice-Hall, 1970, ch. 7, pp. 115–121 — total scanning, alternatives, and the stable.
- SEC Office of Investor Education and Advocacy, Microcap Stock Basics: Risk, 2016 — information, liquidity, volatility, and manipulation risks in microcaps.
Related entries
- Selection and tracking — the complete process.
- Volatility and stability screening — the second filter.
- Price tracking — monitoring the stable.