GlossaryBy Sverre MoeUpdated 2026-07-21
What is UDVR (Up/Down Volume Ratio)?
What is UDVR (Up/Down Volume Ratio)?
UDVR is total volume traded in advancing stocks divided by total volume traded in declining stocks, across the eligible universe, for a single session. Above 1.0 means buyers moved more volume than sellers that day; below 1.0 means the reverse. It is a same-day conviction read: where McClellan smooths advance/decline data over weeks, UDVR reports the volume-weighted balance of power for today alone, with no smoothing at all.
It is the same underlying signal the site labels "Up vs down volume" when discussing the Breadth subscore and "UDVR" on the volume page, one signal with two names depending on context. Inside Breadth it carries a 5% weight, added specifically to capture same-day conviction that McClellan's multi-week smoothing partly obscures.
How tickerstance reads UDVR
UDVR appears on /volume as part of the day's volume-regime read, paired with the day's overall participation label (Accumulation, Distribution, Churning, or Stalling) and the eligible universe's total volume relative to its 30-day average.
As of the July 20, 2026 close, UDVR read 0.88x, described on the dashboard as "down-skewed": more volume traded in declining names than advancing ones. That session's overall volume regime was labeled Stalling, light participation at 73% of the 30-day average, with no directional conviction either way despite the down-skew in UDVR specifically.
Related
- RVOL
A per-name relative-volume read, distinct from UDVR's universe-wide ratio.
- Breadth
The subscore UDVR feeds at a 5% weight.
- Reading Volume
How TickerStance classifies a session into Accumulation, Distribution, Churning, or Stalling.