Snapshot · …
Advance / Decline Ratio
The trailing 5-day and 10-day advance/decline ratio (total advancers ÷ total decliners over the window). Above 1.0 = more stocks rising than falling; below 1.0 = more falling. Extremes mark broad rallies and washouts.
Cumulative Breadth
Line Graph: the running sum of daily net advancers (advancers minus decliners) and the running sum of New 52-Week Highs minus New 52-Week Lows, each on its own scale, with SPX indexed so breadth-vs-price divergence stands out.
Bar Graph: Net Advancers per Session.
Daily History
Breadth is computed across US common stocks (leveraged/inverse ETFs, index funds and ADRs excluded). A stock is an advancer/decliner if it closed up/down versus the prior session.