What Is Market Regime Duration?
A market regime is a classified phase of internal market health — not a headline about whether stocks went up or down today. Breadth Signal assigns regimes from participation data: Bull Expansion, Bull Consolidation, Bear Liquidation, Bear Basing, and Calibrating. Regime duration is simply how long the market has stayed in the current phase without shifting.
Why Duration Matters to Quantitative Traders
Regimes do not last forever. A Bear Liquidation phase that has persisted for 42 sessions when the 20-year maximum for that regime is 45 sessions is objectively closer to a duration extreme than one that has lasted 8 sessions. This tracker displays that ratio as a progress bar and a structural exhaustion percentage — data first, narrative second.
- Green bar — current regime is Bull Expansion.
- Red bar — current regime is Bear Liquidation.
- Grey bar — consolidation, basing, or calibrating phases.
The Recent Regime Sequence Strip
Below the progress bar, coloured blocks show recent regime segments in chronological order. Wider blocks lasted longer. The outlined block is the active regime today. Hover a block to see exact start date, end date, and session count.
QQQ vs SPY Regime Duration
QQQ (Nasdaq-100) is more concentrated in technology leaders; regime shifts can occur faster than in SPY (S&P 500), which reflects a broader 500-stock cross-section of the U.S. economy. Toggle between indices to compare duration context.
Daily vs Weekly Duration
Daily counts trading sessions — best for tactical context. Weekly counts week-ending bars — best when you want to filter daily noise and focus on structural multi-month persistence.
How This Pairs With the Distortion Chart
Duration tells you how long a regime has lasted. The market breadth history chart tells you how distorted participation is between mega-caps and the average stock. Together they form a stereoscopic view of market structure.
- Is a high exhaustion percentage a buy or sell signal?
- No. It is a duration measurement only. Breadth Signal does not issue directional calls. High exhaustion means the current episode is approaching historical length limits for that regime type.
- How often is regime duration updated?
- After each production data run in our lab pipeline — typically aligned with the latest verified trading session.
- Where do the regime labels come from?
- From breadth participation metrics on equal-weight index constituents, using the same phase classification as the Breadth Signal daily and weekly dashboards.
- Is this investment advice?
- No. Educational research only. See our Terms of Service.