Job 15 (Curated Large-Cap Study)

The authoritative Pattern Analysis study: SD clustering measured over a curated list of about 50 large, liquid US-listed stocks.

Job 15 is the primary technical clustering study behind the headline Pattern Analysis signal. It measures standard deviation (SD) clustering across a curated universe of approximately 50 highly liquid, large-cap US equities. By focusing exclusively on these market-leading stocks, the study provides a concentrated look at the core of the US equity market, filtering out the noise of smaller, more volatile, or niche assets. The study operates by comparing current market breadth statistics against frozen historical baselines, which include the historical means and standard deviations calibrated specifically for this 50-stock universe. When a significant number of these stocks experience simultaneous, extreme price moves (clustering), the study registers a signal. This helps investors determine whether the broad US stock market is undergoing a coordinated regime shift or if price action is merely isolated to a few names. Investors monitor Job 15 to gauge the strength and health of market-wide trends. High readings, such as a "1 SD UP" signal, historically indicate strong upward coordination and have statistically preceded positive short-term market returns. Conversely, a lack of clustering suggests fragmented market participation. Because Job 15 is equity-only, investors often pair its findings with broader cross-asset studies to confirm whether a trend is truly systemic or limited to large-cap stocks.

If the historical baseline mean for a specific breadth metric in the 50-stock universe is 10% with a standard deviation of 2%, and the current live reading of that metric rises to 14%, the study calculates the deviation as: (14% - 10%) / 2% = 2.0. This triggers a '2 SD UP' signal, indicating a highly coordinated bullish clustering event across the large-cap universe.